A Prescribed-Wake Vortex Lattice Method for Preliminary Design of Co-Axial, Dual-Rotor Wind Turbines

dc.contributor.author Rosenberg, Aaron
dc.contributor.author Sharma, Anupam
dc.contributor.author Sharma, Anupam
dc.contributor.department Aerospace Engineering
dc.date 2020-12-22T04:26:08.000
dc.date.accessioned 2021-02-24T18:29:26Z
dc.date.available 2021-02-24T18:29:26Z
dc.date.copyright Fri Jan 01 00:00:00 UTC 2016
dc.date.issued 2016-12-01
dc.description.abstract <p>This paper extends the prescribed-wake vortex lattice method (VLM) to perform aerodynamic analysis of dual-rotor wind turbines (DRWTs). A DRWT turbine consists of a large, primary rotor placed co-axially behind a smaller, secondary rotor. The additional vortex system introduced by the secondary rotor of a DRWT is modeled while taking into account the singularities that can occur when the trailing vortices from the secondary (upstream) rotor interact with the bound vortices of the main (downstream) rotor. Pseudo-steady assumption is invoked, and averaging over multiple relative rotor positions is performed to account for the primary and secondary rotors operating at different rotational velocities. The VLM solver is first validated against experiments and blade element momentum theory results for a conventional, single-rotor turbine. The solver is then verified for two DRWT designs against results from two computational fluid dynamics (CFD) methods: (1) Reynolds-averaged Navier–Stokes CFD with an actuator disk representation of the turbine rotors and (2) large-eddy simulations with an actuator line model. Radial distributions of sectional torque force and angle of attack show reasonable agreement between the three methods. Results of parametric sweeps performed using VLM agree qualitatively with the Reynolds-averaged Navier–Stokes (RANS) CFD results demonstrating that the proposed VLM can be used to guide preliminary design of DRWTs.</p>
dc.description.comments <p>This is a manuscript of an article published as Rosenberg, Aaron, and Anupam Sharma. "A prescribed-wake vortex lattice method for preliminary design of co-axial, dual-rotor wind turbines." <em>Journal of Solar Energy Engineering</em> 138, no. 6 (2016): 061002. DOI: <a href="https://doi.org/10.1115/1.4034350" target="_blank">10.1115/1.4034350</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/aere_pubs/177/
dc.identifier.articleid 1178
dc.identifier.contextkey 20748551
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath aere_pubs/177
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/93030
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/aere_pubs/177/0-SharmaAnupam_PermGrant_PrescribedWakeVortex_ASME.pdf|||Fri Jan 14 21:27:43 UTC 2022
dc.source.bitstream archive/lib.dr.iastate.edu/aere_pubs/177/2016_SharmaAnupam_PrescribedWakeVortex.pdf|||Fri Jan 14 21:27:44 UTC 2022
dc.source.uri 10.1115/1.4034350
dc.subject.disciplines Aerodynamics and Fluid Mechanics
dc.subject.disciplines Aerospace Engineering
dc.subject.keywords Wind turbine
dc.title A Prescribed-Wake Vortex Lattice Method for Preliminary Design of Co-Axial, Dual-Rotor Wind Turbines
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 9797e35d-08ee-41c7-8982-c83e6db2ed8e
relation.isOrgUnitOfPublication 047b23ca-7bd7-4194-b084-c4181d33d95d
Original bundle
Now showing 1 - 2 of 2
No Thumbnail Available
3.9 MB
Adobe Portable Document Format
No Thumbnail Available
164.38 KB
Adobe Portable Document Format