An IB-LBM implementation for fluid-solid interactions with an MLS approximation for implicit coupling

Wang, Wenquan; Yan, Yan; Liu, G.R.

doi:10.1016/j.apm.2018.06.021

Cited by 13 publications

(6 citation statements)

References 48 publications

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“…Determining flow over a circular cylinder is a classic test in fluid mechanics. A lot of experimental results and numerical results are available, so they are used to validate the IB-LBMs [ 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 ]. Herein, we further verify the accuracy of the IB-LBM proposed in this paper under the unsteady condition and mass conservation (the strictly satisfied no-slip boundary condition).…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, the airfoil is a movable, rigid body with one degree of freedom; the same settings can be seen in ref. [ 40 ]. The airfoil rotationally oscillated about the fixed point

.…”

Section: Resultsmentioning

confidence: 99%

“…It can be seen that the maximum angle was comparable to the vibration amplitude of ref. [ 40 ], and the maximum angle was about 0.6 rad. Similar to ref.…”

Section: Resultsmentioning

confidence: 99%

“…For this reason, T Seta proposed a non-iterative implicit IB-LBM method, but this method obviously can only provide relatively low accuracy and slightly different results compared with implicit and iterative schemes [ 39 ]. Wang developed an improved approximation method to combine the implicit IB-LBM method [ 40 ]. Gsell uses an analytical approximation of the non-reciprocity error to correct immersed boundary force and prevent boundary slip and flow penetration [ 41 ].…”

Section: Introductionmentioning

confidence: 99%

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An Explicit-Correction-Force Scheme of IB-LBM Based on Interpolated Particle Distribution Function

Liu

Shi

2023

Entropy

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In order to obtain a better numerical simulation method for fluid–structure interaction (FSI), the IB-LBM combining the lattice Boltzmann method (LBM) and immersed boundary method (IBM) has been studied more than a decade. For this purpose, an explicit correction force scheme of IB-LBM was proposed in this paper. Different from the current IB-LBMs, this paper introduced the particle distribution function to the interpolation process from the fluid grids to the immersed boundary at the mesoscopic level and directly applied the LBM force models to obtain the interface force with a simple form and explicit process. Then, in order to ensure the mass conservation in the local area of the interface, this paper corrected the obtained interface force with the correction matrix, forming the total explicit-correction-force (ECP) scheme of IB-LBM. The results of four numerical tests were used to verify the order of accuracy and effectiveness of the present method. The streamline penetration is limited and the numerical simulation with certain application significance is successful for complex boundary conditions such as the movable rigid bodies (free oscillation of the flapping foil) and flexible deformable bodies (free deformation of cylinders). In summary, we obtained a simple and alternative simulation method that can achieve good simulation results for engineering reference models with complex boundary problems.

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Section: Resultsmentioning

confidence: 99%

“…Therefore, the airfoil is a movable, rigid body with one degree of freedom; the same settings can be seen in ref. [ 40 ]. The airfoil rotationally oscillated about the fixed point

.…”

Section: Resultsmentioning

confidence: 99%

“…It can be seen that the maximum angle was comparable to the vibration amplitude of ref. [ 40 ], and the maximum angle was about 0.6 rad. Similar to ref.…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An Explicit-Correction-Force Scheme of IB-LBM Based on Interpolated Particle Distribution Function

Liu

Shi

2023

Entropy

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“…Beyond this region, its weight is small and the influence can be ignored. As an indispensable part of the moving least square method, the selection of weight function is very important to the fitting accuracy [26,27]. Generally speaking, the circle is chosen as the support domain of the weight function, and its radius is denoted as , as shown in Fig.…”

Section: ) the Fitting Functionmentioning

confidence: 99%

An Improved Poisson Surface Reconstruction Algorithm based on the Boundary Constraints

Liu¹,

Wang²,

Tahir³

et al. 2023

IJACSA

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The usage of the point cloud surface reconstruction to generate high-precision 3D models has been widely applied in various fields. In order to deal with the problems of insufficient accuracy, pseudo-surfaces and high time cost caused by the traditional surface reconstruction algorithms of the point cloud data, this paper proposes an improved Poisson surface reconstruction algorithm based on the boundary constraints. For large density point cloud data obtained from 3D laser scanning, the proposed method firstly uses an octree instead of the KD-tree to search the near neighborhood; then, it uses the Open Multi-Processing (OpenMP) to accelerate the normal estimation based on the moving least squares algorithm; meanwhile, the leastcost spanning tree is employed to adjust the consistency of the normal direction; and finally a screened Poisson algorithm with the Neumann boundary constraints is proposed to reconstruct the point cloud. Compared with the traditional methods, the experiments on three open datasets demonstrated that the proposed method can effectively reduce the generation of pseudosurfaces. The reconstruction time of the proposed algorithm is about 16% shorter than that of the traditional Poisson reconstruction algorithm, and produce better reconstruction results in the term of quantitative analysis and visual comparison.

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A non-iterative immersed boundary-lattice Boltzmann method with boundary condition enforced for fluid–solid flows

Tao

Chen

et al. 2019

Applied Mathematical Modelling

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An IB-LBM implementation for fluid-solid interactions with an MLS approximation for implicit coupling

Cited by 13 publications

References 48 publications

An Explicit-Correction-Force Scheme of IB-LBM Based on Interpolated Particle Distribution Function

An Explicit-Correction-Force Scheme of IB-LBM Based on Interpolated Particle Distribution Function

An Improved Poisson Surface Reconstruction Algorithm based on the Boundary Constraints

A non-iterative immersed boundary-lattice Boltzmann method with boundary condition enforced for fluid–solid flows

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