An experimental investigation of the nonlinear acoustic response of acoustic sense-ports

2017 ◽  
Vol 142 (4) ◽  
pp. 2489-2489
Author(s):  
Thomas W. Teasley ◽  
David Scarborough
Keyword(s):  
Experimental Investigation ◽  
Acoustic Response ◽  
Nonlinear Acoustic

Determination of Thermoacoustic Response in a Demonstrator Gas Turbine Engine

2000 ◽  
Author(s):  
C. A. Arana ◽  
B. Sekar ◽  
M. A. Mawid
Keyword(s):  
Experimental Investigation ◽  
Gas Turbine ◽  
Analytical Model ◽  
Pressure Fluctuations ◽  
Gas Turbine Engine ◽  
Area Ratio ◽  
Fuel Injector ◽  
Acoustic Response ◽  
Turbine Engine ◽  
Discharge Area

This paper describes an analytical and experimental investigation to obtain the thermoacoustic response of a demonstrator gas turbine engine combustor. The combustor acoustic response for two different fuel injector design configurations was measured. It was found that the combustor maximum peak to peak pressure fluctuations were 0.6 psi to 2 psi for configuration A and B respectively. Based on the measured acoustic response, another experimental investigation was conducted to identify the design features in configuration B that caused the increase in the acoustic response. The data showed that by changing the fuel injector swirler’s vane to inner passage discharge area ratio, the engine acoustic response could be lowered to an acceptable level. A simplified analytical model based on the lumped-parameter approach was then developed to investigate the effect of geometrical changes upon the engine response. The analytical model predicted the fuel injector/swirlers acoustic response as a function of the swirlers inner passage discharge area ratio and frequency. The predictions were consistent with the experimental observations, in particular, it was predicted that as the area ratio was increased, the system reactance was decreased and as a result the system changed from a damping to an amplifying system.

Numerical and experimental investigation on vibro-acoustic response of a shaft-hull system

2016 ◽  
Vol 71 ◽  
pp. 129-139 ◽  
Author(s):  
Chenyang Li ◽  
Jian Wang ◽  
Yegao Qu ◽  
Zhiyi Zhang ◽  
Hongxing Hua
Keyword(s):  
Experimental Investigation ◽  
Acoustic Response

The stable nonlinear acoustic response of free-floating lipid-coated microbubbles

2014 ◽  
Vol 135 (4) ◽  
pp. 2310-2311
Author(s):  
Ying Luan ◽  
Guillaume Renaud ◽  
Tom Kokhuis ◽  
Antonius van der Steen ◽  
Nico de Jong
Keyword(s):  
Acoustic Response ◽  
Nonlinear Acoustic
Sign in / Sign up

Export Citation Format

Share Document