Experiments have shown that the transition from laminar to turbulent conditions for flow normal to the axis

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Experiments have shown that the transition from laminar to turbulent conditions for flow normal to the axis of a long cylinder occurs at a critical Reynolds number of ReD,c  2 X 105, where D is the cylinder diameter. Moreover, the transition from incompressible to compressible flow occurs at a critical Mach number of Mac ≈ 0.3. For air at a pressure of p = 1 atm and temperature T = 27°C, determine the critical cylinder diameter Dc below which, if the flow is turbulent, compressibility effects are likely to be important.

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Fundamentals Of Heat And Mass Transfer

ISBN: 9780470501979

7th Edition

Authors: Theodore L. Bergman, Adrienne S. Lavine, Frank P. Incropera, David P. DeWitt

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