Beginner: Three Reservoir ProblemPágina 1 de 11 Beginner: Three Reservoir Problem (SI Units) Beginner: Three Reservoir Problem (English Units) Summary This example is designed to give you the big picture of AFT Fathom's layout and structure. Some of the more basic concepts will be used to build a three-pipe, four-junction model to solve the classic three-reservoir problem. Topics Covered · · · Drawing the system with Pipes and Junctions Entering Pipe and Junction Specifications Specifying System properties and Solution Control Required Knowledge This example assumes the user has not used AFT Fathom previously. It begins with the most basic elements of laying out the pipes and junctions and solving a hydraulic methodology. Model File Walkthru Three Reservoir.fth Step 1. Start AFT Fathom To start AFT Fathom , click Start on the Windows taskbar, choose Programs, then AFT Products, then AFT Fathom. (This refers to the standard menu items created by setup. You may have chosen to specify a different menu item during installation) When you start AFT Fathom, the Workspace window is always the active (large) window. The Workspace window is one of five primary windows. After AFT Fathom loads, you will notice four windows in the lower part of the AFT Fathom window; these represent four of the five primary windows that are currently minimized (see Figure 1). The AFT Fathom window acts as a container for the five primary windows. To ensure that your results are the same as those presented in this documentation, this example should be run using all default AFT Fathom settings, unless you are specifically instructed to do otherwise. The Workspace window The Workspace window is the primary vehicle for building your model. This window has two main areas: the Toolbox and the Workspace itself. The Toolbox is the bundle of tools on the far left. The Workspace takes up the rest of the window. See Chapter 4 for more detailed information on the Workspace. You will build your pipe flow model on the Workspace using the Toolbox tools. At the top of the Toolbox are a Shortcut button and four drawing tools. The Selection Drawing tool, on the upper left below the Shortcut button, is useful for selecting groups of objects on the Workspace for editing or moving. The Pipe Drawing tool, on the upper right below the Shortcut button, is used to draw new pipes on the Workspace. Below these two tools are the Zoom Select tool and the Annotation tool. The Zoom Select tool allows you to draw a box on the Workspace after which AFT Fathom will zoom into that area. The Annotation tool allows you to create annotations and auxiliary graphics. Below the four drawing tools are twenty-two icons that represent the different types of junctions available in AFT Fathom. Junctions are components that connect pipes and also influence the pressure or flow behavior of the pipe system. The twenty-two junction icons can be dragged from the Toolbox and dropped onto the Workspace. When you pass your mouse pointer over any of the Toolbox tools, a ToolTip identifies the tool's function. Figure 1: The Workspace window is where the model is built. Step 2. Lay out the model To lay out the classic three-reservoir model, you will place the three reservoir junctions and a branch junction on the Workspace. Then you will connect the junctions with pipes. A. Place the first reservoir To start, drag a reservoir junction from the Toolbox and drop it on the Workspace. Figure 2a shows the Workspace with one reservoir. Objects and ID numbers Items placed on the Workspace are called objects. All objects are derived directly or indirectly from the Toolbox. AFT Fathom uses three types of objects: pipes, junctions and annotations. All pipe and junction objects on the Workspace have an associated ID number. For junctions, this number is, by default, placed directly above the junction and prefixed with the letter "J". Pipe ID numbers are prefixed with the letter "P". You can optionally choose to display either or both the ID number and the name of a pipe or junction. You also can drag the ID number/name text to a different location to improve visibility. The reservoir you have created on the Workspace will take on the default ID number of 1. You can change this to any desired number greater than zero and up to 30,000. Editing on the Workspace Once on the Workspace, junction objects can be moved to new locations and edited with the features on the Edit menu. Cutting, copying, and pasting are all supported. A single mk:@MSITStore:C:\AFT%20Products\AFT%20Fathom%207.0\Examples\FathomEx... 16/03/2013 Cutting. 