Numerical simulation of filtration gas combustion

2017 ◽  
Author(s):  
T. A. Nosova ◽  
Yu. M. Laevsky
Keyword(s):  
Numerical Simulation ◽  
Gas Combustion

B105 NUMERICAL SIMULATION OF A COMBUSTOR FOR BURNING PYROLYSIS GAS(Combustion-2)

2009 ◽  
Vol 2009.1 (0) ◽  
pp. _1-99_-_1-104_
Author(s):  
Chunliang ZHOU ◽  
Jinying LI ◽  
Hongtao ZHENG ◽  
Baoling ZHANG
Keyword(s):  
Numerical Simulation ◽  
Pyrolysis Gas ◽  
Gas Combustion

Methodology for the Numerical Simulation of Natural Gas, Coal, and Coke Combustion in a Blast Furnace

2008 ◽  
Author(s):  
William Walker ◽  
Mingyan Gu ◽  
John D’Alessio ◽  
Neil Macfadyen ◽  
Chenn Zhou
Keyword(s):  
Numerical Simulation ◽  
Blast Furnace ◽  
Natural Gas ◽  
Pulverized Coal ◽  
High Rate ◽  
Gas Combustion ◽  
Blast Furnace Ironmaking ◽  
Coke Combustion ◽  
Ironmaking Process ◽  
Natural Gas Combustion

A blast furnace is a reaction vessel in which iron ore is converted to molten iron. High rate pulverized coal injection (PCI) into a blast furnace (BF) is an existing process that is known to decrease the amount of coke in the ironmaking process. Natural gas co-injection with pulverized coal increases the burnout and devolatilization rates of pulverized coal. Also, hydrogen produced from natural gas combustion is a powerful reducing agent of iron (III) oxide, releasing pure iron that trickles down and is eventually removed through the taphole. Due to the inherent complexity of the blast furnace ironmaking process, numerical simulation can prove to be quite difficult. This paper describes a three step methodology for modeling blast furnace combustion, and its application to a furnace in operation at USSC Hamilton Works.

Sensitivity Analysis of Blast Furnace Gas Combustion

2011 ◽  
Vol 268-270 ◽  
pp. 172-177
Author(s):  
Hui Liu ◽  
Wen Zhong Chen ◽  
Ben Wen Li
Keyword(s):  
Numerical Simulation ◽  
Mathematical Model ◽  
Sensitivity Analysis ◽  
Blast Furnace ◽  
Steady State ◽  
Reaction Mechanism ◽  
Burning Rate ◽  
Gas Combustion ◽  
One Dimensional ◽  
Blast Furnace Gas

Simplification of the detail reaction mechanism is critical to the numerical simulation of BFG (Blast Furnace Gas) combustion. The software CHEMKIN was used for solving a one-dimensional mathematical model of steady-state premixing combustion. By analyzing the effects of BFG’s basic species on the burning rate, the simplified reaction mechanism was obtained. Compared the results of simplified mechanism with that of detail mechanism, the consumed time of the former was less than 1 second but that of the latter was about 18 seconds. The differences between the molar fractions of BFG species which were computed by the two mechanisms were less than 0.4%. Therefore the reliability of the simplified reaction mechanism is verified.

scholarly journals Real-Gas-Flamelet-Model-Based Numerical Simulation and Combustion Instability Analysis of a GH2/LOX Rocket Combustor with Multiple Injectors

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 419
Author(s):  
Won-Sub Hwang ◽  
Bu-Kyeng Sung ◽  
Woojoo Han ◽  
Kang Y. Huh ◽  
Bok Jik Lee ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Combustion Instability ◽  
Dynamic Mode Decomposition ◽  
Dynamic Mode ◽  
Instability Analysis ◽  
Gas Combustion ◽  
Flamelet Model ◽  
Real Gas ◽  
Stable Combustion ◽  
Contour Plots

A large eddy simulation (LES) and combustion instability analysis are performed using OpenFOAM for the multiple shear-coaxial injector combustor DLR-BKD (in German Deutsches Zentrum für Luft–Brennkammer D, German Aerospace Center–Combustion Chamber D), which is a laboratory-scale combustor operating in a real-gas environment. The Redlich–Kwong–Peng–Robinson equation of state and steady-laminar flamelet model are adopted in the simulation to accurately capture the real-gas combustion effects. Moreover, the stable combustion under the LP4 condition is numerically analyzed, and the characteristics of the combustion flow field are investigated. In the numerical simulation of the combustion instability, the instability is generated by artificially superimposing the 1st transverse standing wave solution on the stable combustion solution. To decompose the combustion instability mode, the dynamic mode decomposition method is applied. Several combustion instability modes are qualitatively and quantitatively identified through contour plots and graphs, and the sustenance process of the limit cycle is investigated.

Water uptake by substituted amylose tablets: experimentation and numerical simulation

2009 ◽  
Vol 00 (00) ◽  
pp. 090904073309027-8
Author(s):  
H.W. Wang ◽  
S. Kyriacos ◽  
L. Cartilier
Keyword(s):  
Numerical Simulation ◽  
Water Uptake
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