Analysis of the interaction of a supersonic gas flow with a solid low melting polymer as a ramjet engine propellant

The performance of ramjet engines with a supersonic combustion is one the main directions hypersonic aircraft development research studied. Researchers around world create special experimental facilities for testing engine models, investigate fuels and classify new scientific data. Since ambient temperature oxidizer flow in air duct are low at flight altitude aircraft, melting materials can be used as fuel agent solid propellant. purpose this work analysis heat mass exchange processes associated motion gas an axisymmetric described chamber polymer. mathematical model problem consists unsteady Reynolds-averaged Navier-Stokes equations semiempirical turbulence model. stated was solved by finite volume method. Initial boundary conditions identical to makes it possible verify results numerical solution directly during aerodynamic tests. Gas dynamic parameters described, pressure profiles gas-solid interface plotted, transient behavior considered. coupled transfer allow analyzing pattern polymeric material (caprolone, polyethylene polyoxymethylene). It has been found that effect on surface within second leads changes depth 20% its total thickness.