Study on the Shape of Occurrence and Developing of Evaporation Wave in Short Pipe

Wei Min Liu

doi:10.4028/www.scientific.net/AMR.418-420.1948

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 418-420Study on the Shape of Occurrence and Developing of...

Study on the Shape of Occurrence and Developing of Evaporation Wave in Short Pipe

Abstract:

When liquid within short pipe is placed suddenly into low-pressure environment from an atmospheric pressure, the effects of temperature and pressure on occurrence and developing of evaporation wave are studied, the variations of flow patterns are observed. The experimental results show that flow patterns of liquid within short pipe gradually change from bubble rising to blazing bubble flow until annular flow with a decrease in initial environmental pressure. Intensity and moving speed of the evaporation wave increased with a decrease of the diameter of pipe and pressure, and an increase of the fluid temperature. The evaporation wave fronts are in a state of explosive vaporization, instantaneous propagation velocity of evaporation wave fronts is violently fluctuating.

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Periodical:

Advanced Materials Research (Volumes 418-420)

Pages:

1948-1952

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.418-420.1948

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Online since:

December 2011

Authors:

Wei Min Liu

Keywords:

Evaporation Wave, Flow Pattern, Front, Low Pressure

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References

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