I just discovered this channel, and this channel is a gold mine to learn about CFD. I am a mechanical engineering student and want to leanr even more about CFD. I want to ask you a couple of questions; 1- When we are using RANS models, we are determining if the mesh quality by looking at wall y+ values. If it is '
Hey Ekin, thanks for your comment. It alway depends on what are you going to solve. 1. In the field we are working in, the boundary conditions are usually unknown and must always be assumed. So we have some big influence due to a lack of measured data. So we are usually doing a net independence study which means we mesh the volume in different sizes and look if the results change with the size of the mesh. 2. Yes, of course the pressure goes along with the velocity. And of cause they will always influence each other. In the industrial systems we analyse, it's mostly useful to try to keep vortex shedding as small as possible. The pressure distribution on the surface can also be interesting. The actual pressure drop is often something we cannot change at all. 3. You can use HyperMesh, which can be quite a hurdle to get used to but its very powerful. Hope I could help you.
Nice video! Would you be interested to model a 4 seat convertible with wind deflector behind front seats first the with deflector behind rear seats? It would be interesting to see effect on airflow zoomed in on the cabin
Exactly what i was looking for
I just discovered this channel, and this channel is a gold mine to learn about CFD. I am a mechanical engineering student and want to leanr even more about CFD. I want to ask you a couple of questions;
1- When we are using RANS models, we are determining if the mesh quality by looking at wall y+ values. If it is '
Hey Ekin, thanks for your comment. It alway depends on what are you going to solve.
1. In the field we are working in, the boundary conditions are usually unknown and must always be assumed. So we have some big influence due to a lack of measured data. So we are usually doing a net independence study which means we mesh the volume in different sizes and look if the results change with the size of the mesh.
2. Yes, of course the pressure goes along with the velocity. And of cause they will always influence each other. In the industrial systems we analyse, it's mostly useful to try to keep vortex shedding as small as possible. The pressure distribution on the surface can also be interesting. The actual pressure drop is often something we cannot change at all.
3. You can use HyperMesh, which can be quite a hurdle to get used to but its very powerful.
Hope I could help you.
Nice video! Would you be interested to model a 4 seat convertible with wind deflector behind front seats first the with deflector behind rear seats? It would be interesting to see effect on airflow zoomed in on the cabin