Calculation of a turbulent boundary layer downstream of a step change in surface temperature
Abstract
The paper examines how the computer programs of Bradshaw and Unsworth (1974) and of Patankar and Spalding (1970) behave for the calculation of mean temperature profiles and heat flux fields downstream of a step change in the surface temperature. The PatankarSpalding program used incorporates a different model for the shear stress and heat flux from that used originally. The experimental work used to test the computations refers to Blom (1970), Fulachier (1972), and Perry and Hoffmann (1976). Calculated heat flux distributions show that the internal thermal layer is only likely to reach selfpreserving conditions when the distance from the step exceeds 40 times the boundary layer thickness at the step.
 Publication:

ASME Journal of Heat Transfer
 Pub Date:
 February 1979
 Bibcode:
 1979ATJHT.101..144B
 Keywords:

 Boundary Layer Equations;
 Heat Flux;
 Surface Temperature;
 Turbulent Boundary Layer;
 Step Functions;
 Thermal Boundary Layer;
 Thermodynamics;
 Fluid Mechanics and Heat Transfer