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-   -   Simulation of Water Turbine with CFX (https://www.cfd-online.com/Forums/cfx/139416-simulation-water-turbine-cfx.html)

hydroturbines July 23, 2014 15:58

Simulation of Water Turbine with CFX
 
Hello everyone,

I am working on simulation of a water turbine with CFX.
This is my first work in CFD.
Type of turbine: Francis (radial runner).

I have all the measured data in real turbine (net head, flow and output power).

My doubt is:
What are the best boundary conditions for inlet and outlet ?

Example:
Inlet Conditions: flow
Outlet Conditions: pressure

or
Inlet Conditions: pressure
Outlet Conditions: pressure

I do not know with is the boundary conditions that ensures better results in simulation for efficiency and cavitation.

Please, help me, every reply would be appreciated.

Thank you very much.


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