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Proceedings of CHT-15. 6th International Symposium on ADVANCES IN COMPUTATIONAL HEAT TRANSFER
May, 25-29, 2015, Rutgers University, New Brunswick, NJ, USA

DOI: 10.1615/ICHMT.2015.IntSympAdvComputHeatTransf


ISBN Print: 978-1-56700-429-8

ISSN: 2578-5486

NUMERICAL SIMULATON OF A DARRIEUS TURBINE

pages 1338-1345
DOI: 10.1615/ICHMT.2015.IntSympAdvComputHeatTransf.1280
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ABSTRAKT

This paper presents a numerical investigation on a new configuration of a vertical axis wind turbine (Darrieus type). The concept proposed is defined as a tandem straight-bladed turbine. The simulations have been performed using Fluent code. Sliding mesh technique was applied to treat the unsteady character of the flow. A time step size corresponding to ϑ = 3.6° has been chosen. The turbulence model used for calculations is the one-equation Spalart-Allmaras model. The numerical investigation was validated through the comparison of the calculations for a two-bladed turbine and a conventional three-bladed turbine with experimental cases found in the literature. The results obtained with the 2D numerical simulation of the proposed H-rotor present a reasonable improvement in the performance. The gain in power is about 35 % compared to the conventional three straight-bladed turbine.

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