Two-phase pressure drop across a hydrofoil-based micro pin device using R-123
Two-phase pressure drop across a hydrofoil-based micro pin device using R-123
- Neue Suche nach: Kosar, Ali
- Neue Suche nach: Kosar, Ali
The two-phase pressure drop in a hydrofoil-based micro pin fin heat sink has been investigated using R-123 as the working fluid. Two-phase frictional multipliers have been obtained over mass fluxes from 976 to 2349 kg/m2s and liquid and gas superficial velocities from 0.38 to 1.89 m/s and from 0.19 to 24 m/s, respectively. It has been found that the two-phase frictional multiplier is strongly dependent on flow pattern. The theoretical prediction using Martinelli parameter based on the laminar fluid and laminar gas flow represented the experimental data fairly well for the spray-annular flow. For the bubbly and wavy-intermittent flow, however, large deviations from the experimental data were recorded. The Martinelli parameter was successfully used to determine the flow patterns, which were bubbly, wavy-intermittent, and spray-annular flow in the current study.
Dokumentinformationen
Two-phase pressure drop across a hydrofoil-based micro pin device using R-123
Zweiphasendruckabfall über einem Mikrostabrippenbauelement auf Basis von Wassertragflächenprofilen unter Verwendung von R-123
Experimental Thermal and Fluid Science ; 32 , 6 ; 1213-1221
2008
9 Seiten, 7 Bilder, 2 Tabellen, 24 Quellen
Aufsatz (Zeitschrift)
Englisch