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Scaling variables work when the flow is fully turbulent and exact geometric similarity is maintained. When these two conditions are true, the effect of fluid viscosity is negligible. The flow field can be made dimensionless using a characteristic length scale and a characteristic velocity scale. Once fully developed turbulence is satisfied, dimensionless velocities scale exactly with the characteristic velocity. ÇëÎÊÈçºÎÀí½â»ò·ÒëÕâ¶Î»° [ Last edited by laiyb on 2008-9-18 at 16:39 ] |
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