Analysis of a lumped parameter pulse combustor model incorporating convective and radiative heat transfer

  • Frederick Bloom Northern Illinois University
  • Olga Terlyga Fermi National Laboratory

Abstract

A perturbation analysis is developed for a lumped parameter
model of pulse combustor operation; the model incorporates heat loss due
to both convective and radiative heat transfer.  For the special case in
which only convective heat loss is taken into account, it is shown that
as the convective heat transfer coefficient associated with the combustion
chamber walls decreases the amplitude of the pressure oscillations in the
chamber, at fixed wall temperatures, increases monotonically.  It is also
demonstrated that, while changes in wall temperature do not affect the
chamber pressure oscillations, they do substantially impact the velocity
oscillations of the combustion products in the pulse combustor tailpipe.

Published
2012-12-24
Section
Articles