Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/124788
Type: | Conference paper |
Title: | The effect of aspect ratio on the flow characteristics of a Hybrid Solar Receiver Combustor |
Author: | Long, S. Lau, T. Chinnici, A. Tian, Z. Dally, B. Nathan, G. |
Citation: | Proceedings of the 21st Australasian Fluid Mechanics Conference (AFMC 2018), 2018, pp.1-4 |
Publisher: | Australian Fluid Mechanics Society |
Issue Date: | 2018 |
ISBN: | 9780646597843 |
Conference Name: | 21st Australasian Fluid Mechanics Conference (10 Dec 2018 - 13 Dec 2018 : Adelaide, Australia) |
Statement of Responsibility: | S. Long, T.C.W. Lau, A. Chinnici, Z.F. Tian, B.B. Dally, G.J. Nathan |
Abstract: | We present a systematic experimental study of the interaction between four rotationally-symmetric jets within a cylindrical chamber, under conditions relevant to a wide range of practical applications, including the Hybrid Solar Receiver Combustor (HSRC). The HSRC geometry is simplified here to a cylindrical cavity with four inlet jets (representing four burners), which are configured in an annular arrangement and aligned at an inclination angle (αj) to the axis with a tangential component (azimuthal angle θj) to generate a swirl in the chamber. In this study, we assess the configurations of αj = 25° and θj = 5°. The length of the chamber was varied from Lc = 148 mm to 74 mm and the diameter of the chamber was Dc = 74 mm, resulting in an aspect ratio of Lc/Dc = 2, 1.5 and 1. The inlet Reynolds number for each injected jet and the number of jets were fixed at ReD = 10,500 and 4, respectively. Velocity data obtained with Particle Image Velocimetry (PIV) were used to characterise the large-scale flow field within the selected experimental configurations. The results reveal a significant dependence of the mean flow-field on the aspect ratio Lc/Dc for the value of αj and θj considered here. More specifically, it was found that Lc/Dc can influence the position of the external recirculation zone (ERZ), the strength of the central resulting jet, and the recirculation rate (Kv). |
Rights: | Commencing with 19AFMC, the Society holds copyright to papers which appear in the Proceedings. Prior to that, copyright resides with authors of the papers. |
Grant ID: | http://purl.org/au-research/grants/arc/LP110200060 |
Published version: | https://people.eng.unimelb.edu.au/imarusic/proceedings/21%20AFMC%20TOC.html |
Appears in Collections: | Aurora harvest 8 Mechanical Engineering conference papers |
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