Dynamic characterization of an industrial burner in working conditions by laser Doppler vibrometry

Nicola Paone; Gian Marco Revel

doi:10.1117/12.307724

1 June 1998 Dynamic characterization of an industrial burner in working conditions by laser Doppler vibrometry

Nicola Paone, Gian Marco Revel

Proceedings Volume 3411, Third International Conference on Vibration Measurements by Laser Techniques: Advances and Applications; (1998) https://doi.org/10.1117/12.307724
Event: Third International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, 1998, Ancona, Italy

Abstract

The paper presents the application of a laser Doppler vibrometer in order to characterize the dynamic behavior of a burner during normal working conditions. The burner is a 1:4 scale model of a real CH₄ industrial burner for gas turbines, with a 120 kW power. A first series of test has been performed in order to determine the resonance frequencies of burner components, in such a way as to correlate the results achieved in working conditions with the characteristics of the structure. In a second series of tests the burner has been tested in exercise, firstly with only a cold jet of air flowing from the nozzle, then in real working conditions. In each test both vibration and acoustic measurements have been performed, in order to find correlation between combustion noise and structural vibrations. The laser Doppler vibrometer has been chosen to carry out measurements on the burner because of its capability of 'remotely' and non-intrusively determine vibrations. In order to assess the accuracy of vibrometer measurements through the flame, a theoretical model previously developed by the authors has been employed, which describes the interactions between laser interferometer and refractive index variations induced by the flame, in such a way as to estimate interfering and modifying inputs of the measurements system.

Citation Download Citation

Nicola Paone and Gian Marco Revel "Dynamic characterization of an industrial burner in working conditions by laser Doppler vibrometry", Proc. SPIE 3411, Third International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (1 June 1998); https://doi.org/10.1117/12.307724

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available