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-   -   radial turbine blade simulation with dynamic mesh 6dof(fluent) (https://www.cfd-online.com/Forums/fluent/86974-radial-turbine-blade-simulation-dynamic-mesh-6dof-fluent.html)

mamyjooooon April 7, 2011 14:28

radial turbine blade simulation with dynamic mesh 6dof(fluent)
 
help,help,help...............
Hi
i want to solve flow in a radial turbine wheel(with high RPM).
Because the flow work is done on the blades to make the blades rotating,I decided to use dynamics mesh with 6dof.
First, I'm not sure about my udf file, which is written bellow:
Quote:

#include"udf.h"

DEFINE_SDOF_PROPERTIES(stage, prop, dt, time, dtime)
{
prop[SDOF_MASS] = 0.02;
prop[SDOF_IXX] = 0.0;
prop[SDOF_IYY] = 0.0;
prop[SDOF_IZZ] = 0.00000139;
printf ("\nstage: updated 6DOF properties");
}

(z axis is the axis of rotation)
Please tell me is it coorect?
Also because of memory limitation, I devide the turbine wheel geometry in similar sections and read one of them using periodic boundaries.
can I simulate the flow in this manner?
and if it is possible, which kind of zone (Rigid Body/Stationary) is defined for periodic zones?

Thank you. Kind regards, mamadreza.


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