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On the effect of the rotor geometry on the formation and the development of its wake
This item is provided by the institution :
National Technical University of Athens
Repository :
Digital Library of National Technical University of Athens | Dspace@NTUA
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Semantic enrichment by EKT
ΕΚΤ item type
Journal part
(EN)
Scientific article
(EN)
EKT year
1992
(EN)
EKT historical period
Title
On the effect of the rotor geometry on the formation and the development of its wake (EN)
Creator
Zervos, A (EN)
Rados, KG (EN)
Voutsinas, SG (EN)
Description
In order to formulate more accurate simple models, the traditional kinematic models should be enriched. Retaining the similarity of the flow in the far-wake region, enrichment can be introduced through machine-dependent far-field profiles. In the present paper this is accomplished by coupling a linear vortex model with a k-ε{lunate} viscous one, for the analysis of the near-wake region. The far-field profiles are then obtained through matching across the inlet plane of the far-wake region selected at an axial distance of approximately 3-4 diameters. The use of a vortex method for the evaluation of the velocity profiles just downstream the rotor gives an account of the effect of the rotor geometry. As a result the far-wake self-similar velocity profiles are no longer depending on only one parameter, i.e. the initial deficit. Instead they depend on the circulation distribution defined by means of the vortex model. Thus this approach can be termed as a multi-parametric wake modelling. © 1992. (EN)
Type
journalArticle (EN)
Subject
Rotors (EN)
Aerodynamics--Wakes (EN)
Kappa-Epsilon Models (EN)
Velocity Profiles (EN)
Vortex Methods (EN)
Geometry (EN)
Rotors--Aerodynamics (EN)
Near Wake Regions (EN)
Engineering, Civil (EN)
Mechanics (EN)
Wakes (EN)
Modelling (EN)
Aerodynamics--Mathematical Models (EN)
Wind Turbines (EN)
Rotor Geometry (EN)
Provider
National Technical University of Athens
Repository / collection
Digital Library of National Technical University of Athens | Dspace@NTUA
Subcollections
Κεντρική Βιβλιοθήκη Ε.Μ.Π.
Ιδρυματικό Αποθετήριο
Δημοσιεύσεις μελών Δ.Ε.Π. σε περιοδικά
Journal
Journal of Wind Engineering and Industrial Aerodynamics (EN)
Language
English
Issued
1992 (EN)
Identifier
http://hdl.handle.net/123456789/10761
ISI:A1992JD99700028 (EN)
39 (EN)
0167-6105 (EN)
1-3 (EN)
291 (EN)
283 (EN)
Publisher
ELSEVIER SCIENCE BV (EN)
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