16/03/2013 . mk:@MSITStore:C:\AFT%20Products\AFT%20Fathom%207.Beginner: Three Reservoir Problem Página 2 de 11 Once on the Workspace. B. click on the undo button on the Toolbar or choose Undo from the Edit menu. Figure 2a: Walk Through Model with one reservoir placed. Arrange the three junctions. To undo an operation. choose Redo from the Edit menu. select one of the two reservoirs on the Workspace and once again choose Duplicate from the Edit menu. numbered J1. To create a second reservoir from the existing one. you can Undo the Duplicate operation and then Redo it to see how these editing features work. and pasting are all supported. as shown in Figure 2c. copying. Choose Duplicate from the Edit menu and move the J2 junction to the right of J1. J2. and J3. A single level of undo is available for all editing operations. To redo an operation. If you like.0\Examples\FathomEx. A red outline will surround the junction.. select junction J1 by clicking it with the mouse. Your Workspace should appear similar to that shown in Figure 2b. To create the third junction. Figure 2b: Walk Through Model with two reservoirs placed. junction objects can be moved to new locations and edited with the features on the Edit menu.. Place the second and third reservoirs The remaining two reservoirs can be created the same way as the first one or they can be derived from the existing reservoir. select a Branch from the Toolbox and place it on the Workspace as shown in Figure 2d. The pointer will change to a crosshair when you move it over the Workspace. but have no bearing on the actual length or elevation relationships. Choose Save As… from the File menu and enter a file name (WalkThru. Note: The relative location of objects in AFT Fathom is not important. C. Next. you need to connect them with pipes. 16/03/2013 . Distances and heights are defined through dialog boxes. drag it so that its left endpoint falls within the J1 Reservoir icon. mk:@MSITStore:C:\AFT%20Products\AFT%20Fathom%207. To create a pipe. The pipe object on the Workspace has an ID number (P1) shown near the center of the pipe. To place the pipe between J1 and J4. Draw a pipe above the junctions. Draw a pipe between J1 and J4 Now that you have four junctions. D. The Branch will be assigned the default number "J4".. similar to that shown in Figure 2e. then drop it there (see Figure 2f). perhaps) and AFT Fathom will append the ".0\Examples\FathomEx. click the Pipe Drawing tool icon.. grab the right endpoint of the pipe and stretch the pipe.Beginner: Three Reservoir Problem Página 3 de 11 Figure 2c: Walk Through Model with three reservoirs placed. save the work you have done so far. use the mouse to grab the pipe in the center. Figure 2e: Walk Through Model with first pipe drawn. The relative locations on the Workspace establish the connectivity of the objects.fth" extension to the file name. dragging it until the endpoint terminates within the J4 Branch icon (see Figure 2g). Add a branch junction To add a Branch junction. Figure 2d: Walk Through Model with all junctions placed. Before continuing. E. Activate the pipe drawing tool again. In general. the reference positive flow direction indicates which direction is considered positive. the output will show the flow rate as a negative number. At this point all the objects in the model are graphically connected. Alternatively. Reference positive flow direction Located on the pipe is an arrow that indicates the reference positive flow direction for the pipe. Note: It is generally desirable to lock your objects to the Workspace once they have been placed. Add the remaining pipes A faster way to add a pipe is to draw it directly between the desired junctions. Figure 2g: Walk Through Model with first pipe connected. In Figure 2h the junction icons for J2 and J3 have been rotated (using tools on the Arrange Menu) and the J3 label has been moved slightly to the left (using drag-and-drop) so it is more visible. You can reverse the reference positive flow direction by choosing Reverse Direction from the Arrange menu or selecting the reverse direction button on the Toolbar. Press and hold the left mouse button.. when used with pumps and certain other junction types the pipes must be in the correct flow direction because that is how AFT Fathom determines which side is suction and which is discharge. and will remain so as long as any selected object is locked.0\Examples\FathomEx. mk:@MSITStore:C:\AFT%20Products\AFT%20Fathom%207.. You can lock all the objects by choosing Select All from the Edit menu. then selecting Lock Object from the Arrange menu. Then draw a third pipe from the J3 Branch to the J4 Reservoir. Position the cursor on the J4 Branch. 16/03/2013 . Your model should now look similar to Figure 2h. If the reference positive direction is the opposite of that obtained by the Solver. you can use the grid feature enabled on the Workspace Preferences window and specify that the pipes and junctions snap to grid. This prevents accidental movement and disruption of the connections. However. AFT Fathom assigns a flow direction corresponding to the direction in which the pipe is drawn. Save the model by selecting Save from the File menu or Toolbar. The lock button on the Toolbar will appear depressed indicating it is in an enabled state.Beginner: Three Reservoir Problem Página 4 de 11 Figure 2f: Walk Through Model with first pipe inlet end connected. Stretch the pipe to the J2 Reservoir then release the mouse button. AFT Fathom will display a temperature range applicable to liquid or gas. the values for density and viscosity are default fluid properties. which can be used in AFT Fathom if incompressible. It also supports steam data. Note: As heat transfer has a significant impact on compressible flow fluid properties and. Data from ASME Steam tables – This fluid model obtains water data from the ASME Steam tables built into AFT Fathom. Close the checklist and select Output Control from the Analysis menu. you can make adjustments by opening the Solution Control window from the Analysis menu. This opens the Checklist window (see Figure 3). This model supports heat transfer analysis if specific heat and thermal conductivity data is included. dynamic viscosity. enter a new title (if you like you can title this "Classic Three-Reservoir Problem"). then click OK to accept the title and other default data. Upon entering a pressure. After selecting either Chempak option above. 