A strain-rate model for a lattice Boltzmann BGK model in fluid–structure interactions

Shin, Jaeho; Lee, Jiseok; Lee, SangHwan

doi:10.1016/j.compfluid.2013.08.009

Cited by 4 publications

(3 citation statements)

References 23 publications

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“…The refilling scheme for a new fluid node has been considered in several previous studies [27][28][29][30][31]. Lallemand and Luo [27] suggested a scheme based on quadratic extrapolation along the solid local outer normal direction.…”

Section: Introductionmentioning

confidence: 99%

“…In all the above schemes, the non-equilibrium parts of the unknown distribution functions are obtained from extrapolation. Different from them, Shin et al [30] constructed the non-equilibrium parts as well from the local strain rate. Later, based on the same idea, Krithivasan et al [31] used a more general Grad approximation to refill the information at the newly uncovered node points.…”

Section: Introductionmentioning

confidence: 99%

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Implementation issues and benchmarking of lattice Boltzmann method for moving rigid particle simulations in a viscous flow

Peng

Teng

Hwang

et al. 2016

Computers & Mathematics with Applications

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a b s t r a c tIn this work, we revisit implementation issues in the lattice Boltzmann method (LBM) concerning moving rigid solid particles suspended a viscous fluid. Three aspects relevant to the interaction between flow of a viscous fluid and moving solid boundaries are considered. First, the popular interpolated bounce back scheme is examined both theoretically and numerically. It is important to recognize that even though significant efforts had previously been devoted to the performance, especially the accuracy, of different interpolated bounce back schemes for a fixed boundary, there were relatively few studies focusing on moving solid surfaces. In this study, different interpolated bounce back schemes are compared theoretically for a moving boundary. Then, several benchmark cases are presented to show their actual performance in numerical simulations. Second, we examine different implementations of the momentum exchange method to calculate hydrodynamic force and torque acting on a moving surface. The momentum exchange method is well established for fixed solid boundaries, however, for moving solid boundaries there are still open issues such as unphysical force fluctuations and Galilean invariance errors. Recent progress in this direction is discussed, along with our own interpretations and modifications. Several benchmark cases, including a particle-laden turbulent channel flow, are used to demonstrate the effects of different modifications on the accuracy and physical results under different physical configurations. The third aspect is the refilling scheme for constructing the unknown distribution functions for the new fluid nodes that emerge from the previous solid region as a particle moves relative to a fixed lattice grid. We examine and compare the performance of the refilling schemes introduced by Fang et al. (2002), Caiazzo (2008). We demonstrate that improvements can be made to suppress force fluctuations resulting from refilling.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Implementation issues and benchmarking of lattice Boltzmann method for moving rigid particle simulations in a viscous flow

Peng

Teng

Hwang

et al. 2016

Computers & Mathematics with Applications

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show abstract

“…Lattice Boltzmann Method (LBM) is a method of computational fluid and modeling [4,5]. It uses the form of distribution function to replace the traditional evolution of the particle itself and conservation of mass, the conservation of momentum conservation of energy are ensured.…”

Section: Aerodynamic Characteristics and Lattice Boltzmann Methodsmentioning

confidence: 99%

Simulation Research on Aerodynamic Characteristics of Vehicle under Steady Crosswind Based on XFlow

Han

et al. 2014

AMM

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The aerodynamic characteristics of vehicle play a crucial role in steering stability, comfort and safety of vehicle. The crosswind will affect the aerodynamic characteristics of vehicle. In this paper, the aerodynamic characteristics of ASMO model under steady crosswind is simulated by XFlow software, and the changes of aerodynamic characteristics under different steady crosswind are analyzed. It turned out that the asymmetry of wake flow field is enhanced with the increasing of crosswind, and the body surface pressure of windward is amplified, the six components of aerodynamic coefficient are also increased. It is found that the vehicle aerodynamic characteristics changed obviously under steady crosswind.

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Application of the ghost fluid lattice Boltzmann method to moving curved boundaries with constant temperature or heat flux conditions

Mozafari-Shamsi¹,

Sefid

Imani

2018

Computers & Fluids

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A strain-rate model for a lattice Boltzmann BGK model in fluid–structure interactions

Cited by 4 publications

References 23 publications

Implementation issues and benchmarking of lattice Boltzmann method for moving rigid particle simulations in a viscous flow

Implementation issues and benchmarking of lattice Boltzmann method for moving rigid particle simulations in a viscous flow

Simulation Research on Aerodynamic Characteristics of Vehicle under Steady Crosswind Based on XFlow

Application of the ghost fluid lattice Boltzmann method to moving curved boundaries with constant temperature or heat flux conditions

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