Week 3 Challenge : CFD meshing on Turbocharger
AIM: To perform geometrical checks, topology cleanup, surface mesh the respective PID with given target length and perform volumetric mesh for the required volumes.
PROCEDURE:
- perform the geometry checks to find the triple and single cons in the given model.
- define and delete the faces wherever applicable to eradicate single cons, by using comands such as new face and fill hole.
- check for the intersections and overlaping layers, if found any of them try to remove faces to obtain required volumes.
- after completing topo cleanup, to perform a volumetric mesh all the openings of the model should be closed.
- meshing the model with different target lengths may result in transition phase, while giving perimeters and macros length for elements in transition, we need to be extra careful and make sure there are no unmeshed area left behind before carrying volumeetric mesh.
- after surface meshing is complete, turn on volumetric meshing module and define the volumes>> auto detect on volumes for whole database to idetify all the volumes present in the model.
- there might be showing many volumes. but choose the needed to volumetric mesh and volumes in fluid might flow. delete the other volumes that are not required.
- edit the volume mesh type as "tetra CFD" as we use the meshed model to perform CFD analysis.
LEARNING OUTCOMES:
- i have learnt the way to delete overlap surfaces and intersecting layers.
- learnt to develop the surfaces by multi projecting the hot points by divinding the larger areas into small segments.
- learnt about transitioning phase and how to get good quality mesh in such areas.
- performing volumetric mesh, by defining the volumes for fluid flow and delete the unwanted volumes.
RESULTS:
obtained a volumetric meshed turbocharger model ready for CFD analysis, by eleminating all the geometrical errors and sucessfully meshed in transition areas.
attached google drive link for .ansa file, because i was not able to attach the file,
https://drive.google.com/file/d/1TQ1ZbwSE_kOHLi3MQiq_Jf19QhlKhYSC/view?usp=sharing