INSPIRE INSpiring Pressure gain combustion Integration, Research, and Education

ESR 10

Introduction and contact info:

Name: Shreyas Ramanagar Sridhara

Work address: Department of Industrial Engineering, Via Santa Marta, 3 – 50139 Firenze, Italy.


PhD project:

Title: Numerical modelling and optimization of cooling solutions for PGC concepts

Next generation Gas Turbine engines should be highly efficient with lesser carbon emissions. Pressure gain Combustion (PGC) technologies offer a promising solution to reach our future goal. Rotating Detonation Combustor (RDC) characterized as a Supersonic type PGC mainly involves detonation waves to increase the pressure gain. The main aim of this PhD is to design optimized cooling solutions for RDC engines such as to facilitate the engines of tomorrow. 

Innovative state of the art non-conventional cooling configurations will be designed and optimized for higher efficiency and lesser pressure drop. Additive manufacturing techniques will be utilized to build the components, hence necessary changes in the computational models are to be accounted for the shift in wall roughness. Performance verification of the obtained design is performed by the means of high fidelity validated numerical models. The optimized design will be experimentally tested by ESR 11.

Supervisor: Professor A. Andreini

Mentor: Dr. Simone Salvadori

Planned secondments: ENSMA – 3 months, POLITO – 2 months, AVIO 1 month.

Background: I am an Aerospace Engineer, I have obtained a Master's degree in Aerospace Engineering from École Centrale de Lyon (ECL), France. Hailing from a small town called Ramanagara located in the southern part of India. I completed my Bachelor's in Aerospace Engineering from Jain University, situated in the outskirts of Bangalore.  Where I learnt my most unforgettable lessons of CFD and combustion from my mentor Dr. Allamaprabhu C Y by involving in the ambitious project of designing a Gas Turbine Combustor. After my Bachelor's I was working as a Teaching Assistant in Jain University. 

During my Masters in ECL the important concepts of Optimization and Aerospace principles were imbibed in me by my mentors. I had a wonderful opportunity to work on the LES of Laminar Separation Bubble (LSB) for low Reynolds number flows during my Master thesis in ENSTA ParisTech, the most interesting part was to learn how the size of the LSB effects the transition to turbulence. Currently I am working under the guidance of Professor Andreini for designing an optimized cooling system for PGC engines.


Personal interests: Computation Fluid Dynamics, Optimization, Combustion, Turbulence and Heat Transfer.

Research highlights:

(include some highlights of the obtained results during the PhD project, including figures and links to external repository, TO BE UPDATED EAVERY 6 MONTHS)

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