# Pressure farfield

 Register Blogs Members List Search Today's Posts Mark Forums Read

 July 2, 2020, 08:06 Pressure farfield #1 New Member   RaviTeja Gonnabathula Join Date: Oct 2019 Posts: 10 Rep Power: 4 Hi guys, I'm running supersonic flow simulation is fluent. I'm using pressure far field boundary condition for inlet where I'm providing the details of Static Pressure Mach Number Temperature In my problem statement stagnation pressure is mentioned ... so i have to convert it into static pressure by using the below formula P_stagn = P_static (1+(gamma-1)/2 X Mach Number^2 )^(gamma/(gamma-1)) P_stagn= 296000 Pa Mach number = 2.18 gamma = 1.4 I calculated static pressure by using the above values and then the static pressure is 28562.51569 Pa Am I in the right way in calculations? I got the doubt because my solution is not getting appropriate results, I thought it might be issue with calculation.. Pls help me

 July 2, 2020, 10:52 #2 Senior Member   Join Date: Jul 2009 Posts: 324 Rep Power: 17 Given those values your static pressure is correct.

 July 2, 2020, 12:30 #3 New Member   RaviTeja Gonnabathula Join Date: Oct 2019 Posts: 10 Rep Power: 4 Thank you.. what could be the solution

 July 2, 2020, 12:49 #4 Senior Member   Join Date: Jul 2009 Posts: 324 Rep Power: 17 The solution for what? You haven't really provided enough information for anyone to understand your problem.

July 2, 2020, 23:54
#5
New Member

RaviTeja Gonnabathula
Join Date: Oct 2019
Posts: 10
Rep Power: 4
Quote:
 Originally Posted by agd The solution for what? You haven't really provided enough information for anyone to understand your problem.
I'm getting divergence in the solution
Mesh statistics:
Orthogonal quality : 0.99652 (avg )
Skewness : 4.548e-2

 November 14, 2020, 17:31 #6 Senior Member   Kira Join Date: Nov 2020 Location: Canada Posts: 437 Rep Power: 6 Hello RaviTeja, Are you running your simulation in single or double precision? Also, what is the timestep you are using for your simulation?

 Tags boundary condition, fluent, freestream pressure, pressure farfield