The Development of Duct for a Horizontal Axis Turbine Using CFD

Ghani, Mohamad Pauzi Abdul; Yaacob, Omar; Aziz, Azliza Abdul

doi:10.1063/1.3464943

Cited by 2 publications

(3 citation statements)

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“…In a duct, the incoming fluid area is reduced, and therefore, its velocity is augmented by virtue of mass conservation [8]. As a result, the turbine turns faster reducing also the starting torque [59]. Ducted turbines have been far less studied than those in an isolated configuration; therefore, the analysis of its design, performance and survivability is needed [8,11].…”

Section: Ducted Turbinesmentioning

confidence: 99%

“…From a structural point of view, the employ of an enclosure eases the turbine installation in the river bed and serves also as a housing for the components of the turbine generator. Following [59], according to the experiences collected at several countries, this kind of turbines starts to produce energy when the average stream velocity is around 2 m/s.…”

Section: Ducted Turbinesmentioning

confidence: 99%

“…The CFD simulations of a horizontal axis ducted turbine in operation in the Malaysian ocean were reported in [59]. The rotor consisted of five blades with a diameter of 10 m, and the duct had a length of 25 m and a diameter of 25 m. Simulations were carried out for a submergence depth of 40 m, incident fluid speed 0.57 m/s and a very low turbulence intensity of 0.1%.…”

Section: Ducted Turbinesmentioning

confidence: 99%

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A review on computational fluid dynamics modeling and simulation of horizontal axis hydrokinetic turbines

Laı́n

Contreras

López

2019

J Braz. Soc. Mech. Sci. Eng.

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Hydrokinetic energy conversion devices provide the facility to capture energy from water flow without the need of large dams, impoundments, channels or deviation of the water as in conventional hydroelectric centrals. Hydrokinetic systems are intended to be used in streams, either natural (rivers, estuaries, marine currents) or artificially built channels. This article reviews the advances made over the last 10-15 years regarding the three-dimensional computational fluid dynamics modeling and simulation of this type of turbines. Technical aspects of model design, employed boundary conditions, solution of the governing equations of the water flow through the hydrokinetic turbine and assumptions made during the simulations are thoroughly described. We hope that this review will encourage new computational investigations about hydrokinetic turbines that contribute to their continuous improvement, development and implementation aimed to sustainable use of water resources and addressed to solve the problem of lack of electricity supply in small, isolated populations. Keywords CFD • Hydrokinetic turbine • Simulation • Horizontal axis turbine • Axial flow water turbine List of symbols A Cross-sectional area of the rotor (m 2) A ∞ Water area upstream the turbine (m 2) A d Actuator disk area (m 2) A disk Disk area (m 2) A exit Diffuser exit area (m 2) A w Water area downstream the turbine (m 2) a Axial flow induction factor

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