Accession Number : AD0749765

Title :   A Method of Studying the Thermal Properties of Highly-Viscous Fluids and Coarsely-Dispersed Media,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Popov,V. D. ; Terentev,Yu. A.

Report Date : 01 JUN 1972

Pagination or Media Count : 12

Abstract : Relations for the evaluation of thermal diffusivity a, thermal capacity C, and thermal conductivity Lambda = aC were derived by analysis of the differential equation describing the temperature field formed by a permanently acting cylindrical heat source. On simple laboratory equipment and using different conducting media (glycerol, Hg, and molasses) the temperature change with time on the cylindrical source axis was measured. The thermophysical properties of the tested media were evaluated. The values obtained agreed within 4% with handbook values. The possibility of determining the thermal properties of a studied medium at arbitrary moment during the experiment enables the determination of thermal properties of coarsely dispersed media. For example, the method was used for the sugar crystal magma. (Author)

Descriptors :   (*FLUIDS, *THERMAL CONDUCTIVITY), THERMAL PROPERTIES, DIFFERENTIAL EQUATIONS, MERCURY, GLYCEROLS, THERMAL DIFFUSION, VISCOSITY, SPECIFIC HEAT, TEST METHODS, WATER, USSR

Subject Categories : Physical Chemistry
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE