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oe15d033 October 10, 2020 03:16

Clarification in calculating RMS lift coefficient
 
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Dear all,

I am simulating flow past cylinder for Re = 11000 in StarCCM+, for validate the results I am finding mean drag, RMS lift coefficient, and strouhal number. My results are below

Mean Drag = 1.29 (1.15 s per Norberg(1993))

RMS lift coefficient = 0.84 (0.427 as per Norberg(1993))

Strouhal number = 0.209 ( 0.2 as per Mutlu summer)

From the above results, I am getting cd and st is almost near the reference value, but the rms lift coefficient is double the reference value. pls, suggest to me where I have to correct calculation.

Thank you.

DmG August 28, 2023 22:02

Quote:

Originally Posted by oe15d033 (Post 784936)
Dear all,

I am simulating flow past cylinder for Re = 11000 in StarCCM+, for validate the results I am finding mean drag, RMS lift coefficient, and strouhal number. My results are below

Mean Drag = 1.29 (1.15 s per Norberg(1993))

RMS lift coefficient = 0.84 (0.427 as per Norberg(1993))

Strouhal number = 0.209 ( 0.2 as per Mutlu summer)

From the above results, I am getting cd and st is almost near the reference value, but the rms lift coefficient is double the reference value. pls, suggest to me where I have to correct calculation.

Thank you.

hello friend:
do your lift coefficient get from STAR CCM+? I don't know how to do it, I will very appreciate if you tell me what I should do, thank you very much!


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