1. although some are temperature dependent only. To do this. You cannot perform heat transfer analysis with an unspecified fluid. This fluid model supports heat transfer analysis. viscosity model. Chempak Fluid – This fluid model allows you to select a single fluid from the Chempak database list. A. you must then select Liquid Properties or Gas Properties. The checklist contains five items (six if the optional XTS module is in use). Specify solution control The first item. This is only visible when the XTS Module is active. AFT Standard fluid – This fluid model accesses fluid data from the AFT Standard database. Once the Checklist is complete. open the Output Control window (see Figure 4) and enter a title on the General tab. mk:@MSITStore:C:\AFT%20Products\AFT%20Fathom%207. Specify output control The second item on the Checklist is Specify Output Control. Unspecified fluid – This fluid model allows you to directly type in the density. Step 3. If necessary. You can model the fluid properties in one of five ways. These fluid properties are pressure and temperature dependent. You may or may not see a sixth Checklist item called Transient Control. You type in the desired condition (e. This fluid model supports heat transfer analysis.. Like Solution Control. you must open the System Properties window (see Figure 5). This window allows you to specify your fluid properties (density. Figure 3: The Checklist tracks the model’s status. and optional vapor pressure). 4. the Model Status light in the lower left corner turns from red to green. you do not need to adjust Solution Control values. 2. if desired. 16/03/2013 . These fluid properties are pressure and temperature dependent. In general.. this window allows you to select the specific output parameters you want in your output.0\Examples\FathomEx. You also can choose the units for the output. click the Calculate Properties button and the required properties are calculated. Custom fluids are created by opening the Fluid Database window from the AFT Fathom Database menu or by clicking the Edit Fluid List button in the System Properties window. Specify system properties The third item on the checklist is Specify System Properties. Complete the first three checklist requirements Next. viscosity and vapor pressure. In this case. you will be required to also enter heat transfer information for the pipes and temperature for some of the junctions. Chempak Mixture – This fluid model allows you to create a liquid mixture from among the Chempak database fluids. for any pipe in the Pipe Specifications window. heat transfer is disabled when Gas Properties are selected. In addition. Click the General tab. Figure 4: The Output Control window lets you customize the output. You may want to add a descriptive title for the model. C..g. These fluid properties are either temperature dependent or dependent on the solids concentration. Fluids that allow heat transfer can be modeled by choosing the Heat Transfer with Energy Balance option. Each item needs to be completed before AFT Fathom allows you to run the Solver. 3. 5. B. To complete this item. is always checked when you start AFT Fathom because AFT Fathom assigns default solution control parameters. The Status Bar at the bottom of the AFT Fathom window also reflects the state of each Checklist item (see Figure 1).Beginner: Three Reservoir Problem Página 5 de 11 Figure 2h: Walk Through Model with all objects connected. (Figure 4 shows the Output Control window). Specify Solution Control. this item is always checked when you start AFT Fathom. click the checkmark on the Toolbar that runs across the top of the AFT Fathom window. gravitational acceleration and atmospheric pressure. since AFT Fathom calculates flow on an incompressible basis. You can then enter different property values. Users can add their own fluids to this database. depending upon which was selected. temperature). Default Output Control parameters and a default title are assigned. For models with variable fluid properties. 