Accession Number : ADP004918

Title :   Fluid Mechanics of Quenching,

Corporate Author : RENSSELAER POLYTECHNIC INST TROY NY DEPT OF MATHEMATICAL SCIENCES

Personal Author(s) : Drew,D. A. ; Brent,R. ; Melly,S. ; Schroeder,W. ; Wells,S.

Report Date : FEB 1985

Pagination or Media Count : 22

Abstract : An array of heated rods is lowered vertically in a cold water bath at a constant speed V in order to quench them to obtain desired mechanical properties. Relative to the rods, the water flows in a subchannel, is heated, and boils, while cooling the rods. A model is proposed and studied which considers a one dimensional flow in a subchannel. It is argued that the heat release occurs in a thin region, where water is heated to boiling conditions and boils completely to steam. Above this boiling layer, steam flows rapidly against the friction of the rod bundle. Below the boiling layer, the water flow is approximately hydrostatic. This results in the boiling layer moving at a constant speed proportional to V. The effect of cross flow (leaking into or out of the channel) is also investigated, and the results discussed. (Author)

Descriptors :   *FLUID MECHANICS, *QUENCHING, WATER, BOILING, RODS, CROSS FLOW, PERTURBATIONS, EQUATIONS OF MOTION

Distribution Statement : APPROVED FOR PUBLIC RELEASE