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DC Field | Value | Language |
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dc.contributor.author | Micallef, Daniel | |
dc.contributor.author | Simao Ferreira, Carlos | |
dc.contributor.author | Sant, Tonio | |
dc.contributor.author | van Bussel, Gerard | |
dc.date.accessioned | 2017-11-21T10:21:57Z | |
dc.date.available | 2017-11-21T10:21:57Z | |
dc.date.issued | 2010-06 | |
dc.identifier.citation | Micallef, D., Simao Ferreira, C., Sant, T., & Van Bussel, G. (2010). An analytical model of wake deflection due to shear flow. In 3rd EWEA Conference-Torque 2010: The Science of making Torque from Wind, Heraklion, Crete, Greece. | en_GB |
dc.identifier.uri | https://www.um.edu.mt/library/oar//handle/123456789/24045 | |
dc.description.abstract | The main motivation behind this work is to create a purely analytical engineering model for wind turbine wake upward deflection due to shear flow, by developing a closed form solution of the velocity field due to an oblique vortex ring. The effectiveness of the model is evaluated by comparing the results with those of a free-wake model. The solution of the velocity field due to an oblique vortex ring is obtained by using the result of an upright ring along with an equivalent point method. The wake model is derived using oblique ring elements with a number of suitable assumptions. Results of wake vertical deflection are compared with a free-wake solution. A linear trend between wake deflection and shear flow exponent is found with both models. The oblique ring model shows some discrepancies from the free-wake result in terms of the dependence of the deflection on the reference tip speed ratio. The oblique ring model needs further refinements and validation with experimental work and is only currently suited for the determination of general wake kinematics. It however provides immediate results for a given input and can be useful in generating databases with wake geometry information. | en_GB |
dc.language.iso | en | en_GB |
dc.publisher | EAWE | en_GB |
dc.rights | info:eu-repo/semantics/openAccess | en_GB |
dc.subject | Horizontal axis wind turbines | en_GB |
dc.subject | Shear flow | en_GB |
dc.subject | Wakes (Aerodynamics) | en_GB |
dc.title | An analytical model of wake deflection due to shear flow | en_GB |
dc.type | conferenceObject | en_GB |
dc.rights.holder | The copyright of this work belongs to the author(s)/publisher. The rights of this work are as defined by the appropriate Copyright Legislation or as modified by any successive legislation. Users may access this work and can make use of the information contained in accordance with the Copyright Legislation provided that the author must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the prior permission of the copyright holder. | en_GB |
dc.bibliographicCitation.conferencename | 3rd EWEA Conference-Torque 2010 : The Science of making Torque from Wind | en_GB |
dc.bibliographicCitation.conferenceplace | Heraklion, Crete, Greece 28-30/06/2010 | en_GB |
dc.description.reviewed | peer-reviewed | en_GB |
Appears in Collections: | Scholarly Works - FacBenED Scholarly Works - FacEngME |
Files in This Item:
File | Description | Size | Format | |
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An analytical model of wake deflection due to shear flow.pdf | 265.36 kB | Adobe PDF | View/Open |
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