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CFD simulation of the thermal behavior of a wind mill power generator nacelle

DOI: 10.1615/ICHMT.2009.TurbulHeatMassTransf.1130
12 pages

G. Colomer
Termo Fluids S.L, Centre Tecnològic de Transferència de Calor (CTTC), Lab. Termotècnia i Energètica, Universitat Politècnica de Catalunya (UPC), C/Colom, 11, E08222 Terrassa, Spain

O. Lehmkuhl
Heat and Mass Transfer Technological Center, Polytechnical University of Catalonia (UPC) Colom11, 08222, Terrassa, Barcelona, Spain; Termo Fluids, S.L., Magi Colet, 8, 08204 Sabadell (Barcelona), Spain

R. Borrell
Heat and Mass Transfer Technological Center (CTTC), Universitat Politecnica de Catalunya, Colom 11 08222 Terrassa, Spain; TermoFluids S.L, Av. Jacquard 97 08222, Barcelona, Spain

Assensi Oliva
Centre Tecnologic de Transferencia de Calor (CTTC), Universitat Politecnica de Catalunya (UPC), Colom 11, 08222 Terrassa, Barcelona, Spain

Sinopsis

In this work we use the Large Eddy Simulation model to predict the thermal behavior of the air inside of a wind generator nacelle, where several elements with different thermal characteristics are found. Outside air enters into the domain at high speed (40 m/s), thus making the flow turbulent. Given the complexity of the flow (forced and natural convection in the same domain) time-averaged models were not considered. A time explicit solver for all the variables except the pressure is used, and the velocity-pressure coupling is performed with a fractional step method. The significant results are the averaged temperatures on the different parts of the domain.

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