In industrial applications, cryogenic liquids are sometimes used as the working fluid of fluid machineries. In those fluids, the thermodynamic suppression effect of cavitation, which is normally ignored in water at room temperature, becomes obvious. When evaporation occurs in the cavitation region, the heat is supplied from the surrounding liquid. Hence, the liquid temperature is decreased, and cavitation is suppressed due to the decrease in saturated vapor pressure. Therefore, the performance of the fluid machinery can be improved. Computational fluid dynamics, which involves the use of a homogeneous model coupled with a thermal transport equation, is a powerful tool for the prediction of cavitation under thermodynamic effects. In this study, a thermodynamic model for a homogeneous model is introduced. In this model, the source term related to the latent heat of phase change appears explicitly, and the degree of heat transfer rate for evaporation and condensation can be adjusted separately to suit the homogeneous model. Our simplified thermodynamic model coupled with the Merkle cavitation model was validated for cryogenic cavitation on a two-dimensional (2D) quarter hydrofoil. The results obtained during the validation showed good agreement (in both pressure and temperature profiles) with the experimental data and were better than existing numerical results obtained by other researchers.
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August 2019
Research-Article
Modification of Energy Equation for Homogeneous Cavitation Simulation With Thermodynamic Effect
Anh Dinh Le,
Anh Dinh Le
Graduate School of Engineering,
Tohoku University,
2-1-1 Katahira, Aoba Ward,
Sendai 980-8577, Miyagi, Japan
e-mail: le@cfs.ifs.tohoku.ac.jp
Tohoku University,
2-1-1 Katahira, Aoba Ward,
Sendai 980-8577, Miyagi, Japan
e-mail: le@cfs.ifs.tohoku.ac.jp
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Junosuke Okajima,
Junosuke Okajima
Institute of Fluid Science,
Tohoku University,
2-1-1 Katahira, Aoba Ward,
Sendai 980-8577, Miyagi, Japan
e-mail: j.okajima@tohoku.ac.jp
Tohoku University,
2-1-1 Katahira, Aoba Ward,
Sendai 980-8577, Miyagi, Japan
e-mail: j.okajima@tohoku.ac.jp
Search for other works by this author on:
Yuka Iga
Yuka Iga
Institute of Fluid Science,
Tohoku University,
2-1-1 Katahira, Aoba Ward,
Sendai 980-8577, Miyagi, Japan
e-mail: iga@cfs.ifs.tohoku.ac.jp
Tohoku University,
2-1-1 Katahira, Aoba Ward,
Sendai 980-8577, Miyagi, Japan
e-mail: iga@cfs.ifs.tohoku.ac.jp
Search for other works by this author on:
Anh Dinh Le
Graduate School of Engineering,
Tohoku University,
2-1-1 Katahira, Aoba Ward,
Sendai 980-8577, Miyagi, Japan
e-mail: le@cfs.ifs.tohoku.ac.jp
Tohoku University,
2-1-1 Katahira, Aoba Ward,
Sendai 980-8577, Miyagi, Japan
e-mail: le@cfs.ifs.tohoku.ac.jp
Junosuke Okajima
Institute of Fluid Science,
Tohoku University,
2-1-1 Katahira, Aoba Ward,
Sendai 980-8577, Miyagi, Japan
e-mail: j.okajima@tohoku.ac.jp
Tohoku University,
2-1-1 Katahira, Aoba Ward,
Sendai 980-8577, Miyagi, Japan
e-mail: j.okajima@tohoku.ac.jp
Yuka Iga
Institute of Fluid Science,
Tohoku University,
2-1-1 Katahira, Aoba Ward,
Sendai 980-8577, Miyagi, Japan
e-mail: iga@cfs.ifs.tohoku.ac.jp
Tohoku University,
2-1-1 Katahira, Aoba Ward,
Sendai 980-8577, Miyagi, Japan
e-mail: iga@cfs.ifs.tohoku.ac.jp
1Corresponding author.
Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received June 27, 2018; final manuscript received December 3, 2018; published online January 30, 2019. Assoc. Editor: Matevz Dular.
J. Fluids Eng. Aug 2019, 141(8): 081102 (12 pages)
Published Online: January 30, 2019
Article history
Received:
June 27, 2018
Revised:
December 3, 2018
Citation
Le, A. D., Okajima, J., and Iga, Y. (January 30, 2019). "Modification of Energy Equation for Homogeneous Cavitation Simulation With Thermodynamic Effect." ASME. J. Fluids Eng. August 2019; 141(8): 081102. https://doi.org/10.1115/1.4042257
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