Accession Number : AD0622151

Title :   A SIMPLIFIED APPROACH TO THE INFLUENCE OF GORTLER-TYPE VORTICES ON THE HEAT TRANSFER FROM A WALL.

Descriptive Note : Technical rept.,

Corporate Author : NORGES TEKNISKE HOEGSKOLE TRONDHEIM INSTITUTT FOR MEKANIKK

Personal Author(s) : Persen,Leif N.

Report Date : MAY 1965

Pagination or Media Count : 70

Abstract : A restricted exploratory investigation was made to examine the plausibility of finding that Gortler-type vortices may explain the increased heat transfer found in many instances in which conventional explanations have failed. Because of the complexity of the analytical setting, the current treatment was put within reach of solution by restriction of the Prandtl number to high and low values, so that the energy and momentum equations may be decoupled. It is indeed found that these vortices effect increases in heat transfer and that a part of the mechanism is a tendency of the vortices to slow down the velocity in the fluid at an increased rate (as compared with the case without these vortices) in the region where they bring the fluid away from the wall and to increase it where the fluid is brought down. (Author)

Descriptors :   (*HEAT TRANSFER, LAMINAR BOUNDARY LAYER), (*VORTICES, HEAT TRANSFER), TURBULENCE, VELOCITY, SHEAR STRESSES, PARTIAL DIFFERENTIAL EQUATIONS

Distribution Statement : APPROVED FOR PUBLIC RELEASE