Incompressible Navier-Stokes solver result problem
Dear all, I am trying to solve an edge tone configuration related problem. I am using the Incompressible Navier.Stokes Solver to calculate the effects of blowing a jet flow, that impinges a wedge-shaped object. My problems are, that there seems to be an insufficient amount of outflow at the outlet ("u" velocity doesn't change), as if the airflow got stuck and that the errors shown after the calculation is complete are very high. Changing the time step or the number of modes did not decrease these errors considerably. Following the link you can see the used xml file (inc.xml). I attached a picture about the resulting "u" velocity and the geo+mesh. https://drive.google.com/open?id=1PYMXzPJo26wcIEns4OA71oI1lwWMCoYH I am only simulating half of the the problem. (hence the symmetry axis). I think there should be a much greater change in the "u" velocity overall. I double checked my boundary conditions. Please give me your opinion. Best regards, Csaba Biró
Hi Csaba, We have all been rather caught up with the end of the academic year and coordinating ICOSAHOM 2018. Did this question get resolved? Cheers, Spencer. On 5 May 2018, at 19:42, Csaba Biró <archimonde01@gmail.com<mailto:archimonde01@gmail.com>> wrote: Dear all, I am trying to solve an edge tone configuration related problem. I am using the Incompressible Navier.Stokes Solver to calculate the effects of blowing a jet flow, that impinges a wedge-shaped object. My problems are, that there seems to be an insufficient amount of outflow at the outlet ("u" velocity doesn't change), as if the airflow got stuck and that the errors shown after the calculation is complete are very high. Changing the time step or the number of modes did not decrease these errors considerably. Following the link you can see the used xml file (inc.xml). I attached a picture about the resulting "u" velocity and the geo+mesh. https://drive.google.com/open?id=1PYMXzPJo26wcIEns4OA71oI1lwWMCoYH I am only simulating half of the the problem. (hence the symmetry axis). I think there should be a much greater change in the "u" velocity overall. I double checked my boundary conditions. Please give me your opinion. Best regards, Csaba Biró <Result_u_component.png><Regions_geometry_mesh.png>_______________________________________________ Nektar-users mailing list Nektar-users@imperial.ac.uk<mailto:Nektar-users@imperial.ac.uk> https://mailman.ic.ac.uk/mailman/listinfo/nektar-users Spencer Sherwin FREng, FRAeS Head, Aerodynamics, Director of Research Computing Service, Professor of Computational Fluid Mechanics, Department of Aeronautics, s.sherwin@imperial.ac.uk<mailto:s.sherwin@imperial.ac.uk> South Kensington Campus, Phone: +44 (0)20 7594 5052 Imperial College London, Fax: +44 (0)20 7594 1974 London, SW7 2AZ, UK http://www.imperial.ac.uk/people/s.sherwin/
participants (2)
- 
                
                Csaba Biró
- 
                
                Sherwin, Spencer J