Heat Transfer by Gas-Liquid Mixture in Forced Turbulent Flow with Weak Vaporization of the Liquid Phase; TRANSFERT DE CHALEUR PAR MELANGE DE LIQUIDE ET DE GAZ EN CONVECTION FORCEE TURBULENTE AVEC FAIBLE VAPORISATION DE LA PHASE LIQUIDE
Technical Report
·
OSTI ID:4701104
Measurements were made of heat transfer and pressure drop in two-phase liquid flow. The stream was of the annular dispersed type, obtained by introducing a small quantity of liquid in a gas turbulent flow. The heat transfer experiments were performed without vaporization of the liquid phase. A notable improvement of the heat transfer coefficient of such a stream was observed, compared with a gas-alone or liquid-alone flow. The improvement concerning the gas-alone was of about 20 when compared with the same gas Reynolds number, of about 8 when it is compared with the same total mass flow rate. A hydrodynamic study of the flow pattern demonstrates the original structure of the flow, and allows the experimental results to be predicted by means of a simplified theory. (P.C.H.)
- Research Organization:
- France. Commissariat a l'Energie Atomique. Centre d'Etudes Nucleaires, Grenoble
- NSA Number:
- NSA-17-025408
- OSTI ID:
- 4701104
- Report Number(s):
- CEA-2196
- Country of Publication:
- France
- Language:
- English
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