# How to set "Far field boundary condition"

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 June 21, 2006, 03:26 How to set "Far field boundary condition" #1 erick Guest   Posts: n/a Sponsored Links Dear Friends, In my simulation, compressible fluid jets from a nozzle(outlet) into atmosphere, at inlet of the nozzle, the pressure, temperature and velocity is known. How to set the boundary condition at outlet? Maybe set "average static pressure"=0 at outlet is not good. Could you help me? Many thanks. Eric.

 June 21, 2006, 07:28 Re: How to set "Far field boundary condition" #2 Joe Guest   Posts: n/a Depends on any intermediate geometry between the nozzle outlet and the farfield. Either a outlet or opening type BC could be appropriate...

 June 21, 2006, 07:33 Re: How to set "Far field boundary condition" #3 erick Guest   Posts: n/a Dear Mr. Joe, Could you explain it in detail? It is really important to me, Many thanks Eric

 June 21, 2006, 11:06 Re: How to set "Far field boundary condition" #4 Joe Guest   Posts: n/a Post pics of your geometry of interest.

 June 21, 2006, 13:08 Re: How to set "Far field boundary condition" #5 Robin Guest   Posts: n/a Hi Erick, At the opposite end, a constant static pressure outlet would suffice. On the top or sides, use an opening with static pressure and no direction. These should also be sufficiently far away from your jet. Regards, Robin

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