UNIVERSALITY OF THE LAGRANGIAN VELOCITY STRUCTURE FUNCTION CONSTANT (C0) ACROSS DIFFERENT KINDS OF TURBULENCE |
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| Authors: | SHUMING DU |
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| Institution: | (1) College of Engineering, University of California, Riverside, CA, 92521-0425, U.S.A |
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| Abstract: | In this paper, we evaluate the Lagrangian velocity structure function constant, C0, in the inertial subrange by comparing experimental diffusion data and simulation results obtained with applicable Lagrangian stochastic models. We find in several different flows (grid turbulence, laboratory boundary-layer flow and the atmospheric surface layer under neutral stratification) the value for C0 is 3.0 ± 0.5. We also identify the reasons responsible for earlier studies having not reached the present result. |
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| Keywords: | Turbulent dispersion Lagrangian stochastic models Lagrangian velocity Structure function constant Inertial subrange |
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