16/03/2013 . the ID numbers for all undefined pipes and junctions are displayed in red on the Workspace. The Optional tab allows you to enter different types of optional data. or both are displayed on the Workspace. By default. Show Object Status is toggled on or off. For information. by entering it in the Name field at the top of the window. D. then choose "Water at 1 atm" from the list and click the Add to Model button. Note: You can also open an object's Specifications window by selecting the object (clicking on it) and then either pressing the Enter key or clicking the Open Pipe/Jct Window icon on the Toolbar. This item encompasses the proper input data and connectivity for all pipes and junctions. energy cost calculations are not enabled and thus this fourth Checklist item is checked off. Open the checklist once more or observe the Status Bar and you should now see the third item checked off. Some junction types also allow you to specify an initial pressure as well as other junction specific-data. Specify cost settings In the standard AFT Fathom the Cost Settings window allows you to apply energy cost data to pumps. If this is visible. Objects that are completely defined have their ID numbers displayed in black. You can also specify a depth for the pipe.. which are applied to the pressure loss calculations for the junction in order to give additional safety margin to the model. you could choose Show Object Status from the View menu). if desired. You can select whether the junction number. To later change the loss factors. mk:@MSITStore:C:\AFT%20Products\AFT%20Fathom%207. click the Calculate Properties button and click OK. click within the pipe table and enter the loss. By default the junction’s name is the junction type. If the XTS Module is active. choose the desired junction from the Database list. there will be a sixth Checklist item called Transient Control. all the objects' ID numbers will change to red when you turn on Show Object Status. The highlight feature displays all the required information in the Specifications window in light blue. If Show Object Status is turned on. is disabled. which is not required for constant density models. The Copy Data From Jct list will show all the junctions of the same type in the model. name. To select a junction from the custom database. open the J1 Reservoir Specifications window (see Figure 6) by double-clicking the J1 icon. as can the size of the icon. the name of this reservoir is Supply Tank A. Step 4. allowing you to enter text describing the junction or documenting any assumptions. Define Reservoir J1 To define the first reservoir.0\Examples\FathomEx. The junction icon graphic can be changed. The Density option. The Temperature option. The highlight is on by default.. Design factors can be entered for most junctions. You can give the component a name. Most junction types can be entered into a custom databaseallowing the junction to be used multiple times or shared between users. The default selection is the Custom option with loss factors specified as zero. The name can be displayed on the Workspace. You can assign any unit of length found in the adjacent dropdown list box of units. You can enter standard losses by selecting the option buttons at the right. which is only used when heat transfer is chosen in the System Properties window. Note: You can specify preferred units for many parameters (such as meters for length) in the Parameter & Unit Preferences window. Object status Every pipe and junction has an object status.Beginner: Three Reservoir Problem Página 6 de 11 Select System Properties from the Analysis menu to open the System Properties window. click the floodlight icon on the Toolbar (alternatively. Enter surface pressure of 1 atmosphere (atm) and leave the pipe depth as zero in the table on the Pipe Depth & Loss Coefficients tab. there is no need for cost information and this item can be skipped. When Show Object Status is on. For this example. Each time you click the floodlight. the Cost Settings window allows application of other types of cost data when using the CST Module. Enter 21° C in the temperature box. As we are not calculating energy costs here. Enter a reservoir surface elevation of 90 meters. You can toggle the highlight off and on by double-clicking anywhere in the window or by pressing the F2 key. you can skip this Checklist item for this example. The current junction will get the properties from the database component. is also disabled. Each junction has a tab for notes. The highlight feature can also be turned on or off by selecting it on the Options menu. Click OK. select the AFT Standard fluid option. A. This will copy selected the parameters from an existing junction in the model to the current junction. The pipe table on the Pipe Depth & Loss Coefficients tab allows you to specify entrance and exit loss factors for each pipe connected to the reservoir (in this case there is one). Figure 5: The System Properties window lets you enter physical properties. Define All Pipes and Junctions. you should see the J1 ID number turn black again. In Figure 6. is not as straightforward to satisfy as the first three. Visual Report or in the Output. Undefined Objects window The Undefined Objects window lists all undefined pipes and junctions and further displays the items that are not yet defined. Define the model components (checklist item #5) The fifth item on the checklist. The properties for AFT Standard water are given only as a function of temperature. (These colors are configurable through Workspace Preferences from the Options menu. The object status tells you whether the object is defined according to AFT Fathom's requirements. To see the status of the