To predict various phenomena related to flow and heat transfer in space, it is necessary to carry out experiments under microgravity. Considered are the characteristics of gas-liquid two-phase annular flow under microgravity condition utilizing a drop tower. The experiments were carried out in a vertical transparent acrylic tube of 10.5 mm inner diameter and 200 mm length, using a mixture of gaseous nitrogen and water as the working fluid, in an annular flow region. The mean void fraction, pressure drop and liquid film thickness under microgravity were obtained and compared with the results of a ground test. The roughness of the liquid film surface was less and the mean liquid film thickness became greater under microgravity than under normal gravity.
Flow characteristics of gas-liquid two-phase annular flow under microgravity (Experimental results utilizing a drop tower)
Strömungseigenschaften zweiphasiger ringförmiger Strömung von Gas und Flüssigkeit unter Mikrogravitation (Experimentelle Ergebnisse mit einem Fallturm)
JSME International Journal, Series B (Fluids and Thermal Engineering) ; 41 , 3 ; 561-567
1998
7 Seiten, 11 Bilder, 1 Tabelle, 11 Quellen
Article (Journal)
English
Two-Phase Flow Experiment under Microgravity Using a Drop Tower
British Library Conference Proceedings | 1996
|Thermocapillary Flow Under Microgravity -- Experimental Results
Online Contents | 1999
|Thermocapillary Flow Under Microgravity-Experimental Results
British Library Conference Proceedings | 1999
|Two-phase slug-to-annular flow pattern transition in microgravity
Online Contents | 2010
|