Tool Test-2

Tool test 2

Objective:

• Import the CAD geometry of Intake Manifold.
• Clean up the geometry until no topological error is found.
• Mesh geometry with target/average length of 3mm with no errors.
• Assign closed volume and generate unstructured volumetric mesh using the given quality criteria.

Quality Criteria Feature:

S.NO	QUALITY CRITERIA	VALUE
1	target/average length	1
2	Minimum length	3
3	Maximum length	7
4	Test collapse	0.2

Procedure:

The engine intake manifold is imported modal file

1. Model of intake manifold:

1. Geometry cleanup:

• A topo operation is performed on the model to view the attached edges.
• The model is oriented in such a way that outer surface is grey in colour and inner surfaces are yellow in colour.
• The model is checked for its geometrical errors.
• The errors such as single, triple cons are fixed using auto-fix option.
• After clearing all the errors geometry check was rerun to confirm whether all the errors are corrected.

3. Shell mesh:

• All the construction lines are rearranged in order to capture the features perfectly and to get a good flow of mesh.
• All the outer surfaces are meshed using trias.
• The curved regions and circular regions are meshed using otho tria elements for perfect capturing of the feature.
• The quality checks are done and minimize the errors.
• Some of the regions, the errors are compromised for better feature capturing.

4. Volume mesh:

• The first step is to define the volume.
• It can be done using define option under volume module button in v.mesh module.
• Using tetra fem the volume is meshed.
• The quality check is done for checking collapse errors.
• The tet collapse errors are fixed by using move grids and fix quality options.
• The quality check run to check any quality errors in volume mesh.
• Then, check for kinks or dips on the surface.
• These errors are fixed by using move grids option.

Results:

• Performed geometry clean up.
• Performed tetra meshing with acceptable quality.

Learning Outcomes:

• To fix the geometrical errors for given model.
• Volume defining and meshing.
• Learnt to mesh solid components using tetra mesh.
• Able to mesh the given model by satisfying the quality criteria.

Conclusion:

The intake manifold is volume meshed using ansa with satisfying the quality conditions.

Note:

The time taken as this modal is approximately 4hrs 50mins.