Library Subscription: Guest
Home Archives Officers Future meetings Assembly for International Heat Transfer Conferences

SCALING LAW OF FLOW-BOILING CRISIS

L. S. Tong
U.S. Nuclear Regulatory Commission, Washington, D.C. 20555

F. E. Motley
Westinghouse Electric Corporation, Nuclear Energy Systems, Pittsburgh, Pennsylvania U.S.A.

J. O. Cermak
Westinghouse Electric Corporation, Nuclear Energy Systems, Pittsburgh, Pennsylvania U.S.A.

Abstract

The simulation of flow-boiling crisis requires geometric and dynamic similitudes. The dynamic similitude implies both hydrodynamic and thermodynamic similitudes. A review of existing simulation technique for boiling crisis reveals that: (1) the coolant properties at critical pressures can represent its thermal behavior at various pressures, (2) the scaling factor is a function of the ratios of the critical properties of both coolants, (3) the scaling factor can be applied to empirical correlations of critical power, enthalpy rise or quality. A new simulating model has been proposed and its validity is demonstrated. The scaling factors for CHF in a rod bundle at various pressures are presented and verified with experimental data.

Download article Publication Ethics and Malpractice Recommend to my Librarian Bookmark this Page