Mesh quality check for VWT
Altair EmployeeIn the introductory video for VWT , it was specified that even if the mesh quality is bad enough still VWT gives quite a reliable solution for the model we are trying to simulate. But it won't be absolute
I want to ask that which parameters in the quality check of mesh do we have to take care of to get the best simulations of a race car(identical to real life)?
Of these mentioned below in the image file
<?xml version="1.0" encoding="UTF-8"?>
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The reason I avoid very small elements is that, generally it can mean a skewed element.
Fine mesh generally gives a better results. But in CAE world, we have to be practical as well /emoticons/default_wink.png' srcset='/emoticons/wink@2x.png 2x' title=';)' width='20'>
The finer we mesh the more compute resources and time it would require to get a solution.
My mesh of the car didn't have min angle>5degree. No duplicates, free edges, penetrations and fully connected but my mesh is not running in VWT. So how do I run them. Very less number of elements are less than 5 degree so it's okay if I get very small errors, it would be very small. But it won't run. So is less than 5 degree a compulsion?
It still shows mesh_intersections dat and nas files. All things are great!
What's the error here?
It still shows mesh_intersections dat and nas files. All things are great!
What's the error here?
This file has only geometry. No mesh.
I would suggest following checks:
- Connectivity
-Duplicates
- Min Angle < 5°
- Length < 0.001 (assuming the model is in meters) This check will highlight all elements less than 1mm length.
1 For surface meshing, you will want to resolve any feature on the vehicle with at least 5-10 elements. So if the feature is 100mm then use a 10mm surface element.
These checks would give you a good surface mesh.