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Laminar flame speed of Fossil/Air and Biofuels/Air Combustion
11th International Energy Conversion Engineering Conference, 2013Traditional fossil fuels are considered to be largely responsible for the atmospheric environmental degradation. Biofuels can contribute to reducing the dependency on fossil fuels and to lowering greenhouse gas emissions due to aviation transport and can be considered as both renewable and sustainable energy sources. Indeed, biofuels are recognized as “
INGENITO, ANTONELLA +3 more
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Does high-speed railway reduce air pollution along highways? —— Evidence from China
, 2020Evaluating the environmental effects of the transportation infrastructure is vitally important. Many studies have verified the effects imposed by intra-city rail transit (metro, light rail or subway) on air pollution, but seldom pay attention to the ...
Xiaoyang Guo +3 more
semanticscholar +1 more source
, 2020
In this study, the mechanisms of the chemical, thermal and dilution effects of the CO2, H2O, N2 and EGR quantitatively analyzed on the laminar flame speed, laminar flame structure and key radicals profiles of the premixed methane/air mixture.
Xiongbo Duan +6 more
semanticscholar +1 more source
In this study, the mechanisms of the chemical, thermal and dilution effects of the CO2, H2O, N2 and EGR quantitatively analyzed on the laminar flame speed, laminar flame structure and key radicals profiles of the premixed methane/air mixture.
Xiongbo Duan +6 more
semanticscholar +1 more source
Speed control of an air turbine
Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239), 2002Active magnetic bearings have been used in a rapidly growing number of applications such as jet engines, compressors, pumps and flywheel systems that are required to meet high speed, low vibration, zero frictional wear and clean environment specifications. The MBC 500 is a magnetic bearing system which includes an internal air turbine drive for a rotor
Shi, Juan, Ellis, C
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Proceedings of the Combustion Institute, 2021
Laminar flame speeds of ammonia with oxygen-enriched air (oxygen content varying from 21 to 30 vol.%) and ammonia-hydrogen-air mixtures (fuel hydrogen content varying from 0 to 30 vol.%) at elevated pressure (1–10 bar) and temperature (298–473 K) were ...
K. Shrestha +7 more
semanticscholar +1 more source
Laminar flame speeds of ammonia with oxygen-enriched air (oxygen content varying from 21 to 30 vol.%) and ammonia-hydrogen-air mixtures (fuel hydrogen content varying from 0 to 30 vol.%) at elevated pressure (1–10 bar) and temperature (298–473 K) were ...
K. Shrestha +7 more
semanticscholar +1 more source
2002
Abstract When we play a wide interval, say, wider than a fourth, our first reflex is to move the chin or the lips to shift the angle of attack of the air brush. If it works for you, even when you are out of shape or nervous, of course, do it. My problem with that process is its relative unreliability at the wrong moment, under stress. No
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Abstract When we play a wide interval, say, wider than a fourth, our first reflex is to move the chin or the lips to shift the angle of attack of the air brush. If it works for you, even when you are out of shape or nervous, of course, do it. My problem with that process is its relative unreliability at the wrong moment, under stress. No
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Dependence of the Friction Speed on the Wind Speed in the Surface Air Layer
Atmospheric and Oceanic Optics, 2021The empirical relationships between the friction speed (dynamic speed) and the crosswind speed are considered for different conditions (time of the day, season, stratification type, observation site, and measurement altitude). Initial experimental data used to derive these relationships were acquired by ultrasonic weather stations operating in the ...
V. A. Gladkikh +3 more
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Aerodynamics of high-speed maglev trains passing each other in open air
Journal of Wind Engineering and Industrial Aerodynamics, 2019With increasing train speed, aerodynamic effects pose a safety risk for train operations, especially for trains passing each other, the strong transient aerodynamic loads could result in window breakage, sideward shaking, trackside worker injuries, and ...
Shan Huang, Zhi-wei Li, Ming-zhi Yang
semanticscholar +1 more source
Air-speed/Wing-tip Speed Ratios of Insect Flight
Nature, 1950I HAVE made measurements of the wing movements of the tsetse-fly Glossina palpalis R-D. and other Glossina species in free flight, using a stroboscope and a large series of ‘Arditron’ flash photographs (duration about 1–2 microseconds). The wing-beat frequency for G. palpalis is 120 cycles per second; but investigation shows that the relative speeds of
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The influence of air friction in speed skating
Journal of Biomechanics, 1982With the use of a wind tunnel the air friction force Fw on six speed skaters of different body builds was measured. The dependence of the drag coefficient CD on air velocity v and the influence of different skating postures on drag were investigated.
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