Numerical simulations of a horizontal axis water turbine designed for underwater mooring platforms

Tian, Wenlong; Song, Baowei; VanZwieten, James H.; Pyakurel, Parakram; Li, Yanjun

doi:10.1016/j.ijnaoe.2015.10.003

Cited by 19 publications

(17 citation statements)

References 12 publications

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“…Like wind turbines, the vertical axis turbines are much quieter compared with the horizontal types, and the horizontal axis turbines often generate low-frequency noise at blade passing frequency and higher order harmonics, which are harmful to the environment [17]. This phenomenon has also been confirmed by the research group from Northwestern Polytechnical University, with a series of continuous research [4,5,7,8,18]. In fact, the HAHT investigated in this paper and the horizontal axis wind turbines are similar to the rotating machinery of renewable energy.…”

Section: Introductionmentioning

confidence: 91%

“…For the utilization of ocean wave energy, conversion devices are also expected to be located near the ocean surface, which is infeasible for deep-water UUMPs. As a matter of fact, UUMPs are often placed where ocean currents are consistently available [5], which could provide an effective energy supply to recharge the UUMPs.…”

Section: Introductionmentioning

confidence: 99%

“…However, the maximum power coefficient of the turbine is very low (only 0.1) because of the disturbance of the hull. Subsequently, they investigated several types of HAHT [5,7,8], and the results showed that the maximum power coefficient has significantly improved. The investigation of HAHT is still a hot topic all over the world [9,10].…”

Section: Introductionmentioning

confidence: 99%

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Noise Characteristics Analysis of the Horizontal Axis Hydrokinetic Turbine Designed for Unmanned Underwater Mooring Platforms

Dang

Mao

Song

et al. 2019

JMSE

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Operating horizontal axis hydrokinetic turbine (HAHT) generates noise affecting the ocean environment adversely. Therefore, it is essential to determine the noise characteristics of such types of HAHT, as large-scale turbine sets would release more noise pollution to the ocean. Like other rotating machinery, the hydrodynamic noise generated by the rotating turbine has been known to be the most important noise source. In the present work, the transient turbulent flow field of the HAHT is obtained by incompressible large eddy simulation, thereafter, the Ffowcs Williams and Hawkings acoustic analogy formulation is carried out to predict the noise generated from the pressure fluctuations of the blade surface. The coefficient of power is compared with the experimental results, with a good agreement being achieved. It is seen from the pressure contours that the 80% span of the blade has the most severe pressure fluctuations, which concentrate on the region of leading the edge of the airfoil and the suction surface of the airfoil. Then, the noise characteristics around a single turbine are systematically studied, in accordance with the results of the flow field. The noise characteristics around the whole turbine are also investigated to determine the directionality of the noise emission of HAHT.

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Section: Introductionmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

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Noise Characteristics Analysis of the Horizontal Axis Hydrokinetic Turbine Designed for Unmanned Underwater Mooring Platforms

Dang

Mao

Song

et al. 2019

JMSE

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“…Previous studies have studied the feasibility of using solar energy to power a sensor network. 6 Similarly, the Institute of Unmanned Underwater Vehicles (IUUV) at Northwestern Polytechnical University (NPU) has designed two ocean current turbines, including a vertical axis ocean current turbine (VAOCT) 7 and a horizontal axis ocean current turbine (HAOCT), 8 to extract energy from the ocean currents and power the UMPs. The turbines will be installed on the UMPs as independent units.…”

Section: Introductionmentioning

confidence: 99%

“…A previous study proved that the HAOCT had a relatively high coefficient of power of 0.327 and was compatible with a moored AUV. 8 However, most UMPs are moored with an attitude of nose-up and taildown for a stronger stability against the ocean currents. Therefore, a new type of HAOCT is required for the vertically moored UMPs.…”

Section: Introductionmentioning

confidence: 99%

Dynamic modeling of an underwater moored platform equipped with a hydrokinetic energy turbine

Tian

Mao

Song

2018

Advances in Mechanical Engineering

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The limited battery energy restricts the underwater operation duration of the underwater moored platforms. In this article, a horizontal axis ocean current turbine is conceptually designed to produce power for the underwater moored platforms and extend their operational durations. As part of the development of the horizontal axis ocean current turbine, a three-dimensional dynamic model of the system is proposed. The underwater moored platform is modeled as a rigid body with the Newton-Euler method and the cable is modeled with a lumped mass method. Motion simulations are then performed to evaluate the motion performance of the moored system under different operation conditions. The influences of the net buoyancy and the ocean current velocity on the motion of the underwater moored platform are investigated. The simulation results show that the underwater moored platform oscillates in water due to the periodically changed rotor forces. The system has a higher motion stability at a higher net buoyancy, with a smaller horizontal offset and a smaller cable inclination angle. The motion stability of the system also increases with the decreased ocean current velocity.

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Optimum performance of a horizontal axis tidal current turbine: A numerical parametric study and experimental validation

Alipour

Fardian

Tahan

2022

Energy Conversion and Management

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Numerical simulations of a horizontal axis water turbine designed for underwater mooring platforms

Cited by 19 publications

References 12 publications

Noise Characteristics Analysis of the Horizontal Axis Hydrokinetic Turbine Designed for Unmanned Underwater Mooring Platforms

Noise Characteristics Analysis of the Horizontal Axis Hydrokinetic Turbine Designed for Unmanned Underwater Mooring Platforms

Dynamic modeling of an underwater moored platform equipped with a hydrokinetic energy turbine

Optimum performance of a horizontal axis tidal current turbine: A numerical parametric study and experimental validation

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