IMECH-IR  > 流固耦合系统力学重点实验室
A numerical model for evolution of internal structure of cloud cavitation
Du TZ(杜特专); Huang CG(黄晨光); Wang YW(王一伟)
Source PublicationOpen Archives of the 16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2016
2019
Conference Name16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2016
Conference DateApril 10, 2016 - April 15, 2016
Conference PlaceHonolulu, HI, United states
AbstractInteraction between bubbles in cloud cavitation play an important role in cavitating flows. A numerical model was developed to study the internal structure and collapse of cloud cavitation. The model consists of: (1) an evolution model of bubble number density taking bubble breakup effects into account; (2) a modified cavitation model based on dynamics of bubble cluster; and (3) the multi-phase Reynolds Averaged Navier-Stokes equations (RANS) for background flow. The evolution model of bubble number density is governed by a transport type equation and the expression of source term is derived from a bubble breakup model. The condensation rate is constructed through dimension analysis and direct simulation of collapse of bubble cluster. The proposed model was tested by flows over a projectile. The results show that the evolution of internal structure of the cloud cavitation is closely related to the development of re-entrant jet. Moreover, the performance of proposed model and the effects of bubble number density on cavitating flows are discussed. © Open Archives of the 16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2016. All rights reserved.
KeywordBubble break up Bubble clusters Bubble number densities Cloud cavitations Condensation rates Dimension analysis Evolution modeling Reynolds Averaged Navier Stokes Equations
Indexed ByEI
Language英语
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/80466
Collection流固耦合系统力学重点实验室
AffiliationInstitute of Mechanics, Chinese Academy of Sciences, Beijing; 100190, China
Recommended Citation
GB/T 7714
Du TZ,Huang CG,Wang YW. A numerical model for evolution of internal structure of cloud cavitation[C]Open Archives of the 16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2016,2019.
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