ICS FLUID FLOW

= mass density (gcm-3, kgm-3, slug/ft-3 or lbm/ft-3 ) D = weight density (e.g. N/m3, etc.) Re is dimensionless and 2000 for laminar flows but > 4000 for turbulent flows. 2000 is called the lower critical velocity and 4000 is called the upper critical velocity. 2000 < Re > 4000 is a zone of transition between laminar and turbulent flow. ................
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