Computerized Analysis of Dynamic Pressure Exchanger Scavenge Processes

Abstract

The present work supplements a previous analysis by Azoury of the basic wave processes in a d.p.e. (dynamic pressure exchanger) cell. A hybrid computerized method of integrating the differential equations of unsteady one-dimensional ideal gas flow is used to analyse the component scavenge processes of the d.p.e. in a looped arrangement. These processes are employed to investigate the effect of the relative nature of the interacting gases on d.p.e. performance. A criterion of high performance is proposed in terms of the overall strength of the interface between the gases and their relative specific heat ratios. The criterion gives good agreement with theory when tested with experimental results obtained on two d.p.e. test units.

Numerical Simulation of Unsteady-Flow Processes in Wave Rotors

“…It utilized novel features to ensure solutions free from instabilities and physical improbabilities, as reported by Azoury [36]. Based on this numerical model, a computer program was developed by Jonsson [46], and it was successfully applied to pressure exchangers [47][48][49].…”