A Computational Method For Pressure Wave
Machinery To Internal Combustion Engines
And Gas Turbines
Author(s)
A. Fatsis, M. Gr. Vrachopoulos, S. Mavrommatis,
A. Panoutsopoulou & F. Layrenti
Abstract
Pressure wave machinery constitutes promising devices in various engineering
propulsion applications such as superchargers in automobile engines and topping
devices in gas turbines. This article presents applications of a numerical model
for the flow field prediction inside wave rotors. The numerical method used
consists of an approximate Roe solver that takes into account viscous and
thermal losses inside the rotor as well as leakage losses at the extremities of the
rotor. The model is extensively validated and then is applied on configurations
suited for automobile engine supercharging and for topping devices for gas
turbines. For both cases, satisfactory results are obtained by the comparison of
the numerical predictions against experimental data available in the literature. It
is concluded that the present method can accurately predict the basic unsteady
flow patterns inside the rotor.
Keywords: pressure wave supercharger, wave rotor, internal combustion
engine, gas turbine, unsteady flow.
1 Introduction
Pressure wave superchargers or wave rotors or Comprex® are rotating devices in
which energy is transferred between two gaseous fluids by short time direct
contact of the fluids in slender flow channels. They are composed of two
concentric cylinders between which, radial straight planes are arranged giving
Keywords
pressure wave supercharger, wave rotor, internal combustion
engine, gas turbine, unsteady flow.
Related Book
Other papers in this volume
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