Results 21 to 30 of about 173,478 (292)

Optical properties of high pressure liquid hydrogen across molecular dissociation [PDF]

, 2018
Optical properties of compressed fluid hydrogen in the region where dissociation and metallization is observed are computed by ab-initio methods and compared to recent experimental results. We confirm that above 3000 K both processes are continuous while
Ceperley, David M., Morales, Miguel A., Pierleoni, Carlo, Rillo, Giovanni   +3 more
core   +2 more sources

Study on ignition and combustion characteristics of prechamber ignition using rapid compression and expansion machine

Nihon Kikai Gakkai ronbunshu, 2021
The prechamber combustion characteristics were studied using a rapid compression and expansion machine (RCEM) to improve the efficiency of cogeneration natural gas engines.
Daisuke MORI, Satoshi WAKU, Riku YAMASHITA, Fumio SHIMADA, Kimitoshi TANOUE, Yasuo MORIYOSHI   +5 more
doaj   +1 more source

Effects of Buffer Gas Composition on Autoignition of Dimethyl Ether

Energies, 2015
Experimental and numerical studies are conducted on the thermal, chemical and dilution effects of buffer gas composition on autoignition of dimethyl ether (DME).
Zhicheng Shi, Hongguang Zhang, Hao Liu, Haitao Lu, Jiazheng Li, Xiang Gao   +5 more
doaj   +1 more source

Study on promotion of lean combustion by oxygen enrichment using a rapid compression expansion machine

Nihon Kikai Gakkai ronbunshu, 2021
While lean combustion in SI engine is one of the promising methods to increase the thermal efficiency and reduce the pollutant emissions, it causes instability of ignition and combustion due to the low burning velocity.
Kazuki HARADA, Shion ANDO, Yuya ITO, Yuzo KAWASOE, Hideki HASHIMOTO, Osamu MORIUE   +5 more
doaj   +1 more source

A Novel Dual Fuel Reaction Mechanism for Ignition in Natural Gas–Diesel Combustion

Energies, 2019
In this study, a reaction mechanism is presented that is optimized for the simulation of the dual fuel combustion process using n-heptane and a mixture of methane/propane as surrogate fuels for diesel and natural gas, respectively.
Sebastian Schuh, Jens Frühhaber, Thomas Lauer, Franz Winter   +3 more
doaj   +1 more source

Multi compression–expansion process for chemical energy conversion: Transformation of methane to unsaturated hydrocarbons and hydrogen

Applications in Energy and Combustion Science, 2023
With the global energy system moving towards renewable energies, there is an increasing demand for flexible conversion processes which can cope with the temporally and locally fluctuating nature of energy supply and energy demand.
Simon Drost, Robert Schießl, Ulrich Maas   +2 more
doaj   +1 more source

Rapid Design and Manufacture of Ultralight Cellular Materials [PDF]

, 2005
This paper details the design, manufacture and testing of regular metallic lattice structures with unit cell sizes in the range 0.8mm to 5mm and truss elements of 100-500 µm in diameter [1].
Brooks, W., Cantwell, W., Mines, R., Sutcliffe, C., Todd, J.   +4 more
core   +1 more source

Experimental and Modeling Studies on the Correlation Between Auto-Ignition Delays and the Methane Number of Liquefied Natural Gas (LNG) and Liquefied Biogas (LBG)

Frontiers in Mechanical Engineering, 2020
Liquefied natural gas (LNG) and liquefied biogas (LBG) as transport fuels constitute one of the pillars of the European clean fuel strategy. LNG and LBG often contain higher hydrocarbons up to C5, which leads to more complex ignition properties when ...
Bo Shu, Sonal K. Vallabhuni, Jiaxin Zheng, Jiaxin Zheng, Sumit Agarwal, Ravi X. Fernandes, Ravi X. Fernandes   +6 more
doaj   +1 more source

Experimental Investigation and Benchmark Study of Oxidation of Methane–Propane–n-Heptane Mixtures at Pressures up to 100 bar

Energies, 2019
Dual fuel combustion exhibits a high degree of complexity due to the presence of different fuels like diesel and natural gas in initially different physical states and a spatially strongly varying mixing ratio.
Sebastian Schuh, Ajoy Kumar Ramalingam, Heiko Minwegen, Karl Alexander Heufer, Franz Winter   +4 more
doaj   +1 more source

Analysis of Diesel Knock for High-Altitude Heavy-Duty Engines Using Optical Rapid Compression Machines

Energies, 2020
In high altitude regions, affected by the low-pressure and low-temperature atmosphere, diesel knock is likely to be encountered in heavy-duty engines operating at low-speed and high-load conditions.
Xiangting Wang, Haiqiao Wei, Jiaying Pan, Zhen Hu, Zeyuan Zheng, Mingzhang Pan   +5 more
doaj   +1 more source