Modeling and numerical prediction of flow boiling in a thin geometry
Abbreviated Journal Title
J. Heat Transf.-Trans. ASME
boiling; heat transfer; modeling; multi-phase; HEAT-TRANSFER; 2-PHASE FLOW; Thermodynamics; Engineering, Mechanical
An analysis capability to examine the two-phase bubbly flow in high pressure boiling systems has been developed. The models have been adapted from the literature for a narrow high aspect ratio geometry using the measurements obtained in a companion paper Three-dimensional computational results have been compared with cross-section averaged and line-averaged void fractions measured with a gamma densitometer and local void fraction measured with a hot-film anemometer These comparisons have been made over a wide range of flow inlet conditions, wall heating and system pressure. Comparisons are found to be good when the flow is bubbly, but at high void fractions, where the flow is churn-turbulent or annular the two-field modeling approach does not perform adequately. This result emphasizes the need for multiple field modeling.
Journal of Heat Transfer-Transactions of the Asme
"Modeling and numerical prediction of flow boiling in a thin geometry" (2004). Faculty Bibliography 2000s. 4510.