[fluid23]

I would argue that your surface mesh is still not adequate just based on my own experience, but if you think it's a good starting point... that's good enough for me.

I will say that your tet's look far too uniform which probably means that the surface mesher is 'bottoming out' at the minimum value rather than the target value (or they are too close together). I would consider changing the range such that it clusters small cells in areas with high surface curvature (like the leading edges of your vanes) and is looser in areas with little to no surface curvature (like the big flat disk). The size you have on the flat parts looks good, but the detailed surfaces need further refinement.

The error you are getting is telling you that you need to repair some surfaces. If aren't using automatic surface repair, use it. If you are, then manual repair or CAD modifications may be required. I can't say for sure with out looking at your model. There are ways to view these errors in the surface repair tool. I suggest familiarizing yourself with it.

As for the recommended meshing approach, at least for me... what I like to do is use geometry > operations to get the surface mesh customized. Then I create regions followed by mesh and physics continua, assign values for mesh/boundary conditions in the regions then execute the volume mesher. However, both of the methods you list are fine. You just don't have a proper surface mesh to start from.

I would be happy to glance at your model. I will send you my email in a private message.

[ksyyy]

Turbochargers rely on the kinetic energy of an engine’s exhaust gases to spin its centrifugal compressor. The compressed air is then let into intake manifold where it is mixed with fuel, creating a rich fuel/air mixture, before entering the engine. Because turbochargers rely on exhaust gases it doesn’t put any mechanical load/stress on the engine like superchargers do.
A turbocharger’s reliance on exhaust gases makes it efficient, since exhaust gases are otherwise released into the environment. Due to advances in material technology, many car and engine manufacturers have adopted turbochargers because of the efficiency that comes with it.

read more: turbochargers and superchargers

[donfrulli]

Hi all,

I didn't want to start a new topic because I saw this one here and this I think would be a good topic to further explore but first... I would like to ask anyone of you, where can I find some tutorials in connection with flow analysis. My job will be to work with turbochargers using PIV and I would like to simulate the results I will get there.
I've done quite a few things before with Star, but it was only stationary project - e.g. heating up an exhaust pipe and I was interested in temperature changes in its neighborhood.
So basically I would like to validate PIV with simulating it on a computer - or let's say, vice versa.