A constrained interpolation profile CIP-based numerical tank is developed to simulate violent free surface flows.The numerical simulation is performed by the CIP-based Cartesian grid method,which is described in the p...A constrained interpolation profile CIP-based numerical tank is developed to simulate violent free surface flows.The numerical simulation is performed by the CIP-based Cartesian grid method,which is described in the present paper.The tangent of hyperbola for interface capturing（THINC） scheme is applied for capturing complex free surfaces.The new model is capable of simulating a flow with violently varied free surface.A series of computations are conducted to assess the developed algorithm and its versatility.These tests include the collapse of water column with and without an obstacle,sloshing in a fixed tank,the generation of regular waves in a tank,the generation of extreme waves in a tank.Excellent agreements are obtained when numerical results are compared with available analytical,experimental,and other numerical results.展开更多
入水问题涉及到军事、航空等领域,如子弹入水、船舶砰击等,具有很强的应用背景。物体入水的过程涉及到固、液、气三相流动和相互作用,并伴随水花飞溅、空泡形成等复杂的物理现象。该文基于紧致插值CIP(constrained interpolation profi...入水问题涉及到军事、航空等领域,如子弹入水、船舶砰击等,具有很强的应用背景。物体入水的过程涉及到固、液、气三相流动和相互作用,并伴随水花飞溅、空泡形成等复杂的物理现象。该文基于紧致插值CIP(constrained interpolation profile)数学模型,分步求解Navier-Stokes(N-S)方程,并通过多相流理论描述固-液-气之间的相互作用,采用Volume of Fluid(VOF)类型的高精度紧致tangent of hyperbola for interface capturing(THINC)方法重构自由面。模拟了刚性圆柱和方柱的入水过程,结果与实验数据吻合较好。展开更多
基金supported by the Fundamental Research Funds for the Central Universities
文摘A constrained interpolation profile CIP-based numerical tank is developed to simulate violent free surface flows.The numerical simulation is performed by the CIP-based Cartesian grid method,which is described in the present paper.The tangent of hyperbola for interface capturing（THINC） scheme is applied for capturing complex free surfaces.The new model is capable of simulating a flow with violently varied free surface.A series of computations are conducted to assess the developed algorithm and its versatility.These tests include the collapse of water column with and without an obstacle,sloshing in a fixed tank,the generation of regular waves in a tank,the generation of extreme waves in a tank.Excellent agreements are obtained when numerical results are compared with available analytical,experimental,and other numerical results.
文摘入水问题涉及到军事、航空等领域,如子弹入水、船舶砰击等,具有很强的应用背景。物体入水的过程涉及到固、液、气三相流动和相互作用,并伴随水花飞溅、空泡形成等复杂的物理现象。该文基于紧致插值CIP(constrained interpolation profile)数学模型,分步求解Navier-Stokes(N-S)方程,并通过多相流理论描述固-液-气之间的相互作用,采用Volume of Fluid(VOF)类型的高精度紧致tangent of hyperbola for interface capturing(THINC)方法重构自由面。模拟了刚性圆柱和方柱的入水过程,结果与实验数据吻合较好。
