Adiabatic two-phase flow frictional pressure drop. Part 1: Critical parameters and friction factors for air-water mixture
Abstract
An analysis of air-water frictional pressure drop data for horizontal ducts was made. For small diameter, circular tubes and narrow rectangular channels, it is established that the frictional pressure deep profiles with increasing mixture quality (or superficial gas velocity) are characterized by critical values for gas Reynolds number, quality and friction factor. These characteristic features are in evidence for tests in which the total mass flux of the mixture is held fixed with increasing quality or superficial gas velocity. The effects of duct geometry and total mass flux on the critical parameters are documented and discussed. The results for two-phase flow friction factors are also presented.
- Publication:
-
Presented at the ASME/AIChE/ANS National Heat Transfer Conference
- Pub Date:
- 1991
- Bibcode:
- 1991nht..confS..26O
- Keywords:
-
- Adiabatic Flow;
- Ducted Flow;
- Ducts;
- Friction Factor;
- Pressure Gradients;
- Two Phase Flow;
- Water;
- Adiabatic Conditions;
- Critical Velocity;
- Isentropic Processes;
- Mixtures;
- Reynolds Number;
- Fluid Mechanics and Heat Transfer