Experimental sensitivity analysis of a linearly stable thermoacoustic system via a pulsed forcing technique

Experimental sensitivity analysis of a linearly stable thermoacoustic system via a pulsed forcing... In this paper, we present the results of an experimental sensitivity analysis on a vertical electrically heated Rijke tube. We examine the shift in linear decay rates and frequencies of thermoacoustic oscillations, with and without control devices. To measure the decay rate, we wait for the system to reach a steady state and then excite it with an acoustic pulse from a loudspeaker. We identify the range of amplitudes over which the amplitude decays exponentially with time. In this range, the rate of change of the amplitude is linearly proportional to the amplitude, and we calculate the constant of proportionality, the linear decay rate, which can be compared with model predictions. The aim of this work is (i) to improve the experimental techniques implemented by Rigas et al. (J Fluid Mech 787, 2016), Jamieson et al. (Int J Spray Combust Dyn, 2016), using a technique inspired by Mejia et al. (Combust Flame 169:287–296, 2016), and (ii) to provide experimental data for future comparison with adjoint-based sensitivity analysis. Our experimental setup is automated and we can obtain thousands of decay rates in 1/12 the time of our previous method. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Experiments in Fluids Springer Journals

Experimental sensitivity analysis of a linearly stable thermoacoustic system via a pulsed forcing technique

Loading next page...
 
/lp/springer_journal/experimental-sensitivity-analysis-of-a-linearly-stable-thermoacoustic-Qy5Tzkdk40
Publisher
Springer Berlin Heidelberg
Copyright
Copyright © 2017 by Springer-Verlag GmbH Germany
Subject
Engineering; Engineering Fluid Dynamics; Fluid- and Aerodynamics; Engineering Thermodynamics, Heat and Mass Transfer
ISSN
0723-4864
eISSN
1432-1114
D.O.I.
10.1007/s00348-017-2402-2
Publisher site
See Article on Publisher Site

Abstract

In this paper, we present the results of an experimental sensitivity analysis on a vertical electrically heated Rijke tube. We examine the shift in linear decay rates and frequencies of thermoacoustic oscillations, with and without control devices. To measure the decay rate, we wait for the system to reach a steady state and then excite it with an acoustic pulse from a loudspeaker. We identify the range of amplitudes over which the amplitude decays exponentially with time. In this range, the rate of change of the amplitude is linearly proportional to the amplitude, and we calculate the constant of proportionality, the linear decay rate, which can be compared with model predictions. The aim of this work is (i) to improve the experimental techniques implemented by Rigas et al. (J Fluid Mech 787, 2016), Jamieson et al. (Int J Spray Combust Dyn, 2016), using a technique inspired by Mejia et al. (Combust Flame 169:287–296, 2016), and (ii) to provide experimental data for future comparison with adjoint-based sensitivity analysis. Our experimental setup is automated and we can obtain thousands of decay rates in 1/12 the time of our previous method.

Journal

Experiments in FluidsSpringer Journals

Published: Aug 19, 2017

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off