Condensation of water vapor in rarefaction waves. III - Experimental results
Abstract
An experimental investigation is presented of nonequilibrium condensation in a nonstationary rarefaction wave of water vapor-nitrogen mixtures. Density and pressure variations as well as the onset of condensation due to such expansions were monitored at two fixed locations in the driver section of a 2.5 x 2.5 cm shock tube by using a laser Fabry-Perot interferometer, a differential interferometer and piezotron transducers. The effects of the cooling rate on the supersaturation (or supercooling) at the onset of condensation were determined through an empirical relation. An analysis using this relation predicted the path of the condensation front in such rarefaction waves for a set of initial conditions given by: (1) relative humidity, (2) vapor mass fraction, and (3) temperature.
- Publication:
-
AIAA Journal
- Pub Date:
- May 1977
- DOI:
- 10.2514/3.7355
- Bibcode:
- 1977AIAAJ..15..686G
- Keywords:
-
- Condensation;
- Elastic Waves;
- Shock Wave Propagation;
- Two Phase Flow;
- Water Vapor;
- Detonation Waves;
- Fabry-Perot Interferometers;
- Humidity;
- Nonequilibrium Flow;
- Schlieren Photography;
- Shock Tubes;
- Supersaturation;
- Temperature Distribution;
- Fluid Mechanics and Heat Transfer