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  • WORKSHOP - Working with Transfer Objects
    print The non physical settings suggested at first below are such as to make the calculations rapid rather than accurate Starting the tutorial First activate the PHOENICS Satellite module in VR Editor mode by either clicking on the PHOENICS icon on the desktop or entering the Run Modules panel of the PHOENICS Commander and the clicking the VRE button or typing vre at the command prompt If you are uncertain of or wish to change your working directory click on Options Change working directory In PHOENICS VR Editor When the Editor starts execution what it shows on the screen will depend on what happens to be in your working directory You can disregard this In order to make a fresh start click on File then on Start New Case then on Core then click on OK to confirm the resetting You are now ready to begin Load the Labyrinth Case If you have recently done the labyrinth tutorial and have saved the cases as directed you can click on File Open existing case and select labyrinth case2 If these files are not available you can load a copy of the labyrinth case from the Library Click on File Load from Library then Browse Click the next to Tutorial cases to open that branch then again for General cases Select case 621 Simulation of a Labyrinth Flow and click OK We must make a first run in which the OUTLET object will write out its data at the end of the Solver run Modify the OUTLET object Double click the OUTLET object Click on Attributes Change the No next to Acts as Export to Yes In the file name entry box enter outflow without the When the solver runs it will write out the flow conditons at the OUTLET object into the file outflow pob Click on OK to exit the Object Dialogue Box Running the Solver In the PHOENICS VR environment click on Run Solver Earth and click on OK to confirm running Earth Using the VR Viewer In the PHOENICS VR environment click on Run Post processor then GUI Post processor VR Viewer Click OK on the file names dialog to accept the default files To view Vectors click on the Vector toggle Vectors are coloured by the current plotting variable but their length is always related to the absolute velocity Contours click on the Contour toggle Streamlines click on the Streamline management button Iso surfaces click on the Iso Surface toggle To select the plotting variable To select Pressure click on the Select Pressure button To select Velocity click on the Select Velocity button To select Temperature click on the Select Temperature button To select any other variable click on the Select a Variable button To change the direction of the plotting plane set the slice direction to X Y or Z To change the position of the plotting plane move the probe using the probe position buttons Alternatively click on the probe icon on the toolbar or

    Original URL path: http://www.cham.co.uk/phoenics/d_polis/d_wkshp/transfer/transfr1.htm (2016-02-15)
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  • WORKSHOP - Working with Thin Plates
    or click on Start programs PHOENICS PHOENICS From the commander level To enter the PHOENICS VR environment click on the Run vre icon in the left column In PHOENICS VR environment Start a new case click on File then on Start new case Select Core from the list of Special Purpose products and click OK To enter VR Editor This is the default mode of operation Within VR Editor Create an Angled plate blockage Click on on the VR Editor panel or the O icon on the tool bar to bring up the Object Management Dialog and then on Object New New object On the Size page set the size to 0 3 1 0 0 3 for X Y and Z On the Place page set the position to 0 1 0 0 0 1 On the Shape page click on Default next to Geometry In the file browser window that opens go to public shapes and select wedge Click Open On the Options page click on Rotation options and advance the Rotate object face indicator to 2 This will turn the wedge within its bounding box Click OK On the General page click on Attributes Click on 198 Solid next to Material Select 299 Domain material for angled plate obj from he list and click OK Click OK twice to close the object specification dialog We will now duplicate this object using the array copy feature and select different shapes for the copies Make the copies Select the wedge object in the Object Management list Click on Object Array object or on on the hand set or tool bar On the Array settings dialog set the Dimension to 2 and Pitch to 0 5 for both X and Z Dimension sets the number of copies to make in each direction Pitch sets the distance between origins of the copies Click OK The screen should look like this Change the shapes of the copied wedges Double click on the lower right wedge On the Shape page click on wedge next to Geometry In the file browser window that opens go to public shapes and select half cylinder Click Open On the Options page click on Rotation options and advance the Rotate object face indicator to 5 Click OK twice to close the Object Specification dialog Double click on the upper left wedge On the Shape page click on wedge next to Geometry In the file browser window that opens go to public shapes and select quarter cylinder Click Open On the Options page click on Rotation options and advance the Rotate object face indicator to 5 Click OK twice to close the Object Specification dialog Double click on the upper right wedge On the Shape page click on wedge next to Geometry In the file browser window that opens go to public shapes and select corner Click Open On the Options page click on Rotation options and advance the Rotate object face indicator to 5 Click OK twice to

