The Efficiency of a Pulsed Detonation Combustor-Axial Turbine Integration
Journal article, 2018

The paper presents a detailed numerical investigation of a pulsed detonation combustor (PDC) coupled with a transonic axial turbine stage. The time-resolved numerical analysis includes detailed chemistry to replicate detonation combustion in a stoichiometric hydrogen–air mixture, and it is fully coupled with the turbine stage flow simulation. The PDC–turbine performance and flow variations are analyzed for different power input conditions, by varying the system purge fraction. Such analysis allows for the establishment of cycle averaged performance data and also to identify key unsteady gas dynamic interactions occurring in the system. The results obtained allow for a better insight on the source and effect of different loss mechanisms occurring in the coupled PDC–turbine system. One key aspect arises from the interaction between the non-stationary PDC outflow and the constant rotor blade speed. Such interaction results in pronounced variations of rotor incidence angle, penalizing the turbine efficiency and capability of generating a quasi-steady shaft torque.

Combustion chambers

specific impulse

Detonation waves

Author

Carlos Xisto

Chalmers, Mechanics and Maritime Sciences, Fluid Dynamics

Olivier Petit

Chalmers, Mechanics and Maritime Sciences, Fluid Dynamics

Tomas Grönstedt

Chalmers, Mechanics and Maritime Sciences, Fluid Dynamics

Andrew Rolt

Cranfield University

Anders Lundbladh

GKN Aerospace Sweden

Chalmers, Mechanics and Maritime Sciences

Guillermo Paniagua

Purdue University

Aerospace Science and Technology

1270-9638 (ISSN)

Vol. 82-83 80-91

Ultra Low emission Technology Innovations for Mid-century Aircraft Turbine Engines (ULTIMATE)

European Commission (EC), 2015-09-01 -- 2018-09-01.

Areas of Advance

Transport

Subject Categories

Subatomic Physics

Aerospace Engineering

Vehicle Engineering

Infrastructure

C3SE (Chalmers Centre for Computational Science and Engineering)

DOI

10.1016/j.ast.2018.08.038

More information

Latest update

3/22/2021