Tool Test-2

      TOOL TEST 2

VOLUME MESH GENERATION FOR INTAKE MANIFOLD USING ANSA.

OBJECTIVE 

• Import the CAD geometry of intake manifold 
• Clean up the geometry until no topological error is found
• Mesh geometry with target average length with no errors
• Assign closed volume and generate unstructed volumetric mesh using the given quality criteria

S.No	Quality Criteria	Value
1	Target/Average length	3
2	Minimum Length	1
3	Maximum Length	5

      

Use tetra elements to mesh the Volumes defined in the model and check for the below quality after Volume meshing.

S.No	Quality Criteria	Value
1	Tet collapse	0.2

       

ABSTRACT

In this tool test going to generate volume mesh for intake manifold using tools in ANSA .There is no need to generate any midsurface for this geometry .The given geometry must be meshed on the surface and then the model should be assigned as a closed volume to generate unstructuted volumetric mesh.Also we need to remove tetcollapses after generating volume mesh

           

METHODOLOGY

• Import the CAD geometry and do geometry clean up with no topological error
• Assign the property ID
• Set up quality criteria and generate mesh
• Assign closed volume for the given geometry
• Generate volumetric unstructed mesh

PRODECURE

GEOMETRY CLEAN UP

• After importing the geometry into ANSA there will be many topological errors .In order to prevent this we do a geometry clean up which is in the checks manager.

 

ASSIGN PROPERTY ID PID

Every part in the geometry has its own property .We can assign PID using Ansa .We have to select the part and click apply  then we have to select the whole part using window slection to apply the PID

                    

MESHING AND IMPROVEMENT OF THE MESH

• After assigning all the quality criteria and mesh parameters one has to do meshing for geometry
• Meshing should be done at smaller regions in the beginning and continue on to the falt areas  so that kinks and raised edges can be avoided
• Use ortho tria mesh for the model which is ever mesh gives better result continue that mesh in that required region

 

           

GENERATING VOLUME MESH

• Volume mesh can be created in ANSA only if it recognises the geometry as a closed volume.Therefore we must manually update our model to closed volume
• To convert our model to closed volume one must define volume.

• After the completion of volume mesh tria elements  45716
• Tetra elements  99036
• There are no tetcollapses  kinks  raised edges.

OUTCOME

• Able to do topological clean up with nor error
• Aware of all the quality criteria and quality parameters during mesh generation  understood about mesh generation and implemented mesh generation for complete geometry
• Learned how to define closed volume and use of volumetric mesh.

CONCLUSION

Solid meshing is successfully generated for intake manifold using the given quality criteria mentioned under the test .There are no raised edges  kinks  and tetcollapses .