Navier-Stokes cascade analysis with a stiff k-epsilon turbulence solverThe two dimensional, compressible, thin layer Navier-Stokes equations with the Baldwin-Lomax turbulence model and the kinetic energy-energy dissipation (k-epsilon) model are solved numerically to simulate the flow through a cascade. The governing equations are solved for the entire flow domain, without the boundary layer assumptions. The stiffness of the k-epsilon equations is discussed. A semi-implicit, Runge-Kutta, time-marching scheme is developed to solve the k-epsilon equations. The impact of the k-epsilon solver on the explicit Runge-Kutta Navier-Stokes solver is discussed. Numerical solutions are presented for two dimensional turbulent flow over a flat plate and a double circular arc cascade and compared with experimental data.
Document ID
19880035217
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Liu, Jong-Shang (NASA Lewis Research Center Cleveland, OH, United States)
Sockol, Peter M. (NASA Lewis Research Center Cleveland, OH, United States)
Prahl, Joseph M. (Case Western Reserve University Cleveland, OH, United States)