Presentation of a computational code for 3-D compressible flow in complex channels and cavities

A computation code named MATHILDA was developed at ONERA to study mass and energy transfer through internal cooling systems composed of complex shaped channels and cavities in which the flow is controlled by the interaction between inertial forces and irreversible phenomena. This code integrates the 3D time dependent Navier-Stokes equations, along with some additional transfer equations. The fluid is compressible, and flow may vary from low subsonic to supersonic. The turbulence model can be either a two-equation model or an algebraic model.