INSPIRE INSpiring Pressure gain combustion Integration, Research, and Education

ESR 1

Project Title: Constant volume combustion and its reduced order model

Hosting Institution: ENSMA

Supervisor: Prof. Marc Bellenoue and Dr. Bastien Boust

Duration: 36 months

Objectives:  The project aims at experimentally investigating the Constant Volume Combustion (CVC) cycle dynamics and stability associated with high dilution by Residual Burned Gas (RBG) or large scavenging associated with fuel-lean equivalence ratios. Such conditions can be used to reach acceptable operation for the gas turbine components (mechanical stresses, material temperature, etc.) and for the environment (CO2 or NOX emissions). Several strategies of ignition (spark, hot spot, self-ignition), and combustion (scavenging, dilution by hot RBG, synthetic dilution by neutral gas) will be characterized in terms of cycle performance and emissions to reach this target. The CV2 test bench (see figure 1) developed in the framework of the CAPA program (Alternative Combustion modes for Airbreathing Propulsion) will be used to perform this study. Time-resolved diagnostics will be performed to gain insight into the reactive flow properties (velocity, turbulence intensity, stratification) and their effects on the overall combustion behaviour. This research will be performed in close association with ESRs 3, and 4 of the INSPIRE program and will take advantage from periods at CERFACS (where the CV2 setup will be simulated).

Expected Results:  Better understanding of: i) key phenomena controlling the CVC stability and performance, ii) ignition processes, iii) impact of scavenging and RBG dilution, and iv) reactive flow behaviour within the combustor.

Planned secondment(s): 3 months in CERFACS (Toulouse, France) for detailed analysis of CVC technology, and additional 3 months at UNIFI (Florence, Italy) to deepen about cooling schemes.

Additional information for application: Requirements: Master or Engineering degree in Fluid mechanics, Energetics, Combustion

Deadline: October 1st 2021

ESR1: Constant volume combustion and its reduced order model - ENSMA (FR), Supervisor: Prof. M. Bellenoue
ESR2: Experimental investigation of an industrial constant volume combustion system - SAFRAN Tech (FR), Supervisors: Dr D. Mejia
ESR3: Simulation of CVC combustor - CERFACS (FR), Supervisors: Prof. T. Poinsot)
ESR4: Experimental characterization of ignition events in CVC like conditions - ENSMA (FR), Supervisor: Prof. J. Sotton
ESR5: Control and impact of RDC wave direction - TUB (DE), Supervisors: Prof. M. Bohon and Prof. C. O. Paschereit
ESR6: LES of flow and combustion in a rotating detonation engine coupled to a turbine - CERFACS (FR), Supervisor: Prof. T. Poinsot
ESR7: Experimental investigation of rotating detonation combustors including ignition processes and turbine-integration effects - TUB (DE), Supervisors: Prof. M. Bohon and Prof. C. O. Paschereit
ESR8: Computational aeroacoustics of the exhaust flow for noise assessment and control - KTH (SE), Supervisor: Prof. M. Mihaescu
ESR9: Deflagration-Autoignition-Detonation transition - TUB (DE), Supervisor: Prof. N. Djordjevic
ESR10: Numerical modelling and optimization of cooling solutions for PGC concepts - UNIFI (IT), Supervisor: Prof. A. Andreini
ESR11: Experimental study of cooling solutions for PGC concepts - UNIFI (IT), Supervisor: Prof. B. Facchin
ESR12: Unsteady numerical simulation of the interaction between pressure-gain combustors and high-pressure turbine stages - POLITO (IT), Supervisors: Prof. D. A. Misul and Dr. S. Salvadori
ESR13: PGC power plant analysis and cycle thermo-economic optimization - UNIGE (IT), Supervisor: Prof. A. Sorce
ESR14: PGC propulsion application with part load and dynamic analysis - UNIGE (IT), Supervisor: Prof. A. Traverso)
ESR15: Full gas dynamic and exergetic analysis of PGC cycles with rotating detonations - TUB (DE), Supervisor: Prof. P. Stathopoulos