objects in your model. telling you that J1 is now completely defined.) Because you have not yet defined the pipes and junctions in this sample problem. and a surface pressure of 1 atm for both. respectively. Position the mouse pointer on J1 and hold down the right mouse button.0\Examples\FathomEx. open the Specifications windows for Reservoir junctions J2 and J3 and enter surface elevations of 60 meters and 30 meters. and J4 Next. J3. as shown in Figure 7. The last remaining undefined junction is the J4 Branch junction. by using the Inspection feature. You could associate loss factors with each pipe by clicking within the pipe table and entering the data. You could also click the Optional tab then specify a flow source or sink at the junction. All the junctions have now been defined. Open the J4 Branch Specifications window (see Figure 8).. Enter an elevation of zero meters for the J4 Branch junction (an elevation must be defined for all junctions). Click OK. When you enter this data you should see the ID number of each junction on the Workspace turn black. Save the model again before proceeding. Leave the pipe depth as zero for each. because the status has changed to defined. Define junctions J2. all three connecting pipes should be displayed in the pipe table area.Beginner: Three Reservoir Problem Página 7 de 11 Figure 6: Specifications window for Reservoir J1 (highlight on). mk:@MSITStore:C:\AFT%20Products\AFT%20Fathom%207. 16/03/2013 . An information box appears. In this window. in read-only fashion. Inspecting is a faster way of examining the input in an object than opening the Specifications window. The Inspection feature You can check the input parameters for J1 quickly.. B. Figure 7: Inspecting from the Workspace with right mouse button. for now leave this as zero. The checklist should now be complete. The Model Data window gives you a textbased perspective of your model. 16/03/2013 .3 cm ID). and select the Material as Steel with a nominal 8 inches (20. Selections can be copied to the clipboard and transferred into other Windows programs. Select the material as Steel. double-click the pipe object on the Workspace. the Toolbar. enter a length of 915 meters. Review input in the Model Data window The Model Data window is shown in Figure 10. The Inspect feature also works within the Pipe Specifications window. Everything is ready to submit to the Solver. saved to a formatted file. In the Specifications window for Pipe 3.0\Examples\FathomEx. schedule 40. The Model Data window allows access to all Specifications windows by double-clicking the appropriate ID number in the far left column of the table. E. clicking anywhere in the Model Data window if it has been restored or. nominal 8 inches (10. pressing Ctrl-M. we did the junctions first.. or printed out for review. (You can also use this feature in junction Specifications windows for checking connected pipe properties. Before running the model. You may want to try this right now.. schedule 40. It is also a good idea to review the input using the Model Data window.Beginner: Three Reservoir Problem Página 8 de 11 Figure 8: Specifications window for Branch J4 C. you can jump directly to the junction's Specifications window.3 cm ID) size. Or you can click the Jump button to jump to any other part of your model. The next step is to define all the pipes. For Pipe P1. clicking on the minimized window at the bottom of the screen and restoring it. Pipe P1 is now defined. Data is displayed in three general areas. The top is called the general area. nominal 8 inches (10. Figure 9: Specifications window for Pipe P1 D. In this example. First open the Pipe Specifications window for Pipe P1 (see Figure 9). Define Pipe P1 Data for pipes and junctions can be entered in any order. save it to file one more time. you can select it from the Window menu.3 cm ID). This is helpful when you want to quickly check the properties of connecting objects. enter a length of 300 meters. To Inspect a connected junction. To change to this window. Click OK. the middle the pipe area and the bottom the junction area.) By double-clicking the connected junction number. printed to an Adobe PDF. if minimized. position the mouse pointer on the connected junction's ID number and hold down the right mouse button. Define Pipes P2 and P3 Open the Specifications window for Pipe 2 and enter a length of 610 meters. To open the Pipe Specifications window. Select the material as Steel. mk:@MSITStore:C:\AFT%20Products\AFT%20Fathom%207. The Pipe Specifications window The Pipe Specifications window offers control over all important flow system parameters that are related to pipes. schedule 40. 