Current Achievements and Future Perspectives on Particle Simulation Technologies for Fluid Dynamics and Heat Transfer

Abstract

The Moving Particle Semi-implicit (MPS) method is one of the particle methods in which continuum mechanics is analyzed using the concept of particles. Since meshes are not used, large deformation of free surfaces and material interfaces can be simulated without the problems of mesh distortion. Thus, the MPS method has been applied to multiphase flow analysis in nuclear engineering. The advantages of the particle methods are also useful for applications in other engineering fields: ship engineering, civil engineering, microflow, biomechanics, visualization, etc. In this review, calculation examples are described and classified. Commercial codes have been released and applied in industries. The particle methods are also used in TV programs, movies, and computer games. Combinations of numerical techniques for multiphysics problems, fast calculations, and high-quality visualizations are expected to lead to real-time particle simulations for various new applications in the near future.

A contoured continuum surface force model for particle methods

“…Similarly, the calculated derivatives of the smoothed color function via Eqs. (18)- (27) can be regarded as discretized derivatives of the color function; thus, smoothing color function only helps to discretize the derivatives of color function, as in SPH. Moreover, the smooth radius and the way to smooth the color function is explicitly specified in the present model.…”

“…Second, all the first-and the second-order partial derivatives of f are calculated using Eqs. (23)- (27). Finally, the curvature is calculated using Eq.…”

“…This work is based on MPS, whose main applications and improvements were reviewed by Koshizuka [27]. A series of improvements, such as artificial compressibility [28][29][30], mixed source terms [29][30][31][32][33], the higher-order Laplacian model [34], and modified gradient models [29,30,32,33,35], were proposed to enhance the stability and accuracy of MPS because the original MPS suffered from serious pressure oscillation.…”

Translucent Visual Analysis of Large Scale 3D Point Data Generated by Particle Fluid Simulation of Tsunami Water

“…This simulation reproduces the Ishinomaki city tsunami in the Great East Japan Earthquake disaster of 2011 [11]. The MPS algorithm is adopted in the particle simulation [12]. In this simulation, 10 7 3D points are generated, and the process of the tsunami's landfall is simulated.…”

Current Achievements and Future Perspectives on Particle Simulation Technologies for Fluid Dynamics and Heat Transfer

“…10) and the physical process was considered. [43][44][45] The mechanism of vapor explosions was explained based on the numerical results.…”