    Original URL path: http://www.cham.co.uk/phoenics/d_polis/d_wkshp/ang-plt/ang-plt1.htm (2016-02-15)
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  • WORKSHOP - Flow through a Forest
    case a context menu will appear select Hide object to remove it from the display The wind is only hidden from view it is still active in the model Create the slope Object New and New Object Change name to SLOPE The slope object represents the terrain the forest is growing on any shape could be used but for the tutorial we will assume that the slope is constant so a wedge shape can be used The slope will start at X 300m from the domain origin so it will be 700m long It will extend completely across the domain in the Y direction The angle of the slope is to be 4 The height is thus 700 tan 4 48 95m Click on Place and set POSITION of object as Xpos 300 0 Ypos 0 0 Zpos 0 0 Click on Size and set SIZE of object as Xsize tick to end Ysize tick To end Zsize 48 95 To change the shape of the slope from the default cube to the desired wedge click Shape then the button next to Geometry Navigate to public shapes and select wedge The shape will change but the slope will be in the wrong direction We can fix this by flipping the shape within its bounding box until it looks right Click Options Rotation options and increment Rotate object face until the slope is in the right direction This will happen at position 2 and 22 Click OK We need to set the roughness parameters of the slope to match the wind ground plane Click General then Attributes Set the Roughness to 0 5m same as shown on the wind dialog attributes and the Wall function law to Fully rough Click OK Click on OK to exit from the Object Dialogue Box Create the Forest Object New and New Object Change name to FOREST Click on Size and set SIZE of object as Xsize 500 0 Ysize 500 0 Zsize 15 0 Click on Place and set POSITION of object as Xpos 300 0 Ypos 250 0 Zpos 0 0 Set the rotation angle about Y to 4 Click on Shape In Geometry select public SHAPES CYLINDER and click on Open then OK on the next dialog Click on Genera Define Type FOLIAGE Click on Attributes to open the Foliage Attributes menu Set the Leaf Area Index to Very dense and the Drag Coefficient to Conifers Click on OK to close the Object Dialogue Box Click Options and set the object colour to green The screen should now look like this Set the grid Click on the Mesh toggle button The default mesh shown as blue and orange lines will appear on the screen The orange lines are regions defined by the bounding boxes of the objects The mesh in X and Y is adequate for this tutorial but more cells near the ground are required Click on the mesh anywhere to bring up the Grid Mesh Settings dialog Click on Edit

    Original URL path: http://www.cham.co.uk/phoenics/d_polis/d_wkshp/foliage/foli1.htm (2016-02-15)
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  • WORKSHOP - PARSOL
    axis Create the objects making up the scene Click on the Object Management button O on the toolbar or on the hand set This will display a currently empty apart from the domain list of objects Create the first upper angled blockage In the Object management dialog click on Object New and New Object Set the name to WEDGE1 Click on the Size button and enter XSize 8 0 The slope is 30º so the height of the lower wedge is 8 tan 30 4 62 YSize 4 62 ZSize tick To end Click on the Place button and enter XPos 0 0 YPos tick At end ZPos 0 0 Click on the Shape button and select Geometry from PUBLIC SHAPES WEDGE and click on Open On Options click Rotation options and click the up arrow by Rotate object face until the wedge is in the right position This will be for position 6 Click OK Click on General and Attributes Change the material to 199 Solid allowing fluid slip Click on OK and OK Create the second lower angled blockage by duplication Click on Duplicate object button and then click OK to confirm the duplication Double click the new object in the Object Management Dialog to open its dialog Change the name to WEDGE2 Un tick At end for Y and change the Y position to 0 0 On Options click Rotation options and click the up arrow by Rotate object face until the wedge is in the right position This will be for position 18 Click OK and OK Create the fluid inlet Click on Settings New and New Object Set the name to IN Click on Size and enter XSize 0 0 YSize 2 0 ZSize To end Click on Place and enter XPos 0 0 YPos 0 0 ZPos 0 0 Click on General and set Type to Inlet Click on Attributes and set X Direction velocity to 0 866 m s this is 1 cos 30 Y Direction velocity to 0 5 m s this is 1 sin 30 Z Direction velocity to 0 0 m s Click on OK and on OK Create the fluid outlet Click on Settings New and New Object Set the name to OUT Click on Size and enter XSize 0 0 YSize 2 0 ZSize To end Click on Place and enter XPos At end YPos At end ZPos 0 0 Click on General Set Type to Outlet Click on OK Setting the Probe Location Click on the probe icon on the toolbar or double click the probe itself and move the probe to X 4 0 Y 3 31 Z 0 5 Set remaining Solution Control parameters Click on Main Menu Under Numerics and set Total number of iterations to 350 Click on Top menu and on OK Running the Solver In the PHOENICS VR environment click on Run Solver and click on OK to confirm running Earth Using the VR Viewer In the PHOENICS VR environment click

