Accession Number : AD0669694

Title :   NATURAL CONVECTION FROM HORIZONTAL RECTANGULAR CYLINDERS OF VARIOUS ASPECT RATIOS.

Descriptive Note : Technical rept.,

Corporate Author : CATHOLIC UNIV OF AMERICA WASHINGTON D C DEPT OF MECHANICAL ENGINEERING

Personal Author(s) : Hahn,Mahn Hee ; Didion,David A.

Report Date : 15 MAY 1968

Pagination or Media Count : 27

Abstract : An experimental investigation was conducted to determine the convective heat transfer coefficients for rectangular cylinders with various aspect ratios in air under atmospheric conditions. An empirical formula showing the correlation of the heat transfer coefficient with aspect ratio (height/half-perimeter) is obtained from the experimental data. Four models having the same perimeter were tested with aspect ratios varying from 1 : 8 to 7 : 8. The agreement between the empirical equation and experimental result for all the cases tested is within 5%. (Author)

Descriptors :   (*CONVECTION(HEAT TRANSFER), CYLINDRICAL BODIES), RECTANGULAR BODIES, HEAT TRANSFER COEFFICIENTS, ASPECT RATIO, LAMINAR FLOW, TWO DIMENSIONAL FLOW, PRANDTL NUMBER, FLAT PLATE MODELS

Subject Categories : Aerodynamics
      Fluid Mechanics
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE