Accession Number : ADA260332


Title :   Progress in Developing a Transition Model for High-Speed Flows


Corporate Author : DCW INDUSTRIES INC LA CANADA CA


Personal Author(s) : Wilcox, David C


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a260332.pdf


Report Date : 20 Oct 1992


Pagination or Media Count : 48


Abstract : This report summarizes research conducted during the past year whose aim is to develop and test an accurate and efficient method for describing boundary-layer development in the transition region. A low-Reynolds-number version of the Wilcox k-w model has been postulated and tested against experimental data for 10 fully turbulent boundary layers and for more than 20 transitional cases. Overall discrepancies between theory and experiment are smaller than those for simpler correlations designed for use with algebraic turbulence models. Singular perturbation analysis of the compressible viscous sublayer and defect layer has been initiated with some interesting preliminary results. Some progress has been made toward eliminating the k-w model's sensitivity to the freestream boundary condition on w.... Transition, Turbulence modeling, Hypersonics, Computational fluid dynamics.


Descriptors :   *REYNOLDS NUMBER , *TURBULENT BOUNDARY LAYER , *TURBULENT FLOW , BOUNDARY LAYER , COMPUTATIONAL FLUID DYNAMICS , DYNAMICS , EXPERIMENTAL DATA , FLUID DYNAMICS , HYPERSONIC FLOW , MODELS , PERTURBATIONS , SENSITIVITY , TEST AND EVALUATION , TRANSITIONS , TURBULENCE , VISCOUS FLOW


Subject Categories : Fluid Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE