Week 3 Challenge : CFD meshing on Turbocharger

https://drive.google.com/file/d/18dp2nV7ADMwmVc9I_Myx3HEShG25vFF_/view?usp=sharing

volumetric meshed file drive link(uploaded in drive because the file was not uploading in answer box)

error in file shown in above figs

error solved  fig shown in above figs

meshed parts shown here

volumetric meshed part is shown here

explaination

Challenge 3

 

The steps involved in solving challenge 2 as follows: -

Check for geometry error

1. Firstly, the file is imported to ANSA workspace.
2. Workpiece is checked for geometry. Except for sharp edges and unmeshed marcos.
3. There will be many errors of showing many single coned surfaces (edge with only one surface)
4. Identify those single cons using control+shift key pressing before that from face draw section select marcos, perims and single.
5. Identified single con can be converted to double cons using new command from face section and selecting b/w existing surf, fitted and coons by looking at preview and selecting appropriate fill void section to convert the single cons to double.
6. Fill hole command can also be used from cons section to fill the continuous holes in one go
7. Once the all the single cons were filled again check for geometry.
8. Now there show the triple cons error ignore that because where their surface is connected without that the attachment of workpiece is not possible.
9. Convert all the volume into single volume to do volumetric mesh

• Removed single con is shown in turbot mesh erro free.ansa file.

Assigning PID

1. Once the all-geometry error was removed then it’s time to assign PID (property id)
2. Click on property double time then there is a section opened in that there is a shell property named PID is there
3. Now add new PIDs for bottom casing inlet, bottom casing outlet, casing inlet casing outlet, compressor casing, impeller, shaft rotator, inlet casing caver, turbo casing, blade stage 1 blade stage 2. Were defined and applied.
4. Once PIDs created its time to assigning PIDs to the parts of workpiece by applying PIDs for particular part.

Meshing 5mm

5mm mesh is done for bottom casing inlet, bottom casing outlet, casing inlet casing outlet, compressor casing

1. define length of mesh using length command from mesh>parimeters section.
2. Once double click on length there will be a pop up showing up with two options first select perimeters and select whole workpiece using left click on mouse and selecting whole workpiece then middle click enter length as 5 same done for marcos.
3. Once selected perimeter and marcos length now from quality criteria define minimum and maximum length as 3 and 7 respectively
4. The click on mesh parameter and enter target length as 5 mm and element type as Tria.
5. Once done with all of above steps no moves to mesh generation section select spot mesh command and mesh by using PID region from feature selection section.
6. Select each PIDs and click on spot mesh and middle click to mesh

Meshing 2mm

2mm mesh is done for impeller.

1. define length of mesh using length command from mesh>parimeters section.
2. Once double click on length there will be a pop up showing up with two options first select perimeters and select whole workpiece using left click on mouse and selecting whole workpiece then middle click enter length as 5 same done for marcos.
3. Once selected perimeter and marcos length now from quality criteria define minimum and maximum length as 3 and 7 respectively
4. The click on mesh parameter and enter target length as 5 mm and element type as Tria.
5. Once done with all of above steps no moves to mesh generation section select spot mesh command and mesh by using PID region from feature selection section.
6. Select each PIDs and click on spot mesh and middle click to mesh

 

Meshing 1mm

1mm mesh is done for blades and shaft.

1. define length of mesh using length command from mesh>parimeters section.
2. Once double click on length there will be a pop up showing up with two options first select perimeters and select whole workpiece using left click on mouse and selecting whole workpiece then middle click enter length as 5 same done for marcos.
3. Once selected perimeter and marcos length now from quality criteria define minimum and maximum length as 3 and 7 respectively
4. The click on mesh parameter and enter target length as 5 mm and element type as Tria.
5. Once done with all of above steps no moves to mesh generation section select spot mesh command and mesh by using PID region from feature selection section.
6. Select each PIDs and click on spot mesh and middle click to mesh
7. Where ever there is missed mesh is mixed those parts were meshed but he meshes range from high value to low mesh length.
8. The meshed file is shown turbocharger meshed file

Volumetric mesh

The volumetric mesh steps as follows

1. First volumes are defined by auto detecting.
2. The unwanted volumes were deleted then the each volume were meshed for tetra cfd meshed and the wait till all part get meshed.
3. The volume meshed file is uploaded in drive and link is paste in anser box.