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Question Number 116079 by Study last updated on 30/Sep/20

$$provethatRe=\frac{\rho \cdot v\cdot d}{\mu }renuldsnumber$$

Answered by Olaf last updated on 01/Oct/20

$$\mathrm{It}\mathrm{suffices}\mathrm{to}\mathrm{resize}\mathrm{the}\mathrm{Navier}-\mathrm{Stokes}$$$$\mathrm{equations}.\mathrm{The}\mathrm{dimensionless}\mathrm{factor}$$$$\frac{\rho vd}{\mu }\mathrm{appears}\mathrm{naturally}.\mathrm{This}\mathrm{is}\mathrm{the}$$$$\mathrm{factor}\mathrm{called}\mathrm{Reynolds}\mathrm{number}.$$

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