Abstract
A two-phase flow experiment package was used to collect pressure drop data for corrugated flexible tubes and quick-disconnect attachments. Single-phase pressure drop measurements were taken on the ground and two-phase reduced gravity measurements were obtained on the NASAKC-135. The purpose of this work was to evaluate pressure drop information from the corrugated tubes and quick-disconnect component and develop correlations and prediction methods for two-phase pressure drops in reduced gravity. Results show it is possible to predict pressure drops through the corrugated tubes using the Homogeneous Equilibrium Model and single-phase, groundbased pressure drop measurements. It was also found that a good prediction of pressure drop through the quick-disconnect attachment could be obtained using the Homogeneous Equilibrium Model (with single-phase ground-based measurements) coupled with an orifice pressure drop model by Chisholm. The use of single-phase, ground-based experiments to predict two-phase, reduced gravity component performance could yield significant savings and increased reliability of reduced gravity fluid systems.
Marsden, Kenneth (1996). Two-phase friction pressure drop through corrugated tubes and quick-disconnect attachments in reduced gravity. Master's thesis, Texas A&M University. Available electronically from
https : / /hdl .handle .net /1969 .1 /ETD -TAMU -1996 -THESIS -M37.