Stability analysis of density-wave oscillations in heated channels
Conference
·
· Trans. Am. Nucl. Soc.; (United States)
OSTI ID:6946725
Dynamic analyses of two-phase flow in uniformly and nonuniformly heated channels have been carried out using the drift-flux model for two-phase flow. The utilization of a constant characteristic velocity v/sub 0/ in the definitions of the phase change number N/sub pch/, the dimensionless inlet velocity anti v, and the Froude number Fr has made convenient the study of the effect of different inlet velocities on the stability of the heated channel. The results of the linear analysis for the uniform heat flux (UHF) case demonstrate the importance of the void distribution parameter. Values of the void distribution parameter C/sub 0/ > 1 clearly lead to better agreement with experiment than do values of C/sub 0/ = 1, especially for large subcooling number N/sub sub/ (> 2). The effect of the drift velocity V/sub gj/ on stability is found to be negligible.
- Research Organization:
- Univ. of Virginia, Charlottesville (USA)
- OSTI ID:
- 6946725
- Report Number(s):
- CONF-8711195-
- Conference Information:
- Journal Name: Trans. Am. Nucl. Soc.; (United States) Journal Volume: 55
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
22 GENERAL STUDIES OF NUCLEAR REACTORS
220100* -- Nuclear Reactor Technology-- Theory & Calculation
42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
ENERGY TRANSFER
FLOW MODELS
FLUID FLOW
FLUID MECHANICS
FROUDE NUMBER
HEAT TRANSFER
HYDRAULICS
MATHEMATICAL MODELS
MECHANICS
REACTOR CHANNELS
REACTOR COMPONENTS
TWO-PHASE FLOW
VOID FRACTION
220100* -- Nuclear Reactor Technology-- Theory & Calculation
42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
ENERGY TRANSFER
FLOW MODELS
FLUID FLOW
FLUID MECHANICS
FROUDE NUMBER
HEAT TRANSFER
HYDRAULICS
MATHEMATICAL MODELS
MECHANICS
REACTOR CHANNELS
REACTOR COMPONENTS
TWO-PHASE FLOW
VOID FRACTION