Import tetrehedral mesh - how?
 

Hello, StarCD users,

I don't know how to import a tetrehedral mesh generated by another package into STAR-CD.

The datum format that I generated with another package is like this:

# for nodes

NodeNumber, X_Coordinate, Y_Coordinate, Z_Coordinate

...

# for cells

CellNumber, NodeNo_1, NodeNo_2, NodeNo_3, NodeNo_4

...

I can put a "V" letter in front of each node entry and put a "C" to replace the cell number of each cell entry, then read in the modified file from PRO-STAR, in order to generate the vertices and cells. But this only works for a hexahedral grid, i.e., each cell have eight nodes.

Should I further modify each cell entry to force it ot be an eight-node sequence? Because the UserGuide tells me I can use an N1-N2-N3-N3-N4-N4-N4-N4 sequence to present an N1-N2-N3-N4 tetrahedral cell. But will the modifications cause left-hand/crack or other errors?

Thanks for you suggestions,

Jiaying

Re: Import tetrehedral mesh - how?
 

Hi Jiaying, try to use the standard formats like Nastran to import the grid. That's the way I do it. Cheers, Thomas

Re: Import tetrehedral mesh - how?
 

you can use shell script to convert the current node and cell to star-cd vertex and cell format and then vread as well as cread them in star-cd.

Re: Import tetrehedral mesh - how?
 

Yes, that's what I did, and it works well. Thanks, Jiaying