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A volume-amending method to improve mass conservation of level set approach for incompressible two-phase flows 被引量:1

A volume-amending method to improve mass conservation of level set approach for incompressible two-phase flows
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摘要 A volume-amending method is developed both to keep the level set function as an algebraic distance function and to preserve the bubble mass in a level set approach for incompressible two-phase flows with the significantly deformed free interface. After the traditional reinitialization procedure, a vol-ume-amending method is added for correcting the position of the interface according to mass loss/gain error until the mass error falls in the allowable range designated in advance. The level set approach with this volume-amending method incorporated has been validated by three test cases: the motion of a single axisymmetrical bubble or drop in liquid, the motion of a two-dimensional water drop falling through the air into a water pool, and the interactional motion of two buoyancy-driven three- dimensional deformable bubbles. The computational results with this volume-amending method in-corporated are in good agreement with the reported experimental data and the mass is well preserved in all cases. A volume-amending method is developed both to keep the level set function as an algebraic distance function and to preserve the bubble mass in a level set approach for incompressible two-phase flows with the significantly deformed free interface. After the traditional reinitialization procedure, a volume-amending method is added for correcting the position of the interface according to mass loss/gain error until the mass error falls in the allowable range designated in advance. The level set approach with this volume-amending method incorporated has been validated by three test cases: the motion of a single axisymmetrical bubble or drop in liquid, the motion of a two-dimensional water drop falling through the air into a water pool, and the interactional motion of two buoyancy-driven threedimensional deformable bubbles. The computational results with this volume-amending method incorporated are in good agreement with the reported experimental data and the mass is well preserved in all cases.
出处 《Science China Chemistry》 SCIE EI CAS 2008年第11期1132-1140,共9页 中国科学(化学英文版)
基金 the National Natural Science Foundation of China (Grant Nos. 20490206, 50404009, 20576133 & 20676134) PetroChina,and the National Basic Research Priorities Program (Grant Nos. 2004CB217604, 2007CB613507)
关键词 level SET approach mass CONSERVATION reinitialization volume-amending BUBBLE DROP level set approach mass conservation reinitialization volume-amending bubble drop
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