The density wave oscillation (DWO) was investigated with parallel rectangular channel test sections, which have 2mm*25mm flow cross section. Test parameters are pressure 1MPa–10MPa, mass velocity 200kg/m2s–800kg/m2, and inlet subcooling 10°C–50°C. The experimental data show that heat flux rises with high mass velocity, inlet subcooling or system pressure at the stable/unstable boundary. In them, increasing mass velocity can greatly improve stability of this two parallel channel system. Period of the oscillation becomes shorter while mass velocity rises, but when inlet subcooling is increased, it becomes longer. The comparison between data from rectangular channels and round tubes indicates they have the same trend based on the dimensionless phase change number and subcooling number.
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18th International Conference on Nuclear Engineering
May 17–21, 2010
Xi’an, China
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
978-0-7918-4932-3
PROCEEDINGS PAPER
Flow Instability Study in Rectangular Channel
Donghua Lu
Donghua Lu
Nuclear Power Institute of China, Chengdu, China
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Donghua Lu
Nuclear Power Institute of China, Chengdu, China
Paper No:
ICONE18-29114, pp. 133-139; 7 pages
Published Online:
April 8, 2011
Citation
Lu, D. "Flow Instability Study in Rectangular Channel." Proceedings of the 18th International Conference on Nuclear Engineering. 18th International Conference on Nuclear Engineering: Volume 4, Parts A and B. Xi’an, China. May 17–21, 2010. pp. 133-139. ASME. https://doi.org/10.1115/ICONE18-29114
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