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Harmonic balance Navier-Stokes analysis of tidal stream turbine wave loads

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Publication date1/03/2019
Host publicationRecent Advances in CFD for Wind and​ Tidal Offshore Turbines: Springer Tracts in Mechanical Engineering
EditorsEsteban Ferrer, Adeline de Montflaur
Place of PublicationCham
PublisherSpringer International Publishing
Number of pages13
Edition2nd ed.
ISBN (electronic)9783030118877
ISBN (print)9783030118860
<mark>Original language</mark>English

Publication series

NameSpringer Tracts in Mechanical Engineering


ARCTIC, a novel incompressible Reynolds–averaged Navier–Stokes finite volume code for the hydrodynamic analysis of open rotor unsteady loads is presented. One of its unique features is a harmonic balance solver enabling high–fidelity analyses of turbine periodic hydrodynamic loads with runtimes reduced by more than one order of magnitude over conventional time–domain CFD, and with negligible accuracy penalty. The strength of the new technology is demonstrated by analyzing with both harmonic balance and time–domain solvers the load fluctuations of a realistic tidal stream turbine. Such fluctuations are caused by a harmonic perturbation of the freestream velocity similar to that due to surface gravity waves.