at a velocity v1, is given by 
. Since at velocity v1 the flow starts to become turbulent, this is the Reynold's number corresponding to turbulent flow. For the other fluid the flow must become turbulent at the same Reynold's number. So we have,
Saturday, September 12, 2009
Irodov Problem 1.337
The Reynold's number for a sphere of radius r1 falling through a fluid of density 
at a velocity v1, is given by 
. Since at velocity v1 the flow starts to become turbulent, this is the Reynold's number corresponding to turbulent flow. For the other fluid the flow must become turbulent at the same Reynold's number. So we have,
at a velocity v1, is given by . Since at velocity v1 the flow starts to become turbulent, this is the Reynold's number corresponding to turbulent flow. For the other fluid the flow must become turbulent at the same Reynold's number. So we have,
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