16/03/2013 . click the View Output button and the text-based Output window will appear (see Figure 12). The information in the Output window can be reviewed visually. Three areas are shown.Beginner: Three Reservoir Problem Página 9 de 11 Figure 10: The Model Data window shows all input in text form. The Output Control window allows you to obtain the parameters. A. On the right side of the Pipe tab is the list of selected output parameters. Select the Pipe tab. still in the second column. Step 6. double-click the column header Velocity in the Output window Pipe Results Table. Click OK and Yes to display changes to the current results. Review the output The Output window is similar in structure to the Model Data window. printed to an Adobe PDF file. Select Output Control from the Analysis menu one more time. the Pipe Results table will show volumetric flow rate in the second column (Figure 12) with units of m3/hr (meters cubed per minute). During execution. Select the Velocity parameter and use the Reorder scroll bar to move it up to the top of the parameter list.0\Examples\FathomEx. and you can enlarge each area by selecting the options from the Show list box on the Toolbar or from the View menu. The items displayed in the tables are those items you chose in the Output Control window (Checklist item # 2). Click Volumetric Flow Rate and change the units by selecting m3/hr (meters cubed per hour) from the list at the bottom. and printed out on the printer. Figure 11: The Solution Progress window displays the convergence progress. This flexibility will help you work with AFT Fathom in the way that is most meaningful to you. You should see the volumetric flow rate results. units and order you prefer in your output.. Select Output Control from the Analysis menu or Toolbar. Modify the output format If you selected the default AFT Fathom Output Control. Notice the Velocity results in the third column. reducing the possibility of errors. These changes are extended to the Output Control parameter data you have previously set. You can use this window to pause or cancel the Solver's activity. You will see in the Pipe Results table that the first column now contains Velocity and the third column contains the volumetric flow rate. This will open a window in which you can change the units again if you prefer. exported to a spreadsheet-ready format. Click OK to display the changes to the current results. Step 5. Lastly. saved to file. mk:@MSITStore:C:\AFT%20Products\AFT%20Fathom%207. When the solution is complete. in units of gal/hr.. the Solution Progress window is displayed (see Figure 11). The Reorder scroll bar on the far right allows you to reorder parameters in the list. Run the Solver Choose Run from the Analysis menu or click the arrow icon on the Toolbar. copied to the clipboard. by clicking anywhere on the window if it’s been restored or. View the Visual Report Change to the Visual Report window by choosing it from the Window menu. mk:@MSITStore:C:\AFT%20Products\AFT%20Fathom%207. by pressing Ctrl-I. The Visual Report window graphic is generated (see Figure 14). if minimized. or printed to an Adobe PDF file. then click the Show button. You can change this by selecting smaller fonts or by dragging the text to a new area to increase clarity (this has already been done in Figure 14). The Graph Results window offers full-featured Windows plot preparation. A graph appears showing the static pressure along the flow defined by pipes 1 and 2.0\Examples\FathomEx. select Profile Along a Flow Path. copied to the clipboard. saved to a file. Click the Visual Report Control button on the Toolbar (or View menu) and open the Visual Report Control window. C.. Select Volumetric Flow Rate in the Pipe Results area and Gradeline Hydraulic Inlet in the Junction Results area.. It also can operate in "Input Mode" where it displays input data. or printed to an Adobe PDF file. 16/03/2013 . From the Graph Parameters list choose Static Pressure. The graph’s x-y data can be exported to file or copied to the clipboard. Graph the results Change to the Graph Results window by choosing it from the menu or clicking its icon. Figure 13: The Visual Report Control window selects content for the Visual Report window. Figure 16. You can use the other buttons in the Graph Results window to change the graph appearance and to save and import data for cross-plotting. saved to file. shown in Figure 13. It is common for the text in the Visual Report window to overlap when first generated.Beginner: Three Reservoir Problem Página 10 de 11 Figure 12: The Output window displays output in text form. This window allows you to integrate your text results with the graphic layout of your pipe network. In the Pipe and Junction selection area click on Pipe 1 and 2. which integrates results with model layout Figure 14: The Visual Report window displays output data on the input schematic. Click the Show button. From the tabs. Click the Select Graph Data button to open the Select Graph Data window shown in Figure 15. by clicking on the minimized window at the bottom of the Workspace to restore it. This window can be printed or copied to the clipboard for import into other Windows graphics programs. The Graph Results window can be printed. B. Figure 16: The Graph Results window offers full-featured plot generation..Beginner: Three Reservoir Problem Página 11 de 11 Figure 15: The Select Data window controls the Graph Results content. Conclusion You have now used AFT Fathom's five Primary Windows to build a simple model..0\Examples\FathomEx. 16/03/2013 . mk:@MSITStore:C:\AFT%20Products\AFT%20Fathom%207. Review the rest of this User’s Guide for more detailed information on each of the windows and functions.