Print Email Facebook Twitter Surrogate based wind farm layout optimization using manifold mapping Title Surrogate based wind farm layout optimization using manifold mapping Author Kaja Kamaludeen, Shaafi M. (TU Delft Aerodynamics) van Zuijlen, A.H. (TU Delft Aerodynamics) Bijl, H. (TU Delft Aerospace Engineering) Faculty Aerospace Engineering Date 2016-10-03 Abstract High computational cost associated with the high fidelity wake models such as RANS or LES serves as a primary bottleneck to perform a direct high fidelity wind farm layout optimization (WFLO) using accurate CFD based wake models. Therefore, a surrogate based multi-fidelity WFLO methodology (SWFLO) is proposed. The surrogate model is built using an SBO method referred as manifold mapping (MM). As a verification, optimization of spacing between two staggered wind turbines was performed using the proposed surrogate based methodology and the performance was compared with that of direct optimization using high fidelity model. Significant reduction in computational cost was achieved using MM: a maximum computational cost reduction of 65%, while arriving at the same optima as that of direct high fidelity optimization. The similarity between the response of models, the number of mapping points and its position, highly influences the computational efficiency of the proposed method. As a proof of concept, realistic WFLO of a small 7-turbine wind farm is performed using the proposed surrogate based methodology. Two variants of Jensen wake model with different decay coefficients were used as the fine and coarse model. The proposed SWFLO method arrived at the same optima as that of the fine model with very less number of fine model simulations. To reference this document use: http://resolver.tudelft.nl/uuid:0d6b7cb5-c9c3-4f5c-84c9-38401ad57206 DOI https://doi.org/10.1088/1742-6596/753/9/092005 ISSN 1742-6588 Source Journal of Physics: Conference Series, 753 (9) Part of collection Institutional Repository Document type journal article Rights © 2016 Shaafi M. Kaja Kamaludeen, A.H. van Zuijlen, H. Bijl Files PDF pdf.pdf 2.54 MB Close viewer /islandora/object/uuid:0d6b7cb5-c9c3-4f5c-84c9-38401ad57206/datastream/OBJ/view