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-   -   What will Reynold Number affect the fluid? (http://www.cfd-online.com/Forums/main/94324-what-will-reynold-number-affect-fluid.html)

warlocklw November 11, 2011 22:26

What will Reynold Number affect the fluid?
 
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?

truffaldino November 12, 2011 07:13

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.

aero_suresh November 25, 2011 22:44

Quote:

Originally Posted by warlocklw (Post 331782)
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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