Three Dimensional Particle Cluster Approach for Liquid Sloshing
The understanding of the physical processes inside a liquid is the main key to understandthe vital phenomena in nature and procedure. Especially a proper simulation of liquid sloshing hasalways been a delicate problem for researchers. In engineering, liquid sloshing has become animportant issue due to the development of spacecraft and rocket launchers. There, they often carry aconsiderable amount of liquid fuel, which exceeds hundreds of tons. Together with the external forces(aerodynamic forces, propulsion), sloshing of liquid is therefore a potential source of disturbance forthe overall loads on the structure. The modeling of liquid dynamics is a vast area for scientificresearch due to different requirements. A great number of approaches have been done analytically,numerically and in experiments to predict the effectiveness of sloshing mass and inertia of the liquid.Innovative simulation approaches have been done, namely Euler and Navier-Stokes codes areavailable. Analytic approaches have been done but they are often limited to special problems.In this work we considered a different approach which deals with macroscopic particleclusters, which have billions of real molecules. The properties of real molecules (which have amicroscopic dimension of some 10E-15 meter) are transformed to the macroscopic particle clusterswhich have dimensions of some 10E-02 meters. Particle Methods actually discretize the liquid volumewith particle instead of structured and unstructured meshes. It is based on discrete particle clustermechanics obeying interference laws resulting from molecular dynamics. The basic idea of particlecluster approach, we used here, is to discretize a liquid volume by particle of macroscopic dimensionsand time scales resulting from molecular dynamic quantities. Particle clusters are assumed to besphere with constant diameter, constant mass and a Lennard-Jones Potential simulating attractive andrepulsive forces.
Particle Cluster Approach Molecular Dynamics Liquid Sloshing
Muhammad Aqeel Baozeng Yue
Department of Mechanics, School of Aerospace Engineering,Beijing Institute of Technology, Beijing 10
国内会议
哈尔滨
英文
1-9
2011-08-22（万方平台首次上网日期，不代表论文的发表时间）