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Changhao Lu, Enzhe Song, Congcong Xu, Zuo Ni, Xiyu Yang and Quan Dong
Stable ultra-lean combustion is an effective way for natural gas engines to reduce NOx emissions, but it also has higher requirements for ignition stability. The passive pre-chamber can effectively increase the ignition energy and extend the lean-burn li...
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Daniel Martinez-Sanchis, Andrej Sternin, Oskar Haidn and Martin Tajmar
Direct numerical simulations of non-premixed fuel-rich methane?oxygen flames at 20 bar are conducted to investigate the turbulent mixing burning of gaseous propellants in rocket engines. The reacting flow is simulated by using an EBI-DNS solver within an...
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Harjot Singh Saluja, Feijia Yin, Arvind Gangoli Rao and Volker Grewe
The climate impact of aviation is considerably different from that of other transport modes. The turbofan engine?s efficiency can be increased by increasing the Operating Pressure Ratio (OPR), bypass ratio (BPR) and Turbine Inlet Temperature (TIT), there...
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Yang Wang, Cheng Tian and Pengfei Yang
Ozone addition presents a promising approach for optimizing and regulating both combustion and ignition mechanisms. In Rotating Detonation Engines (RDEs), investigating the impact of ozone addition is particularly important due to the fact of their uniqu...
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Ghazanfar Mehdi, Maria Grazia De Giorgi, Sara Bonuso, Zubair Ali Shah, Giacomo Cinieri and Antonio Ficarella
This study investigates the kinetic modeling of CH4/H2/Air mixture with nanosecond pulse discharge (NSPD) by varying H2/CH4 ratios from 0 to 20% at ambient pressure and temperature. A validated version of the plasma and chemical kinetic mechanisms was us...
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Shiyi Pan, Jinhua Wang, Bin Liang, Hao Duan and Zuohua Huang
Hydrogen addition can improve the performance and extend the lean burn limit of gasoline engines. Different hydrogen injection strategies lead to different types of hydrogen mixture distribution (HMD), which affects the engine performance. Therefore, the...
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Shokri Amzin
Combustible carbon-based energy is still prevailing as the world?s leading energy due to its high energy density. However, the oxidation of these hydrocarbons disturbs the natural carbon cycle greatly by increasing greenhouse gases. As emission legislati...
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Federica Farisco, Luisa Castellanos, Jakob Woisetschläger and Wolfgang Sanz
Lean premixed combustion technology became state of the art in recent heavy-duty gas turbines and aeroengines. In combustion chambers operating under fuel-lean conditions, unsteady heat release can augment pressure amplitudes, resulting in component engi...
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Gergely I. Novotni and Viktor Józsa
Swirl burners are widely used in numerous practical applications since they are characterized by low pollutant emission and a wide operating range. Besides reliable operation, a burner must fulfill noise emission regulations, which is often a sound press...
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Mark Nekhamin,Ihor Beztsennyi,Natalia Dunayevska,Volodimir Vyfatnuik
Pág. 48 - 53
The use of binary mixtures in TPP steam generators as fuels is caused by various reasons, such as improvement of ignition conditions and the possible environmental benefits of burning binary mixtures. Since the existing boilers of TPP were calculated for...
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