Ilori, OM, Mao, X and Jaworski, AJ (2015) CFD study of oscillatory flow through 90º bends of thermoacoustic devices. In: Proceedings of ICR2015. ICR2015 : The 24th IIR International Congress of Refrigeration, 16-22 Aug 2015, Yokohama, Japan. International Institute of Refrigeration
Abstract
Numerical simulation is performed to investigate oscillatory flow through 90º bends of a thermoacoustic system. Bends are often used in thermoacoustic systems as parts of acoustic networks. In the feedback loop, geometrical changes can cause system losses and it is often important to find optimal bend curvature radius that keeps the losses to the minimum. This paper investigates the effects of radius of curvature on the properties of the acoustic wave propagating through 90º bends, using 3D Computational Fluid Dynamics (CFD) simulation approach. Oscillatory flow phenomena are investigated using RANS method with SST k-ω turbulent model. Two curvature radii are considered with the drive ratio of acoustic excitation up to 0.65%. The simulation results are analysed with respect to the acoustic Dean Number and the associated flow phenomena causing losses in the bend are described. The results suggest an interesting lead that is worthy of further investigation.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | This is an author produced version of a paper published in Proceedings of ICR 2015. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) > Energy Research Institute (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 21 Dec 2015 16:56 |
Last Modified: | 15 Jan 2018 18:45 |
Status: | Published |
Publisher: | International Institute of Refrigeration |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:93003 |