    Original URL path: http://www.cham.co.uk/phoenics/d_polis/d_wkshp/wrkshp7.htm (2016-02-15)
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  • Fine Grid Embedding
    on OK OK Create fluid Outlet Click on Settings New and New Object Name outlet Click on Size and enter Xsize 0 0 Ysize 6 0 Zsize 1 0 Click on Place and enter Xpos 8 0 Ypos 0 0 Zpos 0 0 Click on General Type OUTLET Click on OK Create a Wall at the low side of the domain Click on Settings New New Object Name Lwall Click on Size and enter Xsize 8 0 Ysize 0 0 Zsize 1 0 Click on General Type PLATE Click on OK Create a Wall at the High side of the domain Click on Settings New New Object Name Hwall Click on Size and enter Xsize 8 0 Ysize 0 0 Zsize 1 0 Click on Place and enter Xpos 0 0 Ypos 6 0 Zpos 0 0 Click on General Type PLATE Click on OK Create the first Fine grid volume Click on Settings New and New Object Name fine1 Click on Size and enter Xsize 4 0 Ysize 2 0 Zsize 1 0 Click on Place and enter Xpos 2 0 Ypos 2 0 Zpos 0 0 Click on General Type FINE GRID VOL Click on Attributes Fineness X 2 Fineness Y 2 Fineness Z 1 This will double the grid within the fine grid object You may click on the mesh toggle button on the main controll panel to view the grid Click on OK OK Create the second Fine grid volume Click on Settings New and New Object Name fine2 Click on Size and enter Xsize 2 0 Ysize 1 0 Zsize 1 0 Click on Place and enter Xpos 3 0 Ypos 2 5 Zpos 0 0 Click on General Type FINE GRID VOL Click on Attributes Fineness X 2 Fineness Y 2 Fineness Z 1

    Original URL path: http://www.cham.co.uk/phoenics/d_polis/d_wkshp/wrkshp8.htm (2016-02-15)
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  • WORKSHOP - CAD Import / Datmaker: Importing and Repairing 3DS Files
    to close the Object dialog On the toolbar click the down arrow next to and select Fit to window The screen should look like this Checking for Obvious Errors Click on Domain in the Object management Dialog or click on the image background to release the highlighted object Using the mouse rotate pan and zoom the image to inspect the geometry Details of the mouse operation are given in TR 326 VR Editor Hand Set Mouse Control You should be able to find this peculiarity The tall building at the back appears inside out whatever angle it is viewed from To help diagnose the problem click View Show backs of objects This tells VR Editor to draw both sides of each facet not just those facing outwards The image should change to The inside out part now looks correct This is a good indication that the facets of the affected region are pointing in the wrong direction Turn View Show back of objects off again Repairing the error The Datmaker utility can be used to repair many common errors in geometry files Click Settings Datmaker operations The Datmaker GUI should appear In the input box for Select first object select B1 This is the object to be operated on As we have back to front facets make sure Consistent is ticked and Do Hole Mend is not then click OK to run Datmaker The repaired geometry will be called mygeom dat and a copy of the Q1 containing the model in its current pre repair state will be saved to saved q1 Both these names can be changed if required The saved q1 can be used to recover the model should something go very wrong with the repair If Post operation graphics display is ticked Datmaker will display the repaired geometry but this is not usually required by users The screen should now look like To make sure that everything is correct click View Show back of objects again to turn off double sided facet drawing The image should remain the same Rotate the image to look at it from all directions and check that there are no holes This should now not change when View Show backs of objects is turned on and off indicating that all the facts do indeed point outwards Checking for Detection Problems Having imported the geometry it is worth checking to see if it will be detected properly by the Earth solver Do do this we need to set a mesh and perform 2 or 3 sweeps iterations First make the domain size 150m bigger in X and Y and 50m bigger in Z For a real calculation the boundaries should be several times the height of the tallest building away from the buildings Click on the Mesh toggle on the hand set or toolbar then click on the image to bring up the Grid mesh Settings dialog Reset the Domain size to 815 in X 615 in Y and 413 in Z Toggle

