A kinetic model of the final-stage decay of grid-produced turbulence is presented. Theoretical analysis leads to an inverse-square energy decay law. The prediction has been confirmed by measurements in a low-speed water channel. A replot of the Dryden-Schubauer and Batchelor-Townsend wind-tunnel data also indicates better agreement with the present inverse-square, rather than the52-power decay law proposed by earlier investigators.
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Huanshu Tan (1963) studied this question.
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