Journal
ENERGY
Volume 116, Issue -, Pages 583-591Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2016.09.107
Keywords
Wind turbine; Wake flow; Particle random walk
Categories
Funding
- Program for Young Excellent Talents in Tongji University [2014KJ025]
- National Science Foundation of China [51406136]
- International Science and Technology Cooperation Program of China [2011DFG13020]
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This paper presents a novel way of simulating the effect of velocity decay and turbulence of wind turbine's wake flow. By decoupling the solving of wake flow from that of the velocity field, the proposed model treats the wake flow intensity as a kind of convective and diffusive virtual Matter. The particle random walk method is utilized to simulate the motion of the virtual matter. Comparing to the existing linear model for turbine wake flow, the proposed model can predict the distributions of velocity decay and turbulence of wake flow in a non-uniform flow field above complex terrain. Experimental data from wind tunnel and real wind farm is used to validate the model, demonstrating its effectiveness on estimating the velocity decay and the turbulence intensity, and additionally, the power yield of a wind farm. The model proposed in this paper can be integrated into algorithms for numerical assessment and micro-siting optimization of wind farms on complex terrains. (C) 2016 Elsevier Ltd. All rights reserved.
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