Comparison of multiequation turbulence models for several shock-separated boundary-layer interaction flows
Abstract
Several multiequation eddy viscosity models of turbulence are used with the Navier-Stokes equations to compute three classes of experimentally documented shock-separated turbulent boundary-layer flows. The types of flow studied are: (1) a normal shock at transonic speeds in both a circular duct and a two-dimensional channel; (2) an incident oblique shock at supersonic speeds on a flat surface; and (3) a two-dimensional compression corner at supersonic speeds. Established zero-equation (algebraic), one-equation (kinetic energy), and two-equation (kinetic energy plus length scale) turbulence models are each utilized to describe the Reynolds shear stress for the three classes of flows. These models are assessed by comparing the calculated values of skin friction, wall pressure distribution, velocity, Mach number, and turbulent kinetic energy profiles with experimental measurements. Of the models tested the two-equation model results gave the best overall agreement with the data.
- Publication:
-
11th Fluid and Plasma Dynamics Conference
- Pub Date:
- July 1978
- Bibcode:
- 1978fpdy.conf.....V
- Keywords:
-
- Boundary Layer Equations;
- Boundary Layer Separation;
- Eddy Viscosity;
- Navier-Stokes Equation;
- Shock Wave Interaction;
- Turbulence Models;
- Turbulent Boundary Layer;
- Axisymmetric Flow;
- Channel Flow;
- Corner Flow;
- Ducted Flow;
- Flat Surfaces;
- Kinetic Energy;
- Mach Number;
- Normal Shock Waves;
- Oblique Shock Waves;
- Pressure Distribution;
- Reynolds Number;
- Reynolds Stress;
- Skin Friction;
- Supersonic Flow;
- Transonic Flow;
- Velocity Distribution;
- Fluid Mechanics and Heat Transfer