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Turbulence: Inertial Subrange Question

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Old   July 2, 2020, 07:01
Default Turbulence: Inertial Subrange Question
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hi all,

i'm performing an analysis with my simulation.
i want to determine the inertial subrange in my domain.

the lower boundary is calculated by:
l_DI = 60 * eta = 60 * (kinematicViscosity^3 / epsilon)^0.25

the upper boundary is calculated by:
l_EI = 1/6 * k^(3/2) / epsilon

source: http://www.bakker.org/dartmouth06/engs150/09-kolm.pdf
also same equations can be found in
Andersson et al., Computational Fluid Dynamics for Engineers

however, when i output the result my lower boundary is always higher than my upper boundary, which can't be correct, bc per definition it should be vice versa.

does anybody know whats wrong here?

king regards
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