Early Detection of Thermoacoustic Instabilities in a Cryogenic Rocket Thrust Chamber using Combustion Noise Features and Machine Learning [PDF]
, 2020 Combustion instabilities are particularly problematic for rocket thrust chambers because of their high energy release rates and their operation close to the structural limits. In the last decades, progress has been made in predicting high amplitude combustion instabilities but still, no reliable prediction ability is given.
arxiv +1 more source
Transient combustion responses of homogeneous propellants to acoustic oscillations in axisymmetric rocket motors [PDF]
, 1997 A numerical analysis of unsteady motions in solid rocket motors has been conducted. The formulation considers a 2-D axisymmetric combustion chamber and a choke nozzle, and treats the complete conservation equations accounting for turbulence closure ...
Culick, F. E. C., Roh, T. S.
core +1 more source
Effects of passive pre-chamber jet ignition on combustion and emission at gasoline engine
Advances in Mechanical Engineering, 2021 Pre-chamber jet ignition is a promising way to improve fuel consumption of gasoline engine. A small volume passive pre-chamber was tested at a 1.5L turbocharged GDI engine.
Wei Duan +5 more
doaj +1 more source
Combustion instability control in the model of combustion chamber
Journal of Physics: Conference Series, 2013 An experimental study of the influence of external periodic perturbations on the instability of the combustion chamber in a pulsating combustion. As an external periodic disturbances were used sound waves emitted by the electrodynamics. The purpose of the study was to determine the possibility of using the method of external periodic perturbation to ...
G A Mitrofanov +3 more
openaire +4 more sources
Combined effects of combustion chamber geometry and injection strategy on combustion and emissions of a diesel engine [PDF]
E3S Web of Conferences, 2021 For a certain type of direct injection diesel engine, a three-dimensional model of a single-cylinder complete combustion chamber and in-take/exhaust port was established. Three-dimensional Computational Fluid Dynamics (CFD) analysis software CONVERGE was
Zhang Jizhou, Yan Fuwu, Wang Yu
doaj +1 more source
Energies, 2022 In order to optimize the combustion chamber of a highly intensified single-cylinder diesel engine, including improvement of the air utilization rate in the combustion chamber, optimization of the fuel/air mixture process, reduction of the soot emission ...
Ming Wen +4 more
doaj +1 more source
Laser cleaning of the output window in a laser ignition system for gas turbines [PDF]
, 2012 Laser ignition (LI) of both liquid fuels and gaseous combustible mixtures in gas turbines offers the potential for reduced emissions and increased reliability.
Griffiths, Jonathan David +1 more
core +1 more source
Regular Analysis of Aero-Diesel Piston Engine between Combustion Chamber Size and Emission
International Journal of Aerospace Engineering, 2019 The emission of aero-engines has been a focused issue, studying the regular of combustion chamber size on engine emission performance, with an aviation diesel piston engine as the object of study; the numerical model of diesel combustion spray and ...
Zhongjian Pan, Yu Deng, Lizhi Cheng
doaj +1 more source
Research on the Ignition-Chamber GDI Engine Combustion System
Journal of Thermal Science and Technology, 2009 The ignition-chamber GDI engine combustion system and its fuel injection strategy were presented and studied by multi-dimensional fluid dynamic (CFD) code and experiment.
Lei FU +3 more
doaj +1 more source
Combustion Instability of a Multi-injector Rocket Engine Using the Flamelet Progress Variable Model [PDF]
arXiv, 2021 The combustion instability is investigated computationally for a multi-injector rocket engine using the flamelet progress variable (FPV) model. A C++ code is developed based on OpenFOAM 4.0 to apply the combustion model. Flamelet tables are generated for methane/oxygen combustion at the background pressure of $200$ bar using a 12-species chemical ...
arxiv