Turbulence and surface heat transfer near the stagnation point of a circular cylinder in turbulent flow
Abstract
A turbulent boundary layer flow analysis of the momentum and thermal flow fields near the forward stagnation point due to a circular cylinder in turbulent cross flow is presented. Turbulence modeling length scale, anisotropic turbulence initial profiles and boundary conditions were identified as functions of the cross flow turbulence intensity and the boundary layer flow far field velocity. These parameters were used in a numerical computational procedure to calculate the mean velocity, mean temperature, and turbulence double correlation profiles within the flow field. The effects of the cross flow turbulence on the stagnation region momentum and thermal flow fields were investigated. This analysis predicted the existing measurements of the stagnation region mean velocity and surface heat transfer rate with cross flow Reynolds number and turbulence intensity less than 250,000 and 0.05, respectively.
 Publication:

NASA STI/Recon Technical Report N
 Pub Date:
 1983
 Bibcode:
 1983STIN...8429157W
 Keywords:

 Boundary Layer Flow;
 Circular Cylinders;
 Heat Transfer;
 Iteration;
 Stagnation Point;
 Turbulent Boundary Layer;
 Boundary Conditions;
 Coordinate Transformations;
 Cross Flow;
 Finite Difference Theory;
 Flow Velocity;
 Nusselt Number;
 Reynolds Number;
 Fluid Mechanics and Heat Transfer