CAD System Web Site - Computer Aided Design Software
i NET1000.COM
by Makoto Honda
Last Update: 2011-February-05                   Update Info     Site Index     Licensing     Copyright Notice     Privacy Policy     Contact Us  

 

 CFD Grids

 User Guide
 Domain Slicing

 Element Insertion
 Grid Generation
 Test Commands


 
HOME  

                                   
CFD - Test Commands
Computer-Aided Design Software
(CAD System)

 Computational Fluid Dynamics

   FM - General Tests Command

 (A) This command makes a multi-box domain.

  1. Key in the domain location coordinate (ex. 2,2,2 and Enter).
  2. Key in 2,2,2 or any three integers (length, width, height) and Enter to make a multi-box.
  3. Repeat the keyin of the three values (a few times).
  4. Then hit End key to finish the domain creation.
  5. Hit Spacebar to make a "structured list".
  6. Now, we can SLICE the domain by Keying in 3 integers, separated by comma and then Enter.  (ex. 1, 0, 5)
 -- 1st number is IJK cut (1 or 2 or 3)
 -- 2nd number is the cell number (0, 1, 2, ...)
 -- 3rd number is the number of cuts, say 5.
  7. Repeat the above step 6 to slice further...
  8. Then hit Spacebar to mesh.
  9. Hit Tab-key to move mesh plane.
 10. Hit Spacebar to toggle the mesh move direction I J K.
 11. Now, we can go to Slice Command and/or Mesh Command

 (B) This command also allows a testing of a preset element insertion into a one-cell domain.

  0. Hit Tab key once, first, to get into the insertion scenario.
  1. Hit Spacebar - a domain appears.
  2. Hit Spacebar - an element to be inserted appears.
  3. Hit Spacebar - decomposition of the "epi-center" cells commences...  
  4. Hit Spacebar several times - the epi-center decomposition improved.  
  5. Hit Spacebar - decomposition of the entire domain starts...  
  6. Hit Spacebar several times - the entire domain decomposition finishes.  
  7. Hit Spacebar - Meshing completes, showing IJK plane meshes.
  8. Hit Tab key repeatedly - Mesh plane moves... 
  9. Hit Spacebar - Toggles through I, J, K planes for mesh movement by Spacebar. 
 10. Hit Spacebar repeatedly - for mesh movement for a different direction.  
 11. -- Can go to Mesh Command now and key in the number of grids per cell.
 12. Hit Tab key repeatedly to move mesh plane.

 (C) This command also tests an element insertion into a muli-cell domain.

  1. Hit Tab key twice, first - and then repeat the same process as above.

 (D) Tests an element insertion into a multi-cell domain, but the element extends over multiple cells..

  1. Hit Tab key three times - and then repeat the same process as above.

 

   FM - CFD Domain Creation

This command creates a CFD domain, to be used as a starting domain for other operations.

  1. Click Tab key once (for a single cell domain) or twice (for a multi-cell domain).
  2. Then, clcik Spacebar once. Now the domain is structured.
  3. You can go to Slice or Mesh...

 

   FM - Make a Structured List

This command makes the domain "structured".  Many commands (Insert, Slice, Mesh) assume that the domain is already structured before operating on it. Also, these commands returns the domain structured after the operation is done. So this command is only needed if a domain is constructed manually by points and edges......

  1. Hit Spacebar to make the domain structured.

 

   FM - Slice Command

This command allows a slicing of the domain. (The domain must have been structured prior to slicing). After each slicing operation, the domain is automatically structured.

  1. Slice the domain by keying in 3 integers, separated by comma and then Enter.  (ex. 1, 0, 5)
 -- 1st number is IJK cut (1=i or 2=j or 3=k)
 -- 2nd number is the cell number (0, 1, 2, ...) - must be 0 if only one cell.
 -- 3rd number is the number of cuts, say 5.
  2. You can apply the above step repeatedly.
  3. Now, you can go to Mesh Command.
 

 

   FM - Insert Element Command

This command tests an element insertion.

  1. xxxx

 

   FM - Mesh Generation Command

This command generates mesh (Domain must have been structured before meshing).

  1. Key in the number of grids per cell, say, 5, and Enter.
  2. Hit Tab key repeatedly to move the current mesh plane... 
  3. Hit Spacebar - Toggles through I, J, K planes for mesh movement by Tab-key. 
  4. You can key in a new grid number anytime.


 

CAD System Web Site - Computer Aided Design Software:  Copyright 2010-2013 Makoto Honda. All Rights Reserved.  
   

Copyright 2010-2013 Makoto Honda. All Rights Reserved.                                       www.iNET1000.com