88 research outputs found

    Universal dissipation scaling for non-equilibrium turbulence

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    It is experimentally shown that the non-classical high Reynolds number energy dissipation behaviour, Cϵ≡ϵL/u3=f(ReM)/ReLC_{\epsilon} \equiv \epsilon L/u^3 = f(Re_M)/Re_L, observed during the decay of fractal square grid-generated turbulence is also manifested in decaying turbulence originating from various regular grids. For sufficiently high values of the global Reynolds numbers ReMRe_M, f(ReM)∼ReMf(Re_M)\sim Re_M.Comment: 5 pages, 6 figure
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