Numerical simulation of three-dimensional turbulent gas flows in complex nozzle systems

Three-dimensional steady gas flows in ejector nozzles that are characterized by a strong interaction between the internal and external gas flows, are considered. A mathematical flow model is formulated that is based on the Reynolds-averaged Navier–Stokes equations for a two-component equilibrium turbulent medium and a two-parameter semiempirical turbulence model. A numerical implementation of the model is described. Numerical examples are presented.