Accession Number : AD0634232

Title :   HEAT TRANSFER IN THE CASE OF TURBULENT MOTION OF A FLUID IN AN ANNULAR DUCT,

Corporate Author : JOHNS HOPKINS UNIV SILVER SPRING MD APPLIED PHYSICS LAB

Personal Author(s) : Isachenko, V. P. ; Galin,N. M.

Report Date : 19 MAY 1966

Pagination or Media Count : 14

Abstract : The applicability of formulas for the calculation of heat transfer in circular ducts to non-circular ducts is discussed. The resultant deviation of the heat transfer coefficient, in some instances considerable, are probably due to the effect of the diameter ratio, which takes the variations of temperature and velocity fields in annular ducts into account. To clarify this problem, the average heat transfer in a smooth straight annular duct was investigated for a water flow with water as the secondary heat transfer medium. The results showed that the accuracy of calculations can be improved considerably by applying a correction factor. (Author)

Descriptors :   (*HEAT TRANSFER, *DUCTS), (*FLUID FLOW, DUCTS), TURBULENCE, THERMAL RADIATION, HYDRAULIC EQUIPMENT, USSR

Subject Categories : Fluid Mechanics
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE