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-   -   Inlet Velocity Boundry condition (http://www.cfd-online.com/Forums/fluent/77655-inlet-velocity-boundry-condition.html)

rohangulavani June 29, 2010 23:50

Inlet Velocity Boundry condition
 
Hello everybody,
I am doing one turbulent flow simulation in fluent. But I could not understand how to decide value of K and epsilon, or "intensity and length scale", or "viscosty ratio"???:confused::confused::confused:

mamad60 June 30, 2010 02:26

Re
 
IF you know Turbulent intensity at Inlet you can choose intensity and hydraulic diameter .it's the best choise
else leave the default values unchanged

bob12 June 30, 2010 03:10

for idraulic diameter you consider this equation

De = 4 A / P

where A is area and P is perimeter; in effect if you have a cylinder the hydraulic diameter is equal to diameter of cylinder


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