Woodward-Collela 2D test problem

Test:

2D HD test: shock reflection

Introduction

This is a standard 2D shock reflection test from Woodward & Collela (JCP 54, 1984). It serves as an example on the usage of non-trivial boundary prescriptions: the bottom boundary is partly fixed, partly solid wall, the top boundary uses a time-dependent prescription for the pre- and post-shock region. It is a nice test for AMR, as more resolution will show more details in the later stages of this shock reflection problem.

How to run

Setting up the files

$AMRVAC_DIR/setup.pl -d=2

Compiling

Simply issue the make command:

make

Running the code

To run with e.g. 4 processors, use

mpirun -np 4 ./amrvac -i wc_2d.par

Changing the parameters

A complete list of parameters can be found par.md.

Changing the physics and initial conditions

Have a look at the local file mod_usr.t. You can modify the initial conditions easily, try setting up shocks of different Mach number (and change the boundary prescription accordingly). Verify how different schemes and resolutions perform on this test. The extra variable in output is a Schlieren plot of the density (gradient).