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Experimental sensitivity analysis via a secondary heat source in an oscillating thermoacoustic system

Jamieson, Nicholas P. and Rigas, Georgios and Juniper, Matthew P. (2017) Experimental sensitivity analysis via a secondary heat source in an oscillating thermoacoustic system. International Journal of Spray and Combustion Dynamics, 9 (4). pp. 230-240. ISSN 1756-8277. https://resolver.caltech.edu/CaltechAUTHORS:20171130-092301915

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Abstract

In this article, we report the results of an experimental sensitivity analysis on a vertical electrically heated Rijke tube. We examine the stability characteristics of the system due to the introduction of a secondary heat source. The experimental sensitivity analysis is quantified by measuring the shift in linear growth and decay rate as well as the shift in the linear frequency during periods of growth and decay of thermoacoustic oscillations. Linear growth and decay rate measurements agree qualitatively well with the theoretical predictions from adjoint-based methods. A discrepancy in the linear frequency measurements highlight deficiencies in the model used for those predictions and shows that the experimental measurement of sensitivities is a stringent test of any thermoacoustic model. The findings suggest that adjoint-based methods are, in principle, capable of providing industry with a cheap and efficient tool for developing optimal control strategies for more complex thermoacoustic systems.


Item Type:Article
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https://doi.org/10.1177/1756827717696325DOIArticle
http://journals.sagepub.com/doi/10.1177/1756827717696325PublisherArticle
Additional Information:© 2017 The Authors. This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 3.0 License (http://www.creativecommons.org/licenses/by-nc/3.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage). Article first published online: March 28, 2017; Issue published: December 1, 2017. Received: July 29, 2016; Accepted: February 07, 2017. The authors would like to thank L. Magri (Center for Turbulence Research, Stanford University, USA) for invaluable discussions and comments on this work. The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article. The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: European Research Council through Project ALORS 2590620.
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Funding AgencyGrant Number
European Research Council (ERC)ALORS 2590620
Subject Keywords:Acoustics, flow control, instability control
Issue or Number:4
Record Number:CaltechAUTHORS:20171130-092301915
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20171130-092301915
Official Citation:Experimental sensitivity analysis via a secondary heat source in an oscillating thermoacoustic system. Nicholas P Jamieson, Georgios Rigas, Matthew P Juniper. International Journal of Spray and Combustion Dynamics. Vol 9, Issue 4, pp. 230 - 240. First Published March 28, 2017. https://doi.org/10.1177/1756827717696325
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:83590
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:30 Nov 2017 17:32
Last Modified:03 Oct 2019 19:08

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