Loading…
This event has ended. Visit the official site or create your own event on Sched.
Welcome to ICSV26!
Back To Schedule
Thursday, July 11 • 11:20 - 11:40
THERMOACOUSTIC RESPONSE OF HEAT EXCHANGER TUBES IN FUTURE AERO-PROPULSION ENGINES

Log in to save this to your schedule, view media, leave feedback and see who's attending!

Feedback form is now closed.
Cylindrical heat exchanger tubes can act as active or passive acoustic elements that influence the thermoacoustic stability of combustion systems. They can act as both unsteady heat sinks and acoustic dampers. The present work is motivated by heat exchangers in future aero-propulsion engines. One significant difference to heat exchanger tubes in domestic boiler systems is that rather than being tightly spaced, their spacing is likely to be of the same order as their diameter. The heat transfer behaviour can change depending on the tube spacing. The contributions of this work are twofold. Firstly, to build acoustic scattering models for heat sinks and simple area jump conditions, and secondly, to include them in 1D network models to study the influence of the spatial positioning of these models within the network. Preliminary results indicate that there is significant variation in the thermoacoustic behaviour if one were to consider an approximated model with a heat sink followed by an area jump, as compared to the one where an area jump is followed by a heat sink.

Moderators
MH

Maria Heckl

Professor, Keele University

Authors

Thursday July 11, 2019 11:20 - 11:40 EDT
Outremont 5
  T03 Aero… aircrft noise & vibr., SS03 Combust noise & thermoac