We have developed a high-order finite-difference based compressible Navier-Stokes solver called HomeLES employing energy stable methods based on the SBP-SAT schemes utilizing multiblock structured curvilinear grids for complex geometries. The code also features advanced subgrid-scale turbulence models for LES and multispecies transport and finite-rate chemical kinetics for combustion. The code scales to 1000’s of cores using an MPI-based master-slave parallelization approach. A sample test case is shown below. The code als has multispecies transport and finite-rate chemical kinetics.
Laminar unsteady flow over a cylinder showing vortex shedding across multiblocks
The second code is based on a high-order order finite volume method using a hybrid central-upwind scheme with a shock sensor switch. The code currently uses structured Cartesian grids and a crude (but effective) cut-cell approach for handling geometries. Future efforts will include our novel multiblock immersed boundary method for more complex geometries. Various test cases such as supersonic flow over a corner and shock-shear layer interaction have been performed (see below). The code also features multispecies transport and finite-rate chemical kinetics and is ideally suited for supersonic reacting flows like the model scramjet simulations shown below. The code is MPI-parallel and runs very fast on large numbers of processors.
[youtube_sc url=”http://youtu.be/k_2uIsl_IMo” ratio=”4:3″ loop=”1″ rel=”0″] [youtube_sc url=”http://youtu.be/G98g3YY4JF8″ ratio=”4:3″ loop=”1″ rel=”0″] [youtube_sc url=”http://youtu.be/dZpuH6gFWnk” ratio=”4:3″ loop=”1″ rel=”0″]
Snapshot showing hydrogen contours for sonic injection of hydrogen into a supersonic air stream simulating scramjet combustion.
HO2 contours from supersonic reacting flow.