Computational investigation of double stage vertical axis wind turbine

Baruah, Monoj; Swarnakar, Monmi; Das, Nripen

doi:10.1063/1.5096511

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…The result of its implementation shows that VAHT efficiency increased and lead to lower torque fluctuation [18][19]. Moreover, Baruah, et al get an average result of 27.9% in power coefficient increase by implementing dual-stage configuration in vertical axis wind turbine system and a similar result is expected in VAHT [20]. Based on those promising results, this research tries to conduct a performance analysis of dual-stage VAHT configuration with azimuth between stages' variation.…”

Section: Introductionmentioning

confidence: 85%

Performance analysis of dual-stage vertical axis hydrokinetic turbine (VAHT) with azimuth variation at open canal hydrokinetic power plant

Hantoro

Septyaningrum

Nugroho

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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For several decades, the use of hydropower generation using hydrokinetic turbines has grown rapidly, aiming to get energy alternatives and reduce the dependency on fossil energy. Despite it has low efficiency, the vertical axis hydrokinetic turbine (VAHT) has been used to utilize hydro energy and has a promising result. A previous study had stated that the utilization of cascaded blade enhances the performance of VAHT. However, this technology produces fluctuating torque and power during its rotation. Hence the dual-stage VAHT is proposed to overcome this issue to improve VAHT’s efficiency. This research analyzes the dual-stage VAHT’s performances by variating its inter-stage azimuth of 45°, 60°, 75°, and 90°. For each stage, there is six blades that attach at three arms. The computational fluid dynamics (CFD) simulation is employed as its capability to provide in-depth information regarding flow phenomenon, force, and torque. This simulation has proven that the dual-stage configuration has an impact on reducing torque fluctuation of VAHT and show that different of inter-stage azimuth angle brings to different torque fluctuation pattern. The average torque value produced by the new turbine with variations in shift between stages of 45°, 60°, 75° and 90° is 10,119.21 Nm, 10,656.13 Nm, 10,490.31 Nm, and 10,457.3 Nm, respectively.

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Section: Introductionmentioning

confidence: 85%

Performance analysis of dual-stage vertical axis hydrokinetic turbine (VAHT) with azimuth variation at open canal hydrokinetic power plant

Hantoro

Septyaningrum

Nugroho

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

show abstract

“…The Savonius turbine was also developed to capture the energy contained in the hot air from the combustion. This system was developed by flowing hot air through the turbine overlap through the hot air inlet, installed through the bottom of the turbine endplate [11]. Swirling Savonius wind turbine produces better performance than conventional Savonius, where there is an increase in the coefficient of power up to 21.65% from conventional turbine [12].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Circular Cut Off Endplate Effect on the Savonius Turbine

2022

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The Savonius turbine is widely used because it has a simple design. However, the Savonius turbine has a lower efficiency than the Horizontal Axis Wind Turbine (HAWT). Several studies have been conducted to increase the efficiency of the Savonius turbine. Turbine performance can be improved by reducing the negative vortex by creating a flushing effect. This experiment was conducted to determine the impact of circular cut-off end plates on the Savonius turbine. The research results are shown through turbine performance data on wind turbine angular speed, electric power, static torque, and efficiency. The wind turbines with circular cut-off endplates had higher angular velocities than conventional Savonius turbines. The angular velocity measurement is carried out when the turbine is unloading. Meanwhile, the electric power and static torque of a conventional turbine are more significant than a modified turbine. The measurement of electric power and static torque is carried out when the turbine is in a generator-loaded condition (loading).

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Computational investigation of double stage vertical axis wind turbine

Cited by 2 publications

References 4 publications

Performance analysis of dual-stage vertical axis hydrokinetic turbine (VAHT) with azimuth variation at open canal hydrokinetic power plant

Performance analysis of dual-stage vertical axis hydrokinetic turbine (VAHT) with azimuth variation at open canal hydrokinetic power plant

Experimental Study of Circular Cut Off Endplate Effect on the Savonius Turbine

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