Thermal hydraulic stability of flow in parallel channels
Abstract
The thermal hydraulic stability of flow in parallel channels is investigated. A numerical (finite difference) calculational program for analyzing both steady state and transient steam water flows in a heated channel with a prescribed axial heat flux is presented. The model is based on a one dimensional drift velocity formulation of the two phase flow conservation equations, including the effects of radial distribution of void and thermal nonequilibrium between the vapor and liquid phases. Attention is given to flow regimes so as to more properly define the use of available correlations for the constitutive equations. The analysis is extended to superheat regions. Heat effects due to tube walls are included in the analysis. Steady state as well as stability predictions are compared to available experimental results.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 1981
- Bibcode:
- 1981PhDT........36P
- Keywords:
-
- Channel Flow;
- Drift Rate;
- Heat Flux;
- Hydraulic Fluids;
- Parallel Flow;
- Thermal Stability;
- Conservation Equations;
- Constitutive Equations;
- Equilibrium Flow;
- Finite Difference Theory;
- Steam Flow;
- Water Flow;
- Fluid Mechanics and Heat Transfer