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TU Berlin

Inhalt des Dokuments

Experimental characterization and modelling of acoustic dampers

Topic

Acoustic pressure oscillations can arise in combustors due to thermoacoustic instabilities. If the amplitude of these oscillations becomes too high, they can cause structural damage to the combustor. Therefore, they need to be damped. A common approach for the damping of pressure oscillation in a cavity is to attach acoustic dampers to it, also known as Helmholtz dampers. We are hiring a student (40 hours per month, for 4 months) to: 

  • Characterize experimentally the nonlinear acoustic impedance of Helmholtz dampers
  • Model the acoustic impedance of Helmholtz dampers using existing models and compare them to experimental data
  • Find the best placement of multiple dampers in a cavity

 

Profile

We are looking for a student in mechanical engineering or similar subject, with an interest for experimental work and modelling of acoustic phenomena. You will be collaborating with PhD candidates and PostDocs at the Institute of Fluid Mechanics and Technical Acoustics, and learning state of the art methods for the measurements and modeling of acoustic impedances. Ideally, you already had some experience with Labview and/or Matlab. To apply, please send a CV and letter of motivation to the contacts below.

 

Contacts

Dr. Alessandro Orchini (a.orchini@tu-berlin.de)

Sylvain Humbert (sylvain.humbert(at)tu-berlin.de)

 

 

Zusatzinformationen / Extras