Ducted turbine theory with right angled ducts

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

Research output: Contribution to journalArticlepeer-review

83 Downloads (Pure)


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 languageEnglish
Article number 01208
Pages (from-to)1-10
Number of pages10
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 17 Jun 2014
EventThe Science of Making Torque from Wind - Technical University of Denmark, Copenhagen, Denmark
Duration: 17 Jun 201420 Jun 2014


  • ducted turbine
  • inviscid flow
  • right angled ducts
  • ideal diffuser

Fingerprint Dive into the research topics of 'Ducted turbine theory with right angled ducts'. Together they form a unique fingerprint.

Cite this