Numerical prediction of wall temperatures for near-critical para-hydrogen in turbulent upflow inside vertical tubes
Abstract
Presented herein is a method of including density fluctuations in the equations of turbulent transport. Results of a numerical analysis indicate that the method may be used to predict heat transfer for the case of near-critical para-hydrogen in turbulent upflow inside vertical tubes. Wall temperatures, heat transfer coefficients, and velocities obtained by coupling the equations of turbulent momentum and heat transfer with a perturbed equation of state show good agreement with experiment for inlet reduced pressures of 1.28-5.83.
- Publication:
-
American Society of Mechanical Engineers
- Pub Date:
- November 1980
- Bibcode:
- 1980asme.meetT....B
- Keywords:
-
- Critical Point;
- Heat Transfer Coefficients;
- Para Hydrogen;
- Performance Prediction;
- Turbulent Flow;
- Wall Temperature;
- Circular Tubes;
- Coolants;
- Finite Difference Theory;
- Flow Velocity;
- Heat Flux;
- Mixing Length Flow Theory;
- Stream Functions (Fluids);
- Working Fluids;
- Fluid Mechanics and Heat Transfer