Accession Number:

AD0420095

Title:

LAMINAR FREE CONVECTION FROM A HORIZONTAL CYLINDER WITH PRESCRIBED SURFACE HEAT FLUX,

Descriptive Note:

Corporate Author:

BOEING SCIENTIFIC RESEARCH LABS SEATTLE WASH

Personal Author(s):

Report Date:

1963-08-01

Pagination or Media Count:

27.0

Abstract:

Laminar free convection from a horizontal cylinder having a prescribed surface heat flux is analysed. The wall surface heat flux is assumed to be varied in the manner of a sub 1 XR square a sub 2 XR square. Special transformations are devised and employed so that the resulting differential equations and boundary conditions are free of the parameters a sub 1 and a sub 2. These differential equations are solved once and for all solutions to the original equations for any particular values of a sub 1 and a sub 2 may then be obtained easily as linear combinations of the numerical solutions. It is found that the average Nusselt number for a cylinder having a uniform surface heat flux is larger than that for a cylinder having an isothermal surface by no more than 4 per cent. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE