The Correction and Evaluation of Cavitation Model considering the Thermodynamic Effect
Joint Authors
Li, Wei
Yang, Yongfei
Shi, Wei-dong
Zhao, Xiaofan
Li, Weiqiang
Source
Mathematical Problems in Engineering
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-04-02
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Two cavitation models with thermodynamic effects were established based on the Rayleigh-Plesset equation to predict accurately the cavitation characteristics in the high-temperature fluid.
The evaporation and the condensation coefficient of the cavitation model were corrected.
The cavitation flow of NACA0015 airfoil was calculated using the modified cavitation model, where the influence of the thermodynamic effects of airfoil cavitation was analyzed.
The result showed that the pressure coefficient distribution and the bubble volume fraction simulated have the same tendency of Zwart-Gerber-Belamri model’s result.
According to the experimental data, the two models provide more accurate results.
At the room temperature, the values of dpv/dT obtained by the two improved models are approximately equal.
The difference between the two models’ results increases gradually with the temperature increasing, but it is still small.
The simulation results are consistent with the experimental data when the evaporation coefficient is 10 and 1.
When the evaporation coefficient is 1, the bubble growth is inhibited, the volume fraction becomes lower, and the cavitation area becomes flat.
As the temperature increases, the cavitation area and the bubble volume fraction at airfoil front edge become larger, showing that the temperature plays a “catalytic” role in the cavitation process.
American Psychological Association (APA)
Li, Wei& Yang, Yongfei& Shi, Wei-dong& Zhao, Xiaofan& Li, Weiqiang. 2018. The Correction and Evaluation of Cavitation Model considering the Thermodynamic Effect. Mathematical Problems in Engineering،Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1208744
Modern Language Association (MLA)
Li, Wei…[et al.]. The Correction and Evaluation of Cavitation Model considering the Thermodynamic Effect. Mathematical Problems in Engineering No. 2018 (2018), pp.1-11.
https://search.emarefa.net/detail/BIM-1208744
American Medical Association (AMA)
Li, Wei& Yang, Yongfei& Shi, Wei-dong& Zhao, Xiaofan& Li, Weiqiang. The Correction and Evaluation of Cavitation Model considering the Thermodynamic Effect. Mathematical Problems in Engineering. 2018. Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1208744
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1208744