Poly-disperse simulation of condensing steam-water flow inside a large vertical pipe
Poly-disperse simulation of condensing steam-water flow inside a large vertical pipe
Liao, Y.; Lucas, D.
Abstract
The condensation of saturated steam bubbles in sub-cooled water inside a vertical pipe is studied by poly-disperse CFD simulations. Six test cases with varied pressure, liquid sub-cooling and diameter of the gas injection orifices are investigated. Baseline closures presented for non-drag forces in previous work are found to be reliable also in non-isothermal cases. The effect of bubble coalescence and breakup is negligible in cases with small orifice diameter. The Ranz-Marshall correlation leads to a global under-estimation of the condensation rate, especially at high pressure levels.
Keywords: Poly-disperse; CFD simulation; Condensation; Steam-Water
Involved research facilities
- TOPFLOW Facility
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International Journal of Thermal Sciences 104(2016), 194-207
DOI: 10.1016/j.ijthermalsci.2016.01.016
Cited 26 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-22162