Accession Number : AD0718151

Title :   On the Spherically Symmetric Phase Change Problem.

Descriptive Note : Final rept.,

Corporate Author : NEW YORK UNIV BRONX SCHOOL OF ENGINEERING AND SCIENCE

Personal Author(s) : Kocamustafaogullari,Gunol ; Zuber,Novak

Report Date : 20 JAN 1971

Pagination or Media Count : 48

Abstract : The objectives of this paper are: To show that the application of the 'thin thermal boundary layer' approximation to collapsing bubbles is incorrect although this approximation has been used by all investigators interested in cavitation. To show that the available analyses based on the heat balance integral method contain a significant error because the assumed temperature profiles are incorrect when applied to a spherically symmetric problem. To solve the spherically symmetric phase change, i.c. 'moving boundary', problem by means of the heat balance integral method using the appropriate temperature profile. To use the results in an analysis of diffusion controlled bubble growth and collapse. Two solutions of the phase change problem are presented. (Author)

Descriptors :   (*BOUNDARY LAYER TRANSITION, BUBBLES), PHASE STUDIES, CAVITATION, THERMAL PROSPERTIES, INTEGRAL EQUATIONS, TWO PHASE FLOW, THERMAL DIFFUSION, HEAT TRANSFER, CONDENSATION, EVAPORATION, NUCLEAR ENGINEERING

Subject Categories : Physical Chemistry
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE