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Your search keyword '"Omar, Imine"' showing total 3 results
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3 results on '"Omar, Imine"'

2. Comparison between two performance calculation methods applied for vawt

Author

Mahdi Goucem, Mahi Senouci, and Omar Imine

Subjects
Renewable Energy, Sustainability and the Environment, Mechanical Engineering, General Engineering, Transportation, Safety, Risk, Reliability and Quality, Civil and Structural Engineering
Abstract

This paper presents a new model of 2D performance calculation applied to VAWT. The idea consist in considering only one blade to which a rotational oscillation motion is gave. Hence, the effect of the machine rotation and the influence of the rest of the machine on the focused blade are modelled. The study is purely numerical based upon the use of ANSYS-Fluent code to solve unsteady RANS equations, which follow from the new model. Several 2D geometry configurations of Darrieus machine were tested using the new approach and the results are compared to ones applied to the whole 2D rotor. A quasi concordance of the results is noticed for the overall predictions done from the two CFD methods. Although computational time is lower for the new model, tests reveal inadequate prediction of the peak's power coefficient and its Tip Speed Ratio value.

Published
2022
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3. A numerical investigation of a new horizontal wind turbine performance for rural use.

Author

Akram, Adjlout, Omar, Ladjedel, Tayeb, Yahiaoui, Šikula, Ondřej, Omar, Imine, and Lahouari, Adjlout

Subjects
*HORIZONTAL axis wind turbines, *WIND turbine blades, *FINITE volume method, *WIND turbines, *SHEARING force
Abstract

In this paper, a new configuration of a horizontal axis wind turbine with three blades for domestic electricity production on farms was numerically simulated. Three configurations were tested numerically: a standard single-blade wind turbine (STWT), a single wind turbine (SWT), and a tandem three-blade wind turbine (TWT) for rural use. For the tandem wind turbine, the effects of pitch angle and the distance between the blades were also investigated. The Gambit and Fluent 19.2 codes were, respectively, used to generate different meshes and determine various parameters. The resolution of the averaged Navier–Stokes equations (RANS) using a finite volume method was conducted. The k–ε realizable two-equation model was chosen for turbulence calculation. The obtained results showed that the maximum power coefficient (Cp) was 0.444 for one of the tandem configurations (TWT), compared to the conventional blade (STWT). The maximum Cp obtained in this study is slightly greater than the experimental results found in the literature. It has also been observed that the flow on these new turbines exhibits a complex phenomenon on both surfaces. [ABSTRACT FROM AUTHOR]

Published
2024
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