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ArslanOZCAN December 3, 2013 09:05

Reference diameter

In CFD-Post i am doing a Hydraulic Francis turbine analysis. Everything seems ok except the parameters in result report. The reference diameter is bigger than runner outlet diameter and torque value is higher than expected. Efficiency is also lower than expected. How i can set reference diameter manually and which formulas does CFD_Post uses to calculate result parameters. I couldn't find in tutorial files.

I have checked all the contours, streamlines and blade angles, everything seems normal.


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