ISSN Online: 2377-424X
International Heat Transfer Conference 5
A VISUAL STUDY OF AIR-WATER MIXTURES FLOWING INSIDE SERPENTINE TUBES
Résumé
Hydrodynamic behavior of air-water mixtures flowing inside serpentine tubes, with bends in the vertical plane, was investigated. Flow visualization was accomplished by injecting dye into the liquid phase and recording the events on color slides and color movies. For certain combinations of gas and liquid flow rates, in the annular type flow regime, "film inversion" was observed in the bend as well as in the straight section immediately downstream of the bend. A new flow regime map particularly applicable to two phase flow inside serpentine tubes is presented.