scholarly journals Effect of Radiation Reabsorption on Laminar Burning Velocity of Methane Premixed Flame Containing with Steam and Carbon Dioxide

2006 ◽  
Vol 49 (2) ◽  
pp. 260-264
Author(s):  
Takumi EBARA ◽  
Norihiko IKI ◽  
Sanyo TAKAHASHI ◽  
Won-Hee PARK
Keyword(s):  
Carbon Dioxide ◽  
Burning Velocity ◽  
Premixed Flame ◽  
Laminar Burning Velocity ◽  
Radiation Reabsorption

Influence of Radiation Reabsorption on Laminar Burning Velocity of Methane Premixed Flame Composed With Steam and Carbon Dioxide

2005 ◽  
Author(s):  
Takumi Ebara ◽  
Norihiko Iki ◽  
Sanyo Takahashi ◽  
Won-Hee Park
Keyword(s):  
Carbon Dioxide ◽  
Gas Turbine ◽  
Laminar Flame ◽  
Burning Velocity ◽  
Chemical Kinetic ◽  
Laminar Burning Velocity ◽  
Premixed Laminar ◽  
Kinetic Calculations ◽  
Reforming Gas ◽  
Radiation Reabsorption

Replacing the Nitrogen with another kind of inert gas such as steam and Carbon dioxide is effective for both reducing NOx and enhancing system efficiency in gas turbine combustor. But the flame properties of such radiative mixture are complicated because of the third body effect and radiation reabsorption. So, we made detailed chemical kinetic calculations including the effect of radiation reabsorption to clarify the premixed laminar flame speed of such mixture as one of the most important properties for controlling the combustion. The concentrations of mixture are varied, and addition of other species such as Carbon monoxide and Hydrogen are also calculated to simulate the utilization of reforming gas and partially oxidized gas. And the pressure was varied up to 5.0 MPa to simulate the 1700 °C class combined gas turbine system. The results show remarkable incensement of laminar burning velocity by considering the radiation reabsorption. Laminar burning velocities were accelerated up to 150% in cases of Methane–Oxygen and steam or Carbon dioxide mixture. It was found that preheating of upstream-unburned mixture caused this acceleration. And the influence of radiation reabsorption was much larger in case of lower pressure.

Laminar burning velocity of microalgae oil/RP-3 premixed flame at elevated initial temperature and pressure

Fuel ◽  
2022 ◽  
Vol 309 ◽  
pp. 122081
Author(s):  
Yu Liu ◽  
Wu Gu ◽  
Jinduo Wang ◽  
Hongan Ma ◽  
Nanhang Dong ◽  
...  
Keyword(s):  
Initial Temperature ◽  
Burning Velocity ◽  
Premixed Flame ◽  
Laminar Burning Velocity ◽  
Microalgae Oil ◽  
Temperature And Pressure

Effects of CH4 mixing on the laminar burning velocity and Markstein length of RP-3/air premixed flame

Fuel ◽  
2021 ◽  
Vol 289 ◽  
pp. 119761
Author(s):  
Yu Liu ◽  
Jinduo Wang ◽  
Wu Gu ◽  
Hongan Ma ◽  
Wen Zeng
Keyword(s):  
Burning Velocity ◽  
Premixed Flame ◽  
Laminar Burning Velocity ◽  
Markstein Length

Study on the laminar burning velocity of ethanol/RP-3 aviation kerosene premixed flame

2022 ◽  
Vol 238 ◽  
pp. 111921
Author(s):  
Yu Liu ◽  
Wu Gu ◽  
Jinduo Wang ◽  
Dawei Rao ◽  
Xiaoxiao Chen ◽  
...  
Keyword(s):  
Burning Velocity ◽  
Premixed Flame ◽  
Laminar Burning Velocity ◽  
Aviation Kerosene

scholarly journals Prediction of Deflagrative Explosions in Variety of Closed Vessels

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2138
Author(s):  
Wojciech Rudy ◽  
Andrzej Pekalski ◽  
Dmitriy Makarov ◽  
Andrzej Teodorczyk ◽  
Vladimir Molkov
Keyword(s):  
Flame Front ◽  
Burning Velocity ◽  
Premixed Flame ◽  
Combustion Mechanism ◽  
Velocity Dependence ◽  
Laminar Burning Velocity ◽  
Transient Pressure ◽  
Predictive Capability ◽  
Preferential Diffusion ◽  
Insight Into

In this paper the multi-phenomena deflagration model is used to simulate deflagrative combustion of several fuel–air mixtures in various scale closed vessels. The experimental transient pressure of methane–air, ethane–air, and propane–air deflagrations in vessels of volume 0.02 m3, 1 m3, and 6 m3 were simulated. The model includes key mechanisms affecting propagation of premixed flame front: the dependence of laminar burning velocity of concentration, pressure, and temperature; the effect of preferential diffusion in the corrugated flame front or leading point concept; turbulence generated by flame front itself or Karlovitz turbulence; increase of the flame front area with flame radius by fractals; and turbulence in the unburned mixture. Laminar velocity dependence on concentration, pressure, and temperature were calculated using CANTERA software. Various scale and geometry of used vessels induces various combustion mechanism. Simulations allow insight into the dominating mechanism. The model demonstrated an acceptable predictive capability for a variety of fuels and vessel sizes.

Effect of N 2 /CO 2 dilution on laminar burning velocity of H 2 –CO–O 2 oxy-fuel premixed flame

2015 ◽  
Vol 40 (2) ◽  
pp. 1203-1211 ◽  
Author(s):  
W.B. Weng ◽  
Z.H. Wang ◽  
Y. He ◽  
R. Whiddon ◽  
Y.J. Zhou ◽  
...  
Keyword(s):  
Burning Velocity ◽  
Premixed Flame ◽  
Laminar Burning Velocity
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