|
[Sponsors] |
Creating Custom Upwind Schemes for Compressible Flows |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
October 10, 2015, 13:04 |
Creating Custom Upwind Schemes for Compressible Flows
|
#1 |
New Member
Danny
Join Date: Feb 2015
Posts: 13
Rep Power: 11 |
Hello all,
I am trying to model supersonic flow over a cylindrical base using the density based solver with the DES turbulence model. For LES and hybrid LES/RANS models, the central difference (CD), bounded central difference (BCD), or some other scheme with a low amount of numerical dissipation is used to calculate the convective terms in the governing equations. For the density based solver, neither CD or BCD is offered and as a result, I do not see any turbulent structures in my domain, even when using the 3rd order MUSCL scheme. When I switched to the pressure based solver, I was able to use BCD and compute turbulent structures using the same setup as when I ran the case using the density solver. However, I would like to simulate Higher Mach number flows which would make pressure solver inappropriate. Since I am forced to use the density solver to compute this flow for higher Mach numbers, I was wondering if it was possible to use custom schemes with a low amount of dissipation to compute the convective terms using a UDF. If so, I would greatly appreciate any general advice that can help me get started. Thanks in advance. |
|
Tags |
compressible flow, des, upwind schemes |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Creating a custom objective function | viit3 | SU2 | 2 | July 3, 2013 07:22 |
Numerical schemes for free surface flows (VOF) | botp | OpenFOAM | 2 | March 11, 2011 15:27 |
Upwind Schemes in Non-Newtonian Flows | ferreira | Main CFD Forum | 1 | March 24, 2008 07:54 |
LES+initial perturbation | RajaniKumar | Main CFD Forum | 13 | December 17, 2001 14:25 |
Suitability of upwind schemes for wall bound. flow | Doru Caraeni | Main CFD Forum | 0 | November 26, 2001 03:39 |