This paper describes the results of an experimental investigation on the flow pattern in pipe flow boiling under microgravity conditions, aiming at obtaining quantitative data and observations on the flow pattern for low gravity conditions. The test tubes are made of Pyrex with two different inner diameters, 4.0 and 6.0 mm, respectively. Fluid flow is vertical upward, while the test fluid is FC-72, a Fluorinert™ liquid. Measurements included wall temperatures along the flow channel, inlet and outlet temperatures, pressures, and mass flow rate. A video camera allows one to take movies of the flow pattern in the last part of the flow channel. The observed flow pattern in the present experimental range is typically bubbly flow and intermittent flow (plug and disordered intermittent flow). Different flow pattern maps are verified with the experimental data and a modification of one of them is proposed.
All Science Journal Classification (ASJC) codes
- Modelling and Simulation
- Condensed Matter Physics
Celata, G. P., Cumo, M., Gervasi, M., & Zummo, G. (2007). Flow pattern analysis of flow boiling in microgravity. Multiphase Science and Technology, 19(2), 183 - 210. https://doi.org/10.1615/MultScienTechn.v19.i2.50