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Does Turbulence kinetic energy change by the hydraulic diameter at constant Re ?

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Old   December 12, 2021, 10:03
Question Does Turbulence kinetic energy change by the hydraulic diameter at constant Re ?
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Emre
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Hello, i study on a constant re=100.000, and my two model has a wide difference on TKE. M1 has 1m hydraulic diameter while M2 model has 0.2m. At constant RE for both of them. Waiting for your helps. Thank you.
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Old   December 13, 2021, 03:07
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Indeed turbulent kinetic energy is a dimensional quantity. Your velocity and length scale are different for both cases so of course the tke will change correspondingly.

The typical normalization for tke is scaling it by the velocity scale, which gives you turbulence intensity.
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