Does SU2 implement any non-reflecting boundary condition?
Dear all,
Does SU2 implement any non-reflecting boundary condition? I'm currently trying to simulate the flow around a wall-mounted wing. The wind tunnel extends six chord lengths downstream of the airfoil. The idea is to replicate the experiment of Chow et al. [1] using SU2 RANS simulations. The domain geometry can be seen in the NASA turbulence model resource webpage [2]. One problem I encountered was the outflow boundary condition imposition. As observed by other authors [3], if a constant pressure boundary condition is imposed at the outflow, problems arise. This because, as said by Churchfield et al. in [3]: "a vortex has low pressure within its core, and the wingtip vortex being generated in this flow is convected downstream and out of the domain, problems arise when using a constant pressure outflow boundary. With the turbulence models that predict a less diffuse vortex, the vortex encounters a large adverse pressure gradient as it approaches the boundary, causing it to periodically burst, which does not allow for a steady-state solution." Since I only have found a constant pressure outflow condition on the SU2 documentation, I would like to ask if there is any other boundary condition already implemented which can deal with this type of flow. [1] https://arc.aiaa.org/doi/10.2514/2.1 [2] https://turbmodels.larc.nasa.gov/Oth...p0012_exp.html [3] https://arc.aiaa.org/doi/abs/10.2514...rnalCode=aiaaj |
Yes, for compressible flows the Riemann boundary conditions are implemented and also Giles' boundary condition.
A tutorial for Riemann is here: https://su2code.github.io/tutorials/NICFD_nozzle/ Unfortunately these implementations are not well covered in the documentation. |
Quote:
Thank you very much for the answer. If one is interested I've found the two papers where they implement these boundary conditions. Riemann BC -> [1] page: 5-6 Giles BC -> [2] chapter: 3 [1] https://arc.aiaa.org/doi/10.2514/6.2015-2760 [2] https://repository.tudelft.nl/islandora/object/uuid:10797924-e37c-4328-a53a-55c5fdc464c3/datastream/OBJ/download |
Quote:
Thank you and regards, Jyoti |
All times are GMT -4. The time now is 09:55. |