Scaling Parameter of CHF under Oscillatory Flow Condition.

Abstract

Critical heat flux (CHF) was reduced by flow oscillations, and the reduction of CHF was significantly influenced by the flow oscillation period, amplitude, heat capacity of test tube and mean inlet mass flux. A scaling parameter of temperature response of tube wall was derived based on a lumped-parameter model of tube wall heat capacity. Applying this scaling parameter to the CHF data under flow oscillation, the experimental data of CHF was successfully correlated.