Recent Developments in the Research on Pressure-Gain Combustion Devices

Kailasanath, K.

doi:10.1007/978-981-13-9012-8_1

Cited by 26 publications

(5 citation statements)

References 47 publications

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“…According to [5], the thermodynamic efficiency, obtained using a constant volume combustion, is very close to that offered by detonation and can double the Brayton cycle gain. Hutchins and Metghalchi [11] compared the efficiency of the Brayton and the Humphrey cycles, taking the same heat of reaction, the same initial compression ratio, and isentropic expansion of the combustion products.…”

Section: Introductionmentioning

confidence: 85%

“…Theoretical cycle models show that an increase in total pressure around 15% -20% can reduce aircraft fuel consumption from 4% -9% also in modern turbofan [4]. Several PGC concepts are currently studied by the combustion community, ranging from deflagration to detonation [5]. Rotating Detonation Engine [4,6,7] and Pulse Detonation Engine [8,9] utilize propagating detonation waves to increase pressure and temperature, raising significant engineering challenges [10].…”

Section: Introductionmentioning

confidence: 99%

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Large Eddy Simulation of a Pistonless Constant Volume Combustor: A New Concept of Pressure Gain Combustion

Detomaso

Laera

Pouech

et al. 2022

Journal of Engineering for Gas Turbines and Power

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Classical gas turbine thermodynamic cycle has undergone no change over the last decades. The most important efficiency improvements have been obtained reducing thermal losses and raising the overall pressure ratio and peak temperature. Pressure Gain Combustion (PGC) represents an interesting solution to break out current technological limits. Cycle models show that a pressure raise across the combustion process would reduce the fuel consumption, increasing the efficiency. Providing an efficiency close to the corresponding detonative technological concepts, Constant Volume Combustion (CVC) represents a viable solution that still needs to be studied. In the current work, the CV2 (Constant-Volume Combustion Vessel) installed at the Pprime laboratory (France) is numerically investigated using the high-fidelity compressible Large Eddy Simulation (LES) solver AVBP. All the phases of the CVC cycle, i.e. air intake, fuel injection, spark-ignited combustion and exhaust, are considered in the LES. Intake and exhaust valves are properly represented by novel boundary conditions able to mimic the valves impact on the flow without solving their motion and dynamics during the simulation, reducing the computational costs. The spark ignition is modeled as an energy deposition term added to the energy equation. The combustion phase is treated by the dynamic version of the Thickened Flame model extended to deal with non-constant pressure combustion. Time-resolved Particle Imaging Velocimetry and pressure measurement inside the chamber reveal that cold and reactive turbulent flow are well captured in all the phases, showing the reliability of the approach and the models used.

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Section: Introductionmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Large Eddy Simulation of a Pistonless Constant Volume Combustor: A New Concept of Pressure Gain Combustion

Detomaso

Laera

Pouech

et al. 2022

Journal of Engineering for Gas Turbines and Power

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show abstract

“…Fuel injection, mixing, and combustion under supercritical conditions is still not well understood, presenting a research challenge that requires fundamental research as well as technological developments to enable and control supercritical combustion in aeropropulsion systems (Oefelein 2019). Another fundamental phenomenon that is worthy of continued fundamental and applied research is pressure gain combustion (Kailasanath 2020). Pressure gain combustion implemented in gas turbines or other aeropropulsion systems could allow for increased efficiencies of the order of 10%-20%.…”

Section: Decarbonization Of Aeropropulsionmentioning

confidence: 99%

Grand challenges in aerospace propulsion

Oehlschlaeger

2022

Front. Aerosp. Eng.

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“…In recent decades, detonation-based propulsion systems have received increasing interest, due to their ability to achieve higher thermal efficiency and faster energy-releasing rates compared to deflagration [1,2]. The rotating detonation engine (RDE) is considered a highly promising type of detonation-based engine and has been extensively researched in experiments and numerical simulations [3,4].…”

Section: Introductionmentioning

confidence: 99%

BYCFoam: An Improved Solver for Rotating Detonation Engines Based on OpenFOAM

Cheng,

Sheng,

Wang

2024

Energies

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A rotating detonation engine (RDE) is a highly promising detonation-based propulsion system and has been widely researched in recent decades. In this study, BYCFoam, the latest gaseous version of the BYRFoam family, is developed specifically for RDE simulations. It is based on the standard compressible flow solver rhoCentralFoam in OpenFOAM and incorporates several enhancements: improved reconstruction variables and flux schemes; detailed chemistry and transport properties; the utilization of an adaptive mesh refinement (AMR) and dynamic load balancing (DLB). A series of comprehensive numerical tests are conducted, including the shock-tube problem, shock-wave diffraction, homogeneous ignition delay, premixed flame, planar detonation, detonation cellular structure and rotating detonation combustor (RDC). The results demonstrate that BYCFoam can accurately and efficiently simulate the deflagration and detonation processes. This solver enhances the capability of the BYRFoam family for the in-depth exploration of RDE in future research.

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Recent Developments in the Research on Pressure-Gain Combustion Devices

Cited by 26 publications

References 47 publications

Large Eddy Simulation of a Pistonless Constant Volume Combustor: A New Concept of Pressure Gain Combustion

Large Eddy Simulation of a Pistonless Constant Volume Combustor: A New Concept of Pressure Gain Combustion

Grand challenges in aerospace propulsion

BYCFoam: An Improved Solver for Rotating Detonation Engines Based on OpenFOAM

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