CFD analysis of horizontal axis wind turbine braking system using chordwise spacing

Navinkumar, B.; Parammasivam, K. M.; Saravanakumar, R.; Mohanavel, V.

doi:10.1016/j.matpr.2020.05.564

Cited by 3 publications

(1 citation statement)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In wind turbines, the lift force creates the rotor torque due to pressure distribution, which slotting can alter. However, this distribution change keeps the rotational velocity under control even in extreme wind speeds (Navinkumar et al, 2021). A HAWT is outstanding in energy efficiency, producing relatively constant torque and demonstrating higher power coefficients.…”

Section: Horizontal Axis Wind Turbinementioning

confidence: 99%

Performance of a HAWT Rotor with a Modified Blade Configuration

Khan¹,

Singh²,

Sultan³

et al. 2021

JST

View full text Add to dashboard Cite

As the world focuses more on clean and green Earth, wind energy plays a significant role. Wind energy is a renewable source of energy that can cope with the ongoing global fossil fuel crisis. The wind energy converters like wind turbines have been studied a lot in terms of design and performance. The current work includes analyzing the output effects of a horizontal axis wind turbine (HAWT) with a modified blade configuration at specific wind speeds. A numerical investigation is carried out using two different numerical software on the chosen airfoil used in blade design validated with the analysis carried out in open-loop wind tunnels. The study is divided into two phases: first, the selected airfoil is tested experimentally and using CFD, and then the findings are compared to those of the University of Illinois Urbana Champaign wind tunnel tests at low Reynolds numbers. The second phase includes the numerical analysis based on the blade element momentum method and non-linear lifting line simulations of modified blade design at high Reynolds number. The numerical results of rotor performance analysis have been compared to existing experimental results. The findings of all numerical investigations agree with those of the experiments. An optimal value of the power coefficient is obtained at a particular tip speed ratio close to the desired value for large wind turbines. For maximum power, this study investigates the optimum pitch angle. The work demonstrated the improved HAWT rotor blade design to produce better aerodynamic lift and thus improve performance.

show abstract

Section: Horizontal Axis Wind Turbinementioning

confidence: 99%

Performance of a HAWT Rotor with a Modified Blade Configuration

Khan¹,

Singh²,

Sultan³

et al. 2021

JST

View full text Add to dashboard Cite

show abstract

Numerical investigation of expansion Fan optimization of truncated annular aerospike nozzle

Balaji

Kumar

Vijayarangam

et al. 2021

Materials Today: Proceedings

View full text Add to dashboard Cite

High-Fidelity Modeling and Investigation on Blade Shape and Twist Angle Effects on the Efficiency of Small-Scale Wind Turbines

2023

View full text Add to dashboard Cite

A high-fidelity analysis is carried out in order to evaluate the effects of blade shape, airfoil cross-section. as well as twist angle distribution on the yielded torque and generated power of a horizontal axis Small-Scale Wind Turbine (SSWT). A computational modeling and an effective design for a small turbine with a blade length of 25 cm subject to a 4 m/s freestream velocity are presented, in which a segregated RANS solver is utilized. Four airfoil profiles are assessed, namely NACA0012, NACA0015, NACA4412, and NACA4415, and two blade shape configurations, rectangular and tapered, are evaluated. The flow around the rotating turbines is investigated along with blade stresses and performance output for each configuration. Subsequently, the impact of various linear and nonlinear twist distributions on SSWT efficiency is also examined. Results show that for the studied operating conditions corresponding to low-speed flows, the rectangular blade configuration outperforms the tapered blade shape from the generated torque and power perspectives, while the tapered shape configuration represents an attractive design choice from the yielded stresses point of view. Additionally, while the nonlinear twist configuration results in the best performance among the configurations studied, an SSWT blade design implementing a linear twist distribution can be highly competitive provided that a good slope is carefully selected.

show abstract

CFD analysis of horizontal axis wind turbine braking system using chordwise spacing

Cited by 3 publications

References 8 publications

Performance of a HAWT Rotor with a Modified Blade Configuration

Performance of a HAWT Rotor with a Modified Blade Configuration

Numerical investigation of expansion Fan optimization of truncated annular aerospike nozzle

High-Fidelity Modeling and Investigation on Blade Shape and Twist Angle Effects on the Efficiency of Small-Scale Wind Turbines

Contact Info

Product

Resources

About