Numerical Analysis and Parameter Optimization of J-Shaped Blade on Offshore Vertical Axis Wind Turbine

Pan, Lin; Zhu, Ze; Xiao, Haodong; Wang, Leichong

doi:10.3390/en14196426

Cited by 9 publications

(6 citation statements)

References 23 publications

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“…After the finite element was pre-processed and solved, post-processing was then performed. The accuracy of the numerical simulation results was also verified according to the grid independence [22]. In Ansys workbench, the mesh-independent solution could be determined by setting the target value and having the software automatically perform multiple calculations.…”

Section: Numerical Simulation Of Three-point Bending Testmentioning

confidence: 99%

Displacement Field Variable Modeling Method for Heterogeneous Materials in Wind Power Blade Core Plates

He¹,

Wen²,

Huang³

et al. 2023

Energy Engineering

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In order to study the mechanical properties of the heterogeneous core plate of the wind turbine blade, a modeling method of the core plate based on displacement field variables is proposed. Firstly, the wind turbine blade core plate was modeled according to the theory of modeling heterogeneous material characteristics. Secondly, the three-point bending finite element model of the wind turbine blade core plate was solved by the display dynamic equation to obtain the deformation pattern and force-deformation relationship of the core plate. Finally, the three-point bending static test was conducted to compare with the finite element analysis. The test results show that: the damage form of the wind turbine blade core plate includes elasticity, yield, and failure stages. The main failure modes are plastic deformation, core material collapse, and panel-core delamination. The failure load measured by the test is 1.59 kN, which is basically consistent with the load-displacement result obtained by the simulation, with a difference of only 1.9%, which verifies the validity and reliability of the model. It provides data references for wind turbine blade structure design.

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Section: Numerical Simulation Of Three-point Bending Testmentioning

confidence: 99%

Displacement Field Variable Modeling Method for Heterogeneous Materials in Wind Power Blade Core Plates

He¹,

Wen²,

Huang³

et al. 2023

Energy Engineering

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show abstract

“…The objective weight cloud model of each subsystem and the metal structure of the complete machine is determined by the improved entropy weight method, based on the cloud model. In this study, the objective weight is determined by the information entropyunascertained measure theory and is calculated by Formulas ( 13)- (15).…”

Section: Determination Of the Weight Cloud For The Icwgt-based Portfo...mentioning

confidence: 99%

“…conducted work researching the variable pitch control strategy of a direct-driven offshore wind turbine using a KELM windspeed soft sensor, variable pitch control on direct-driven PMSG for an offshore wind turbine using a Repetitive-TS fuzzy PID control, and wind energy conversion systems analysis of PMSG on offshore wind turbines using improved SMC and the Extended State Observer, etc. [12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Research on the Crane Safety Assessment Method Based on the Cloud Model and ICWGT

et al. 2022

Self Cite

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In crane safety assessment, both quantitative and qualitative indicators are inevitably influenced by the subjective influence of the evaluator, which is unfavorable to the objective requirements of safety assessment. In response to these problems, this study proposes a crane safety assessment method based on the cloud model and the improved combination weighting method of game theory (ICWGT). This evaluation method constructs a multi-level assessment index system for crane safety status by selecting suitable indicators in layers and groups, according to the crane safety assessment rules, and gives a method for constructing the cloud model of the commentary set, the selection and derivation of the membership function, and the determination of the fuzzy relationship matrix. When performing fuzzy synthetic calculations based on the cloud model, the synthetic operator enhances the effect of expectation on entropy and makes the cloud image significantly deformed; this method uses a fine-tuned synthetic operator to improve the algorithm. Compared with the traditional crane fuzzy synthesis assessment method, this method combines the cloud model and ICWGT to achieve finding a balance between expert experience and sample data information, calculating the combined optimization weights of each index and component layer by layer. In order to verify the effectiveness of the method, we take the metal structure system of the shipyard portal crane as an example to explore the applicability of the method in crane safety assessment. The results show that the assessment method can accurately reflect the safety level of the crane and can provide reference material for crane safety assessment.

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“…This study aims to develop an optimised J-shaped blade, using a NACA0015 airfoil as reference, to improve the starting torque while sustaining the performance of a Darrieus turbine. The original works on J-shapes [19][20][21] and more recent studies [25] focused on blades with a hollow and hair-like format, but did not consider the internal geometry of the design. The present work thus evaluates the performance of J-shaped blades with a filled structure.…”

Section: Introductionmentioning

confidence: 99%

CFD-Based J-Shaped Blade Design Improvement for Vertical Axis Wind Turbines

et al. 2022

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The need for an increase in energy harvesting has led to novel ideas and designs to extract more power from wind. One innovative solution is through the use of J-shaped blades for Darrieus vertical axis wind turbines (VAWTs), which is based on the removal of a portion of a conventional blade, either on the pressure or suction side. Although improvements in the self-starting capabilities of VAWTs have been reported when using such blades, the literature only studied hollow blades, showing a hair-like structure. This work numerically investigates six different J-shaped designs. A turbine comprising NACA0015-based blades forms the base case and is used to evaluate the 2D numerical models. Results show that blades with an external cut systematically outperform those designed with an internal cut. In addition, all proposed cut-based designs are shown to improve the starting torque of the turbine, reaching a 135% increase compared to the base model.

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Numerical Analysis and Parameter Optimization of J-Shaped Blade on Offshore Vertical Axis Wind Turbine

Cited by 9 publications

References 23 publications

Displacement Field Variable Modeling Method for Heterogeneous Materials in Wind Power Blade Core Plates

Displacement Field Variable Modeling Method for Heterogeneous Materials in Wind Power Blade Core Plates

Research on the Crane Safety Assessment Method Based on the Cloud Model and ICWGT

CFD-Based J-Shaped Blade Design Improvement for Vertical Axis Wind Turbines

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