Numerical simulation of the Rayleigh-Taylor instability using the MPS method

Cheng, HuiFang; Jiang, Shengyao; Bo, Hanliang; Duan, Riqiang

doi:10.1007/s11431-012-4817-6

Cited by 5 publications

(2 citation statements)

References 12 publications

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“…Presently large number of numerical techniques were introduced to simulate RTI including boundary integral methods ( Baker et al 1984), front tracking methods ( Liu et al 2007, Terashima andTryggvason 2009), volume of fluid methods (Hirt and Nichols 1981, Gopala and BGMvan 2008,Raessi et al 2010 and phase field methods (Ding et al 2007, Chiu and Lin 2011, Lee et al 2011, Kim 2005). Cheng et al 2012 numerically simulated RTI by using a moving particle semi-implicit method that was well validated with experimental results. Discontinuous Galerkin method was used to simulate the multi-layered Richtmyer-Meshkov and RTI problems (Henry de Frahen et al 2015).…”

Section: Introductionmentioning

confidence: 89%

Study of Rayleigh Taylor Instability with the Help of CFD Simulation

Saha¹

2020

Preprint

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The purpose of this paper is to simulate a two-dimensional Rayleigh-Taylor instability problem using the classical method of Finite Element analysis of a multiphase model using ANSYS FLUENT 19.2. The governing equations consist of a system of coupled nonlinear partial differential equations for conservation of mass, momentum and phase transport equations. The study focuses on the transient state simulation of Rayleigh Taylor waves and subsequent turbulent mixing in the two phases incorporated in the model. The Rayleigh Taylor instability is an instability of an interface between two fluids of different densities which occurs when the lighter fluid is pushing the heavier fluid in a gravitational field. The problem was governed by the Navier-Stokes and Cahn-Hilliard equations in a primitive variable formulation. The Cahn- Hilliard equations were used to capture the interface between two fluids systems. The objective of this article is to perform grid dependency test on Rayleigh Taylor Instability for 2 different mesh size and compare the results for the variation in Atwood Number. The results were validated with the observations from previous published literatures.

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Section: Introductionmentioning

confidence: 89%

Study of Rayleigh Taylor Instability with the Help of CFD Simulation

Saha¹

2020

Preprint

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“…The discrete method of the governing equations includes gradient models, particle density models, etc. [19,20] . The interaction between particles is described through the kernel function (equation 4).…”

Section: Methods To Solve Cfd Problemsmentioning

confidence: 99%

Analysis and simulation of the influence of initial liquid level on lubricating flow state and oil-churning resistance moment of planetary reducer

Wang

Zhang

2023

J. Phys.: Conf. Ser.

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In order to study the influences of the initial liquid level on lube characteristics and oil-churning resistance moment of gear reducer, the heat generating power of one special kind of planet gear reducer under the special working condition is calculated. The fluid temperature at different initial liquid levels is calculated by FEA method. According to the relation between the physical parameters of the lube and the fluid temperature, the corresponding relation between the physical parameters of the lube and the initial liquid level is deduced. Based on the FEA results, the physical parameters of the lube are set to conduct the co-simulation of the oil-churning process of the planetary reducer under different initial liquid levels by MPS method. Depend on the simulation results, the influence of initial liquid level on lubricating flow state and oil-churning resistance moment of planetary reducer is analysed, and the initial liquid level is sifted. These studies provide methods and reference for lubrication medium set in transmission boxes, such as planet gear reducer and so on.

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