Ducted turbine theory with right angled ducts

S McLaren-Gow; P Jamieson; J M R Graham

doi:10.1088/1742-6596/524/1/012083

Ducted turbine theory with right angled ducts

S McLaren-Gow, P Jamieson, J M R Graham

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1 Citation (Scopus)

106 Downloads (Pure)

Abstract

This paper describes the use of an inviscid approach to model a ducted turbine – also known as a diffuser augmented turbine – and a comparison of results with a particular one-dimensional theory. The aim of the investigation was to gain a better understanding of the relationship between a real duct and the ideal diffuser, which is a concept that is developed in the theory. A range of right angled ducts, which have a rim for a 90° exit angle, were modelled. As a result, the performance of right angled ducts has been characterised in inviscid flow. It was concluded that right angled ducts cannot match the performance of their associated ideal diffuser and that the optimum rotor loading for these turbines varies with the duct dimensions.

Original language	English
Article number	01208
Pages (from-to)	1-10
Number of pages	10
Journal	Journal of Physics: Conference Series
Volume	524
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/524/1/012083
Publication status	Published - 17 Jun 2014
Event	The Science of Making Torque from Wind - Technical University of Denmark, Copenhagen, Denmark Duration: 17 Jun 2014 → 20 Jun 2014

Keywords

ducted turbine
inviscid flow
right angled ducts
ideal diffuser

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10.1088/1742-6596/524/1/012083

McLaren-Gow-etal-JOPCS2014-Ducted-turbine-theory-with-right-angled-ductsFinal published version, 1.65 MBLicence: CC BY 4.0

Cite this

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title = "Ducted turbine theory with right angled ducts",

abstract = "This paper describes the use of an inviscid approach to model a ducted turbine – also known as a diffuser augmented turbine – and a comparison of results with a particular one-dimensional theory. The aim of the investigation was to gain a better understanding of the relationship between a real duct and the ideal diffuser, which is a concept that is developed in the theory. A range of right angled ducts, which have a rim for a 90° exit angle, were modelled. As a result, the performance of right angled ducts has been characterised in inviscid flow. It was concluded that right angled ducts cannot match the performance of their associated ideal diffuser and that the optimum rotor loading for these turbines varies with the duct dimensions.",

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AU - Jamieson, P

AU - Graham, J M R

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N2 - This paper describes the use of an inviscid approach to model a ducted turbine – also known as a diffuser augmented turbine – and a comparison of results with a particular one-dimensional theory. The aim of the investigation was to gain a better understanding of the relationship between a real duct and the ideal diffuser, which is a concept that is developed in the theory. A range of right angled ducts, which have a rim for a 90° exit angle, were modelled. As a result, the performance of right angled ducts has been characterised in inviscid flow. It was concluded that right angled ducts cannot match the performance of their associated ideal diffuser and that the optimum rotor loading for these turbines varies with the duct dimensions.

AB - This paper describes the use of an inviscid approach to model a ducted turbine – also known as a diffuser augmented turbine – and a comparison of results with a particular one-dimensional theory. The aim of the investigation was to gain a better understanding of the relationship between a real duct and the ideal diffuser, which is a concept that is developed in the theory. A range of right angled ducts, which have a rim for a 90° exit angle, were modelled. As a result, the performance of right angled ducts has been characterised in inviscid flow. It was concluded that right angled ducts cannot match the performance of their associated ideal diffuser and that the optimum rotor loading for these turbines varies with the duct dimensions.

KW - ducted turbine

KW - inviscid flow

KW - right angled ducts

KW - ideal diffuser

UR - http://iopscience.iop.org/1742-6596/

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T2 - The Science of Making Torque from Wind

Y2 - 17 June 2014 through 20 June 2014

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Ducted turbine theory with right angled ducts

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Doctoral training centre in wind energy systems

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Ducted turbine theory with right angled ducts

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Doctoral training centre in wind energy systems

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