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-   -   Variable input with respect to time (http://www.cfd-online.com/Forums/cfx/21581-variable-input-respect-time.html)

Prafull Gandhi September 2, 2005 13:10

Variable input with respect to time
 
Hi How can we specify inlet as function of time in cfx5.7.


Rui September 2, 2005 13:36

Re: Variable input with respect to time
 
Hi,

What do you want, more precisely, to specify as function of time? The inlet velocity?

The variable for time in CFX is [b]t[b].You main specify the inlet velocity Uin, for example, as Uin = 5 [m s^-1] + 2 [m s^-1]*sin(2*pi*t/4 [s]). 4 [s] would be the period of the sin function.

Regards,

Rui

Fengwei September 4, 2005 08:36

Re: Variable input with respect to time
 
if a pulsation function is needed, the function of "step" may be used.


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