u/UnknowledgableTwin

Hello, i am having a bit of trouble on how to launch a CFD simulation in COMSOL Multiphysics 6.4 .

I made this geometry using MATLAB and exported it as an STL file. Passing it through MeshLab to clean it up and used quadratic edge collapse to reduce the number of faces.

I am a complete newbie to COMSOL. I tried following a youtube tutorial about particle tracing in simulating a laminar static particle mixer (Here's the link for those interested : https://www.youtube.com/watch?v=UmxOT16Ch1A).

I tried recreating the steps using my geometry, but everytime I try meshing I get the following error.

COMSOL Multiphysics 6.4 Mesh building error

I tried to make a cylinder that wraps around the geometry directly in the STL file and importing it at once, but i cannot select them separately (In order to set the cylinder as the walls where the fluid domain should be).

I would be very appreciative of any guidance or suggestions as to how I should approach such problem.

Hello, i am having a bit of trouble on how to launch a CFD simulation in COMSOL Multiphysics 6.4 .

I made this geometry using MATLAB and exported it as an STL file. Passing it through MeshLab to clean it up and used quadratic edge collapse to reduce the number of faces.

I am a complete newbie to COMSOL. I tried following a youtube tutorial about particle tracing in simulating a laminar static particle mixer (Here's the link for those interested : https://www.youtube.com/watch?v=UmxOT16Ch1A).

I tried recreating the steps using my geometry, but everytime I try meshing I get the following error.

COMSOL Multiphysics 6.4 Error

I tried to make a cylinder that wraps around the geometry directly in the STL file and importing it at once, but i cannot select them separately (In order to set the cylinder as the walls where the fluid domain should be).

I would be very appreciative of any guidance or suggestions as to how I should approach such problem.