{"title":"An improved moving particle semi-implicit methodfor dam break simulation","authors":"Qiaorui Wu, M. Tan, J. Xing","doi":"10.3969/J.ISSN.1007-7294.2014.09.004","DOIUrl":null,"url":null,"abstract":"Dam break is quite a common and hazard phenomenon in shipbuilding and ocean engineering. The objective of this study is to investigate dam break hydrodynamics with improved Moving Particle Semi-implicit method (MPS). Compared to traditional mesh methods, MPS is feasible to simulate surface flows with large deformation, however, during the simulation, the pressure oscillates violently, due to misjudgment of surface particles as well as particles gathering together. To modify these problems, a new arc method is applied to judge free surface particles, and a collision model is introduced to avoid particles from gathering together. Hydrostatic pressure is simulated by original and improved MPS. The results verify that improved MPS method is more effective. Based on these, dam break model is investigated with improved MPS.","PeriodicalId":52534,"journal":{"name":"船舶力学","volume":"1 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"9","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"船舶力学","FirstCategoryId":"1087","ListUrlMain":"https://doi.org/10.3969/J.ISSN.1007-7294.2014.09.004","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Engineering","Score":null,"Total":0}
引用次数: 9
Abstract
Dam break is quite a common and hazard phenomenon in shipbuilding and ocean engineering. The objective of this study is to investigate dam break hydrodynamics with improved Moving Particle Semi-implicit method (MPS). Compared to traditional mesh methods, MPS is feasible to simulate surface flows with large deformation, however, during the simulation, the pressure oscillates violently, due to misjudgment of surface particles as well as particles gathering together. To modify these problems, a new arc method is applied to judge free surface particles, and a collision model is introduced to avoid particles from gathering together. Hydrostatic pressure is simulated by original and improved MPS. The results verify that improved MPS method is more effective. Based on these, dam break model is investigated with improved MPS.
期刊介绍：
Journal of Ship Mechanics (monthly) was founded in 1997. It is a professional academic journal jointly sponsored by China Ship Science Research Center and China Society of Naval Architecture and published at home and abroad. Its purpose is to disseminate and accumulate scientific and technological achievements in ship and ocean engineering mechanics, promote scientific and technological exchanges and achievement transformation, promote discipline development, and serve the national economy and scientific research and production. The main columns of this journal include: fluid mechanics; structural mechanics; fluid and structural acoustics; research review. It focuses on publishing innovative scientific research results and research progress reviews in fluid mechanics, structural mechanics, fluid and structural acoustics in the field of ship and ocean engineering.
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