... November 20, 2003. Associate Editor: N. Arakere. 09 October 2002 20 November 2003 09 02 2005 acoustic resonance turbogenerators eigenvalues and eigenfunctions rotors High cost pressures and cost savings in our economy have created demands to maximize the efficiency...

... of the acoustic resonances at a range of operating conditions. The main resonant frequencies are to be found around 605 Hz (associated with the plenum) and around 461 Hz and 823 Hz (associated with the combustion chamber), as well as one at around 22 Hz (a bulk mode associated with the system as a whole...

... combustion fuel natural gas technology modelling vibration measurement acoustic resonance Many large industrial gas turbines operating on pre-mixed natural gas suffer from high levels of dynamic pressure or “humming” in the combustion chambers that can sometimes prevent them from reaching full...

... (normally 3 or 4). Typically, tip-timing is used to confirm vibration of assemblies and their derivatives already characterized using strain gauges or when measurements using strain gauges are impractical or untimely. vibration measurement gas turbines testing acoustic resonance strain gauges...