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Confused May 6, 2004 04:00

Pulsations in a twin duct
 
Dear All,

I am calculating the flow from a fan that distributes air to two ducts. I had some convergence problems or strange residuals. I have therefore calculated the flow as transient now. I can see that there are some large variation in the mass flow to each duct as a function of time.

Is it always like that and can it be avoided? How to determine when it will happen?

Thanks in advance


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