Turbulence modeling methods for the compressible Navier-Stokes equationsTurbulence modeling methods for the compressible Navier-Stokes equations, including several zero- and two-equation eddy-viscosity models, are described and applied. Advantages and disadvantages of the models are discussed with respect to mathematical simplicity, conformity with physical theory, and numerical compatibility with methods. A new two-equation model is introduced which shows advantages over other two-equation models with regard to numerical compatibility and the ability to predict low-Reynolds-number transitional phenomena. Calculations of various transonic airfoil flows are compared with experimental results. A new implicit upwind-differencing method is used which enhances numerical stability and accuracy, and leads to rapidly convergent steady-state solutions.
Document ID
19830055974
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Coakley, T. J. (NASA Ames Research Center Moffett Field, CA, United States)