ESI Group CFD Portal - Supersonic Flow Over a Blunt Body with Chemical Reaction

The problem to be simulated is inviscid, supersonic flow of air past a blunt body. The numerical model employs only one half of the body due to the symmetry of the flow pattern. The flow has a free-stream Mach number, M_∞, of 23.5. Due to high free stream Mach number, the flow develops high temperatures which initiates chemical reactions between the various components of air. These reactions include 1) dissociation of diatomic Oxygen 2) dissociation of diatomic Nitrogen, 3) dissociation of nitrous Oxide 4) reaction of diatomic Nitrogen with oxygen and 5) reaction of Nitrous Oxide with Oxygen.

Details

This tutorial covers the following subjects:

Setting a model name and title for the problem.
Reading a single domain, DTF grid, and building a CFD-FASTRAN model.
Setting fluid properties such as density and molecular weight.
Activating and setting mixture properties.
Setting chemical reactions parameters.
Setting initial values for the flow field.
Setting boundary conditions appropriate for supersonic chemically reacting flow problem.
Setting solution iterations and cycles.
Choosing a suitable time-integration scheme and setting CFL numbers.
Requesting output to be post-processed with CFD-VIEW.

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