Volume mesh problems

Parms · March 13, 2017, 18:02

Hello,

I am currently working on a project to analyse the flow over a Ahmed Body. I have been told to use an unstructured volume mesh to do this, however being the first time using ICEM I am having some issues.

From my understanding, I have to;

- Import geometry from Solidworks
- Draw wind box around the car
- Add surfaces to the car and box
- Divide up the geometry into parts (Car, Walls, Inlet & Outlet)
- Add bodies? (I have added a 'FLUID' region and a 'ORFN' region)
- Create a mesh
- Play with Global and Part mesh set-up
- Add density box in wake region
- Compute mesh

Have I missed any steps?

Does anyone have experience with using unstructured volume meshes in ICEM that would be able to give me some advice? I have used the search, but haven't found anything relevant.

Thanks,

Parms

ztdep · March 13, 2017, 21:48

yes, you are right.
The most important step is to adjust the distribution of mesh node.
Perform computations with a small grid system to get some insight with the gradient of variables. So you can refine the mesh at coressponding places.

March 13, 2017, 18:02	Volume mesh problems	#1
Parms New Member Join Date: Dec 2016 Posts: 2 Rep Power: 0	Hello, I am currently working on a project to analyse the flow over a Ahmed Body. I have been told to use an unstructured volume mesh to do this, however being the first time using ICEM I am having some issues. From my understanding, I have to; - Import geometry from Solidworks - Draw wind box around the car - Add surfaces to the car and box - Divide up the geometry into parts (Car, Walls, Inlet & Outlet) - Add bodies? (I have added a 'FLUID' region and a 'ORFN' region) - Create a mesh - Play with Global and Part mesh set-up - Add density box in wake region - Compute mesh Have I missed any steps? Does anyone have experience with using unstructured volume meshes in ICEM that would be able to give me some advice? I have used the search, but haven't found anything relevant. Thanks, Parms

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[ICEM] Problems with coedge curves and surfaces	tommymoose	ANSYS Meshing & Geometry	6	December 1, 2020 11:12
decomposePar problem: Cell 0contains face labels out of range	vaina74	OpenFOAM Pre-Processing	37	July 20, 2020 05:38
Problems creating volume mesh	willful	STAR-CCM+	4	February 18, 2016 15:29
[blockMesh] non-orthogonal faces and incorrect orientation?	nennbs	OpenFOAM Meshing & Mesh Conversion	7	April 17, 2013 05:42
How to control Minximum mesh space?	hung	FLUENT	7	April 18, 2005 09:38

March 13, 2017, 21:48		#2
ztdep Senior Member p ding Join Date: Mar 2009 Posts: 427 Rep Power: 19	yes, you are right. The most important step is to adjust the distribution of mesh node. Perform computations with a small grid system to get some insight with the gradient of variables. So you can refine the mesh at coressponding places.