Lattice Boltzmann large eddy simulation of subcritical flows around a sphere on non-uniform grids

Stiebler, Maik; Krafczyk, Manfred; Freudiger, Sören; Geier, Martin

doi:10.1016/j.camwa.2011.03.063

Cited by 41 publications

(24 citation statements)

References 21 publications

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“…The obtained values are compared in Fig. 11 to the values obtained by Stiebler et al [43] using MRT-LES simulations and to five different regression equations obtained from experimental data by various authors (see Appendix K for details). A similar study using almost the same resolution was recently presented by Eitel-Amor et al [44].…”

Section: Flow Around a Spherementioning

confidence: 92%

See 1 more Smart Citation

The cumulant lattice Boltzmann equation in three dimensions: Theory and validation

Geier

Schönherr

Pasquali

et al. 2015

Computers & Mathematics with Applications

355

293

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a b s t r a c tWe propose, analyze, and validate a lattice Boltzmann model with a cumulant collision operator. The new model is analytically and numerically shown to poses smaller errors than a moment based Multiple Relaxation Time lattice Boltzmann model. We demonstrate the usability of the cumulant lattice Boltzmann model by simulations of flow around a sphere for Reynolds numbers from 200 to 10 5 .

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Section: Flow Around a Spherementioning

confidence: 92%

“…The Galilean correction is seen to have no effect on the phase error. in [43,44] while the current study applies no modifications to the collision operator other than setting the appropriate viscosity by ω 1 .…”

Section: Flow Around a Spherementioning

confidence: 99%

The cumulant lattice Boltzmann equation in three dimensions: Theory and validation

Geier

Schönherr

Pasquali

et al. 2015

Computers & Mathematics with Applications

355

293

View full text Add to dashboard Cite

show abstract

“…In the context of LBM applied to turbulent flows, there have been some notable work on some fundamental and complex flows using LES [1][2][3][4][5][6][7][8][9][10][11], following the pioneering work by Hou et al [12], who successfully incorporated the Smagorinsky subgrid model [13] to the LBM framework. However, investigations involving the application of LBM for LES on the GPU are still at an early stage, and further evaluation of its accuracy and efficiency is necessary.…”

Section: Introductionmentioning

confidence: 99%

The Lattice Boltzmann Method Implemented on the GPU to Simulate the Turbulent Flow Over a Square Cylinder Confined in a Channel

Koda

Lien

2014

Flow Turbulence Combust

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The lattice Boltzmann method (LBM) is a relatively new method for fluid flow simulations, and is recently gaining popularity due to its simple algorithm and parallel scalability. Although the method has been successfully applied to a wide range of flow physics, its capabilities in simulating turbulent flow is still under-validated. Hence, in this paper, a 3D LBM code was developed to investigate the validity of the LBM for turbulent flow simulations through large eddy simulations (LES). A GPU enabled LBM code was developed, and validated against a benchmark test case involving the flow over a square cylinder in square channel. The flow results showed good agreement with literature, and speedups of over 150 times were observed when two GPUs were used in parallel. Turbulent flow simulations were then conducted using LES with the Smagorinsky subgrid model. The methodology was first validated by computing the fully developed turbulent channel flow, and comparing the results against direct numerical simulation results. The results were in good agreement despite the relatively coarse grid. The code was then used to simulate the turbulent flow over a square cylinder confined in a channel. In order to emulate a realistic inflow at the channel inlet, an auxiliary simulation consisting of a fully developed turbulent channel flow was run in conjunction, and its velocity profile was used to enforce the inlet boundary condition for the cylinder flow simulation. Comparison of the results with experimental and numerical results revealed that the presence of the turbulent flow structures at the inlet can significantly influence the resulting flow field around the cylinder.

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“…We present now the application of the Smagorinsky SGS model to LBM (Chang et al, 2013;Stiebler et al, 2011). In the lattice Boltzmann method, the kinematic viscosity of the fluid ν is uniquely linked with the relaxation time τ .…”

Section: Large Eddy Simulation In Lbmmentioning

confidence: 99%

“…interpolation of the body boundary (Mei et al, 2002). Stiebler et al (2011) presented an LBM simulation of the flow around a sphere with the use of local discretisation refinement. In the present work, simulations have been carried out for a selection of Reynolds numbers varying from 30 up to 10 4 .…”

Section: Introductionmentioning

confidence: 99%

Application of the Lattice Boltzmann Method to the flow past a sphere

Kajzer

Pozorski

2017

jtam

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The results of fully resolved simulations and large eddy simulations of bluff-body flows obtained by means of the Lattice Boltzmann Method (LBM) are reported. A selection of Reynolds numbers has been investigated in unsteady laminar and transient flow regimes. Computed drag coefficients of a cube have been compared with the available data for validation purposes. Then, a more detailed analysis of the flow past a sphere is presented, including also the determination of vortex shedding frequency and the resulting Strouhal numbers. Advantages and drawbacks of the chosen geometry implementation technique, so called "staircase geometry", are discussed. For the quest of maximum computational efficiency, all simulations have been carried out with the use of in-house code executed on GPU.

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Lattice Boltzmann large eddy simulation of subcritical flows around a sphere on non-uniform grids

Cited by 41 publications

References 21 publications

The cumulant lattice Boltzmann equation in three dimensions: Theory and validation

The cumulant lattice Boltzmann equation in three dimensions: Theory and validation

The Lattice Boltzmann Method Implemented on the GPU to Simulate the Turbulent Flow Over a Square Cylinder Confined in a Channel

Application of the Lattice Boltzmann Method to the flow past a sphere

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