This paper describes the experimental strategy developed to improve the modeling of liquid-vapor flows during the chill down of rocket engines by cryogenic fluid in microgravity. A similarity analysis is performed to determine the relevant dimensionless numbers for the design of an experiment similar to engine flows. A literature review on reduced gravity quenching experiments, and on rewetting temperature and film boiling heat transfer shows the lack of validated models for microgravity. Experimental results obtained with the quenching of a glass tube by FC72 during parabolic flight are presented. Especially the impact of gravity and subcooling on rewetting temperature and film boiling heat transfer is investigated. Results show an increase in rewetting temperature, and a decrease in film boiling heat transfer under reduced gravity in agreement with the literature. The comparison of 0g flow pattern with corresponding tests on ground point out a behavior at 0g closer to 1g upflow than 1g downflow. © 2009 AFM EDP Sciences.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Mechanical Engineering
- Industrial and Manufacturing Engineering
Verthier, B., Celata, G. P., Zummo, G., Colin, C., & Follet, J. (2009). Impact de la micro pesanteur sur le flux de chaleur et la température de remouillage lors de la mise en froid d'un tube : application au rallumage de moteurs-fusée. Mecanique et Industries, 10(3-4), 231 - 237. https://doi.org/10.1051/meca/2009062