Numerical simulation of wind loads on a parabolic trough solar collector using lattice Boltzmann and finite element methods

Andre, Michael; Mier-Torrecilla, M.; Wüchner, Roland

doi:10.1016/j.jweia.2015.08.010

Cited by 37 publications

(11 citation statements)

References 32 publications

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“…Nevertheless, a detailed discussion is not the focus of this paper. For further details on this topic we refer to our previous study (Asmuth et al, 2019) as well as numerous other publications; see, for instance, Schönherr et al (2011), Obrecht et al (2013), Januszewski and Kostur (2014), Hong et al (2016. In brief, we shall remark that all simulations with the CLBM ran with an average of 1050 MNUPS (million node updates per second).…”

Section: Computational Performancementioning

confidence: 99%

“…2.3. A preceding study has shown that the forces determined by the ALM can be significantly more sensitive to the Mach number than the bulk flow depending on the smearing width (Asmuth et al, 2019). Under consideration of this issue we chose Ma = 0.1, referring to CFL = 0.058 for the CLBM cases.…”

Section: Code-to-code Comparison In Uniform Inflowmentioning

confidence: 99%

“…crosssectional planes. More recently, Asmuth et al (2019) presented an initial fundamental investigation of the classical ALM for horizontal-axis turbines in a cumulant lattice Boltzmann framework in uniform laminar inflow. The main aspects of the study were the sensitivity of the blade forces of the ALM to the spatial and temporal resolution of the bulk scheme as well as computational performance.…”

Section: Introductionmentioning

confidence: 99%

“…The main portion of the presented study is based on a code-to-code comparison to a standard finite-volume (FV) Navier-Stokes (NS) solver. The primary motivation for this is to extend the aforementioned validation study of this ALM implementation (Asmuth et al, 2019) to the near-and farwake characteristics. The comparison comprises laminar and turbulent inflow cases, respectively.…”

Section: Introductionmentioning

confidence: 99%

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Actuator line simulations of wind turbine wakes using the lattice Boltzmann method

2020

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Abstract. The high computational demand of large-eddy simulations (LESs) remains the biggest obstacle for a wider applicability of the method in the field of wind energy. Recent progress of GPU-based (graphics processing unit) lattice Boltzmann frameworks provides significant performance gains alleviating such constraints. The presented work investigates the potential of LES of wind turbine wakes using the cumulant lattice Boltzmann method (CLBM). The wind turbine is represented by the actuator line model (ALM). The implementation is validated and discussed by means of a code-to-code comparison to an established finite-volume Navier–Stokes solver. To this end, the ALM is subjected to both laminar and turbulent inflow while a standard Smagorinsky sub-grid-scale model is employed in the two numerical approaches. The resulting wake characteristics are discussed in terms of the first- and second-order statistics as well the spectra of the turbulence kinetic energy. The near-wake characteristics in laminar inflow are shown to match closely with differences of less than 3 % in the wake deficit. Larger discrepancies are found in the far wake and relate to differences in the point of the laminar-turbulent transition of the wake. In line with other studies, these differences can be attributed to the different orders of accuracy of the two methods. Consistently better agreement is found in turbulent inflow due to the lower impact of the numerical scheme on the wake transition. In summary, the study outlines the feasibility of wind turbine simulations using the CLBM and further validates the presented set-up. Furthermore, it highlights the computational potential of GPU-based LBM implementations for wind energy applications. For the presented cases, near-real-time performance was achieved using a single, off-the-shelf GPU on a local workstation.

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Section: Computational Performancementioning

confidence: 99%

Section: Code-to-code Comparison In Uniform Inflowmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Actuator line simulations of wind turbine wakes using the lattice Boltzmann method

2020

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“…Andre et al. 19 evaluated the lattice Boltzmann method and the finite element method for wind load calculation of PTCs. The drag, lift, and pitch torque values produced by the two numerical methods are similar.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of impact on wind load due to mirror gap effect for parabolic dish solar concentrator

Maruyama

Gong

Cai

2019

Proceedings of the Institution of Mechanical Engineers, Part A:

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Parabolic dish solar concentrators are currently one of the most efficient solar technologies for the production of electricity. These systems are usually located in an open terrain where strong winds may be found and could affect their stability and optical performance. Mirror gap size has direct relation to thermal efficiency and construction cost. A tiny deformation of the concentrator under the action of a strong wind affects the focusing accuracy and increases the requirement of the structural strength of the dish. In this paper, different gap sizes (0–60 mm) between the mirrors of the dish are studied by numerical simulation. The results show that wind load on concentrator is sensitive to operation position, such as 30° pitch and 60° yaw angle. The gap causes an uneven distribution of the mean pressure coefficient on each facet, thereby increasing the risk of wind-induced vibration at the mirror edge. Besides, the drag coefficient on a parabolic dish increases along with the increase of the gap size between 0 and 60 mm when the dish is at the wind-resistant unfavorable conditions. For the overall wind force on a dish in the state of maximum drag force operation angle case, the mirror gap can reduce the wind force by about 3.54% with the gap size increased, which is mainly due to the significant reduction of the windward area. Therefore, the mirror gap should take as small a size as possible.

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Computational Wind Engineering

Herrmann¹

2019

Wind Effects on Structures

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Numerical simulation of wind loads on a parabolic trough solar collector using lattice Boltzmann and finite element methods

Cited by 37 publications

References 32 publications

Actuator line simulations of wind turbine wakes using the lattice Boltzmann method

Actuator line simulations of wind turbine wakes using the lattice Boltzmann method

Numerical simulation of impact on wind load due to mirror gap effect for parabolic dish solar concentrator

Computational Wind Engineering

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