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《Chinese Journal of Hydrodynamics》 2011-05
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Numerical investigation of air cushion effects on low filling sloshing impacts

GUO Xiao-yu,WANG Ben-long,LIU Hua(Department of Engineering Mechanics,Shanghai Jiao Tong University,Shanghai 200240,China)  
To investigate the effects of air compressibility on the two phase low filling sloshing,a two dimensional numerical model was developed based on the NS equations and VOF method,in which the air phase could be treated as a compressible fluid.Comparing with experimental results,the air-entrapment and its effects on hydrodynamic loads could not be well predicted with the incompressible air assumption.The existence of compressible air cushion will result in the pressure oscillation on the sidewalls during sloshing process.Finally,numerical investigations of sloshing at low fillings in depressurized conditions were conducted.It turns out that the leading pressure peak value could be well predicted.
【Fund】: 上海市重点学科建设项目(B206)资助
【CateGory Index】: U661
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