Numerical Investigation of Aerodynamic Performance and Loads of a Novel Dual Rotor Wind Turbine

dc.contributor.author Moghadassian, Benham
dc.contributor.author Rosenberg, Aaron
dc.contributor.author Sharma, Anupam
dc.contributor.author Sharma, Anupam
dc.contributor.department Aerospace Engineering
dc.date 2018-02-17T22:30:13.000
dc.date.accessioned 2020-06-29T22:46:12Z
dc.date.available 2020-06-29T22:46:12Z
dc.date.copyright Fri Jan 01 00:00:00 UTC 2016
dc.date.issued 2016-07-21
dc.description.abstract <p>The objective of this paper is to numerically investigate the effects of the atmospheric boundary layer on the aerodynamic performance and loads of a novel dual-rotor wind turbine (DRWT). Large eddy simulations are carried out with the turbines operating in the atmospheric boundary layer (ABL) and in a uniform inflow. Two stability conditions corresponding to neutral and slightly stable atmospheres are investigated. The turbines are modeled using the actuator line method where the rotor blades are modeled as body forces. Comparisons are drawn between the DRWT and a comparable conventional single-rotor wind turbine (SRWT) to assess changes in aerodynamic efficiency and loads, as well as wake mixing and momentum and kinetic energy entrainment into the turbine wake layer. The results show that the DRWT improves isolated turbine aerodynamic performance by about 5%–6%. The DRWT also enhances turbulent axial momentum entrainment by about 3.3" role="presentation" style="box-sizing: inherit; display: inline; line-height: normal; text-align: left; word-spacing: normal; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;">3.3 %. The highest entrainment is observed in the neutral stability case when the turbulence in the ABL is moderately high. Aerodynamic loads for the DRWT, measured as out-of-plane blade root bending moment, are marginally reduced. Spectral analyses of ABL cases show peaks in unsteady loads at the rotor passing frequency and its harmonics for both rotors of the DRWT.</p>
dc.description.comments <p>This article is from <em>Energies</em> <strong>2016</strong>, <em>9</em>(7), 571; doi:<a href="http://dx.doi.org/10.3390/en9070571">10.3390/en9070571</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/aere_pubs/71/
dc.identifier.articleid 1070
dc.identifier.contextkey 9218089
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath aere_pubs/71
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/2074
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/aere_pubs/71/2016_Moghadassian_NumericalInvestigation.pdf|||Sat Jan 15 01:42:16 UTC 2022
dc.source.uri 10.3390/en9070571
dc.subject.disciplines Aerospace Engineering
dc.subject.keywords Dual-rotor wind turbines
dc.subject.keywords Momentum entrainment
dc.subject.keywords Aerodynamic loads
dc.subject.keywords Atmospheric boundary layer
dc.title Numerical Investigation of Aerodynamic Performance and Loads of a Novel Dual Rotor Wind Turbine
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
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