    Original URL path: http://www.cham.co.uk/phoenics/d_polis/d_wkshp/cadimprt/3ds1.htm (2016-02-15)
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  • WORKSHOP - CAD Import / Datmaker: Splitting a CAD file into individual objects
    placed in the current working directory and all other defaults If this were a common geometry that was to be used in many projects it would be better to place it in the central store so that it was easily accessible The following dialog should appear Change the No next to Take size from CAD file to Yes then click OK The converted geometry file will now be read in The size of the new object will be set to 5 5m 2 3m 4 8m at 0 0 0 0 0 0 Click OK to close the Object specification dialog On the toolbar click the down arrow next to and select Fit to window The screen should look like this There are obvious holes in the blocks which need to be repaired Once these are fixed we will want to make each block a separate object Repairing the errors There are two reasons why holes may appear in the geometry There may be genuine holes in the surface facets are missing or The facets are present but point in the wrong direction To find out which of these is causing the problem we can tell VR Editor to draw all facets as double sided in which case we can see them from both sides To do this click View Show back of objects The screen should look like this Some of the holes have gone but some remain It would appear that this geometry contains both kinds of errors The Datmaker utility can be used to repair many common errors in geometry files and to split into closed volumes To start Datmaker click Settings Datmaker operations The Datmaker GUI should appear As the new object B1 should already be selected the input box for Select first object will contain B1 If it does not click the down arrow next to CHAM and select B1 This is the object to be operated on As we have holes and back to front facets make sure Do Hole Mend and Consistent are both ticked then click OK to run Datmaker The repaired geometry will be called mygeom dat and a copy of the Q1 containing the model in its current pre repair state will be saved to saved q1 Both these names can be changed if required The saved q1 can be used to recover the model should something go very wrong with the repair If Post operation graphics display is ticked Datmaker will display the repaired geometry but this is not usually required by users The screen should now look like To make sure that everything is correct click View Show back of objects again to turn off double sided facet drawing The image should remain the same Rotate the image to look at it from all directions and check that there are no holes Splitting into parts We will now use Datmaker again this time to split the geometry up into its constituent parts Click Settings Datmaker operations Make sure

    Original URL path: http://www.cham.co.uk/phoenics/d_polis/d_wkshp/cadimprt/stl4.htm (2016-02-15)
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  • WORKSHOP - Datmaker: Merging and Subtracting Objects
    1 Merging Objects Click on File Load from Libraries enter 274 in the case Number input box and clock OK Case 274 from the Input Library will be loaded when the Press RETURN to continue prompt appears place the cursor in the input box at the bottom of the Command Prompt window and press the RETURN key Then close the Command prompt window The screen should look like this The case concerns flow around a simple representation of a van half a van really as the X 0 plane is a symmetry boundary The body of the van is made up of four separate blockages as can be seen from the Object Management Dialog click on the VR Editor panel or the O icon on the tool bar We will make BODY1 BODY2 FWHL and RWHL into a single object Click on BODY1 in the Object management dialog or the largest of the grey blockages on the screen to select it then on Settings Datmaker operations The Datmaker GUI should appear As the object BODY1 should already be selected the input box for Select first object will contain BODY1 If it does not click the down arrow next to CHAM and select BODY1 This is the first object to be operated on Tick Object changes and then Union From the Other object s list or the screen select BODY2 FWHL and RWHL Un tick Do hole mend as we do not need to do any repairs The screen should look like this The repaired geometry will be called mygeom dat and a copy of the Q1 containing the model in its current pre repair state will be saved to saved q1 Both these names can be changed if required The saved q1 can be used to recover the model should something go very wrong with the repair If Post operation graphics display is ticked Datmaker will display the repaired geometry but this is not usually required by users Click OK to run Datmaker The screen should now look like this The Object management dialog should now show A new object MERGED 1 has appeared which is the result of merging the selected objects The originals have been made into NULL objects This is to ensure that the mesh is still exactly as it was Saving the results In the PHOENICS VR environment click on Save as a case make a new folder called Datmaker select the new folder and save as Union Part 2 Subtracting Objects We will now make a hole through the body of the van by using a domain material blockage On the Object management dialog click Object New New object On the Place tab set Xpos 0 5 Ypos 2 0 Zpos 5 5 On the Size tab set Xsiz 0 6 Ysiz 0 6 Zsiz 5 0 Back on the Place tab set the Rotation angle about X to 10 On the Shape tab click on Geometry Browse to public shapes and select cylinder jpg

    Original URL path: http://www.cham.co.uk/phoenics/d_polis/d_wkshp/cadimprt/datmaker1.htm (2016-02-15)
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