[Seroduso]

I'm a student and my thesis topic includes a CFD simulation of a radial turbine with Star CCM+. I am running a three dimensional implicit unsteady simulation with k-omega turbulence, coupled flow and ideal gas. The turbine should have a specific rotation rate as the goal, which i put into the simulation as a rigid body motion for the impeller region. How do I verfiy the design? Is it via the pressure drop between input and ouput? Is there another way?

[Peresvet]

Originally Posted by Seroduso

I'm a student and my thesis topic includes a CFD simulation of a radial turbine with Star CCM+. I am running a three dimensional implicit unsteady simulation with k-omega turbulence, coupled flow and ideal gas. The turbine should have a specific rotation rate as the goal, which i put into the simulation as a rigid body motion for the impeller region. How do I verfiy the design? Is it via the pressure drop between input and ouput? Is there another way?

Good day. If you have a powerful PC, then it is better to use an overset grid. In my example, you need to solve the inverse problem, and use pressure filling instead of air speed. Delov then!!!

https://youtu.be/xDyWPHa41KE

[Seroduso]

Hello Peresvet,
thank you for the tip. I am going to implement the overset mesh for the impeller.
What do you mean by the inverse problem? Have a monitor of the pressure difference between input and output? And what does "delov" mean?

[Peresvet]

Originally Posted by Seroduso

Hello Peresvet,
thank you for the tip. I am going to implement the overset mesh for the impeller.
What do you mean by the inverse problem? Have a monitor of the pressure difference between input and output? And what does "delov" mean?

Hello.
Delov! A proverb in Russian means, simply, easily, without problems.
In my example, this is a wind generator turbine and it is spun by the air flow at the inlet. In your case, I assume, the turbine has already been given a rotation speed and all that remains is to determine the pressure.
To control the pressure in a given section or on the surface of a turbine, etc., you need to create a new scalar scene and select the field function in it > select the appropriate one from the list.