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What will Reynold Number affect the fluid?

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Old   November 11, 2011, 22:26
Default What will Reynold Number affect the fluid?
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We know the more viscosity the fluid has, the less it will be deformed by outer force.
Eg. Mercury has more viscosity than blood, and blood has more viscosity than water.

However, Reynold Number is a dimensionless number. More Reynold Number will yield what effect on a fluid?
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Old   November 12, 2011, 07:13
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Reynold number is a ratio between viscous forces in your system and "inertial forces", this is what only matters in NS equation: flow with bigger momentum in the high viscousity fluid has same effect as flow with smaller momentum in a low viscousity system.
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Old   November 25, 2011, 22:44
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Quote:
Originally Posted by warlocklw View Post
We know the more viscosity the fluid has, the less it will be deformed by outer force.
Eg. Mercury has more viscosity than blood, and blood has more viscosity than water.

However, Reynold Number is a dimensionless number. More Reynold Number will yield what effect on a fluid?
As Re increases, it means that the Inertial force effects/influence is more for a particular type of fluid medium (viscosity = constant).
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