An in-depth quantitative analysis of wind turbine blade tip wake flow based on the lattice Boltzmann method

Wu, Weimin; Liu, Xiongfei; Dai, Yuanjun; Li, Qiuyan

doi:10.1007/s11356-020-09511-8

Cited by 6 publications

(4 citation statements)

References 24 publications

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“…The applications of CFD have achieved great success in various fields; magnetized-nanofluid [5,6], nonlinear mixed convection [7][8][9], molecular dynamics [10], cellular automata [11] and others have contributed to these developments. In the past few decades, as a mesoscopic CFD method, the lattice Boltzmann method (LBM) has emerged as an intriguing alternative in CFD for simulating fluid flow [12][13][14][15][16][17][18]. Due to its granular nature and local dynamics, LBM offers several advantages over traditional CFD methods, especially when dealing with complex boundary conditions and parallelization requirements.…”

Section: Introductionmentioning

confidence: 99%

Large-Scale Cluster Parallel Strategy for Regularized Lattice Boltzmann Method with Sub-Grid Scale Model in Large Eddy Simulation

Liu,

Chen,

Xiao

et al. 2023

Applied Sciences

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As an improved method of the lattice Boltzmann method (LBM), the regularized lattice Boltzmann method (RLBM) has been widely used to simulate fluid flow. For solving high Reynolds number problems, large eddy simulation (LES) and RLBM can be combined. The computation of fluid flow problems often requires a large number of computational grids and large-scale parallel clusters. Therefore, the high scalability parallel algorithm of RLBM with LES on a large-scale cluster has been proposed in this paper. The proposed parallel algorithm can solve complex flow problems with large-scale Cartesian grids and high Reynolds numbers. In order to achieve computational load balancing, the domain decomposition method (DDM) has been used in large-scale mesh generation. Three mesh generation strategies are adopted, namely 1D, 2D and 3D. Then, the buffer on the grid interface is introduced and the corresponding 1D, 2D and 3D parallel data exchange strategies are proposed. For the 3D lid-driven cavity flow and incompressible flow around a sphere under a high Reynolds number, the given parallel algorithm is analyzed in detail. Experimental results show that the proposed parallel algorithm has a high scalability and accuracy on hundreds of thousands of cores.

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Section: Introductionmentioning

confidence: 99%

Large-Scale Cluster Parallel Strategy for Regularized Lattice Boltzmann Method with Sub-Grid Scale Model in Large Eddy Simulation

Liu,

Chen,

Xiao

et al. 2023

Applied Sciences

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“…Furthermore, both the flow past immersed bodies and the boundary conditions (BCs) used have been of permanent interest for researchers in aerodynamics (Yu et al , 2002; Lockard et al , 2002), wind energy (Deiterding and Wood, 2016; Wu et al , 2021), bio-engineering (Feiger et al , 2019; Kadri et al , 2018), environmental protection (Chen et al , 2017; Lin et al , 2017), heat and mass transfer (Philippi et al , 2006; Siebert et al , 2007) and other related fields.…”

Section: Introductionmentioning

confidence: 99%

Lattice-Boltzmann simulation of incompressible fluid flow past immersed bodies: models and boundary conditions

Krenchiglova

Santos

Siebert

et al. 2022

HFF

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Purpose The main purpose of this paper was to investigate Lattice Boltzmann (LB) models for the bulk incompressible flow past immersed bodies and to find the set of boundary conditions (BCs) that can be considered suitable for modeling the borders of the numerical simulation domain in such a way as to avoid any effect of these BC on the flow trail that is formed behind the body. Design/methodology/approach Three different models of the Lattice Boltzmann equation (LBE) and six different sets of BCs are tested. In addition to the classical LBE based on the Bhatnagar–Gross–Krook (BGK) single relaxation time collision model, a moments-based model and a model with two relaxation times were investigated. Findings The flow pattern and its macroscopic effects on the aerodynamic coefficients appear to be very dependent on the set of BC models used for the borders of the numerical domain. The imposition of pressure at the exit results in pressure perturbations, giving rise to sound waves that propagate back into the simulation domain, producing perturbations on the upwind flow. In the same way, the free-slip BC for the lateral bords appears to affect the trail of vortices behind the body in this range of Reynolds number (Re = 1,000). Originality/value The paper investigates incompressible flow past immersed bodies and presents the set of BCs that can be considered suitable for modeling the borders of the numerical simulation domain in such a way as to avoid any effect of these BCs on the flow trail that is formed behind the body.

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“…Li [30] investigated the aeroelastic coupling effect under periodic unsteady inflows, indicating that the tower shadow effect causes dramatic changes in the tilting moment, thrust force and output power when the blade rotates in front of the tower. Wu [31] investigated the unsteady flow characteristics in the tip region of the blade, observing the static pressure distribution of different blades near the leading edge of the tip is very different due to the influence of turbulence intensity and tower shadow effect.…”

Section: Introductionmentioning

confidence: 99%

Study on the Aerodynamic Performance of Floating Offshore Wind Turbine Considering the Tower Shadow Effect

Hu¹,

Deng²,

Zeng³

2021

Processes

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The aerodynamic performance of the floating offshore wind turbine (FOWT) is obviously affected by the motion of the platform, and becomes much more complicated considering the effect of tower shadow. In view of this, this paper aims at investigating the aerodynamic performance of the floating offshore wind turbine with and without a tower under the three most influential motions (surge, pitch and yaw) by computational fluid dynamic (CFD). The results show that the power of the wind turbine is reduced by 1.58% to 2.47% due to the tower shadow effect under the three motions, and the pressure difference distribution is most obviously interfered by the tower shadow effect under yaw motion and concentrates at the root and tip of the blade. In addition, the degree of interference of the tower shadow effect on the wake flow field is different under the three motions, resulting in a more complex wake structure. These conclusions can provide a theoretical basis and technical reference for the optimal design of floating offshore wind turbines.

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An in-depth quantitative analysis of wind turbine blade tip wake flow based on the lattice Boltzmann method

Cited by 6 publications

References 24 publications

Large-Scale Cluster Parallel Strategy for Regularized Lattice Boltzmann Method with Sub-Grid Scale Model in Large Eddy Simulation

Large-Scale Cluster Parallel Strategy for Regularized Lattice Boltzmann Method with Sub-Grid Scale Model in Large Eddy Simulation

Lattice-Boltzmann simulation of incompressible fluid flow past immersed bodies: models and boundary conditions

Study on the Aerodynamic Performance of Floating Offshore Wind Turbine Considering the Tower Shadow Effect

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