Accession Number : ADA134941

Title :   Transition Simulation for Incompressible Boundary Layers and Heated Hydrodynamic Bodies.

Descriptive Note : Final scientific rept. 1 Nov 75-30 Sep 76,


Personal Author(s) : Wilcox,D C ; Chambers,T L

PDF Url : ADA134941

Report Date : Jul 1976

Pagination or Media Count : 58

Abstract : Incompressible boundary-layer transition has been analyzed using a second-order closure turbulence model. With no transition-specific modifications, the turbulence model predicts salient features of incompressible, zero-pressure-gradient boundary-layer transition including sensitivity to freestream turbulence and surface roughness, transition width, and transitional velocity profiles. With transition modifications based on linear stability theory, the model accurately predicts transition sensitivity to surface heat transfer, pressure gradient, and suction. With no further modifications, transition predictions have been made for several hydrodynamic bodies, including effects of surface heating. (Author)

Descriptors :   *Boundary layer transition, Mathematical prediction, Incompressibility, Hydrodynamic configurations, Surface properties, Low drag, Heat transfer, Laminar flow, Surface roughness, Suction, Pressure gradients, Sensitivity, Turbulent flow, Free stream, Water flow, Heating, Surfaces, Turbulence, Mathematical models

Subject Categories : Marine Engineering
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE