Mathematical modeling of turbulent combustion of hydrogen in a boundary layer

1998 ◽  
Vol 71 (1) ◽  
pp. 81-86
Author(s):  
É. P. Volchkov ◽  
N. A. Dvornikov ◽  
L. N. Perepechko
Keyword(s):  
Mathematical Modeling ◽  
Boundary Layer ◽  
Turbulent Combustion ◽  
Combustion Of Hydrogen

Technological Features of the Liquid-Solid State of the Boundary Layer in the Processes of Bimetallic Products

2022 ◽  
Vol 1049 ◽  
pp. 53-61
Author(s):  
Valeriy Lykhoshva ◽  
Dmitry Glushkov ◽  
Elena Reintal ◽  
Valeriy V. Savin ◽  
Ludmila Alexeyevna Savina ◽  
...  
Keyword(s):  
Mathematical Modeling ◽  
Experimental Data ◽  
Boundary Layer ◽  
Solid State ◽  
Liquid Phase ◽  
Contact Zone ◽  
Thermal Field ◽  
Thermal State ◽  
Existence Time ◽  
Modeling Data

The hydrodynamic and thermal state in the contact zone of the layers of a bimetallic product obtained by pouring liquid iron onto a solid steel billet, which changes in time and is responsible for the strength of the diffusion joint and the geometric parameters of the transition layer, has been investigated. Simplified analytical dependences, mathematical modeling data and experimental results of the liquid phase existence time in the contact zone based on research of the melt velocities during pouring and changes in the thermal field are presented. It is shown that simplified calculations data coincide in order and are close in values ​​to the calculations of mathematical modeling and experimental data, which makes it possible to use them for preliminary rough estimates by technologists and metallurgists.

scholarly journals Experimental Study of Gas Explosions in Hydrogen Sulfide-Natural Gas-Air Mixtures

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
André Vagner Gaathaug ◽  
Dag Bjerketvedt ◽  
Knut Vaagsaether ◽  
Sandra Hennie Nilsen
Keyword(s):  
Experimental Study ◽  
Hydrogen Sulfide ◽  
Natural Gas ◽  
Turbulent Combustion ◽  
Reference Data ◽  
Pressure Transducers ◽  
Explosion Pressure ◽  
Gas Explosions ◽  
The Rich ◽  
Combustion Of Hydrogen

An experimental study of turbulent combustion of hydrogen sulfide (H2S) and natural gas was performed to provide reference data for verification of CFD codes and direct comparison. Hydrogen sulfide is present in most crude oil sources, and the explosion behaviour of pure H2S and mixtures with natural gas is important to address. The explosion behaviour was studied in a four-meter-long square pipe. The first two meters of the pipe had obstacles while the rest was smooth. Pressure transducers were used to measure the combustion in the pipe. The pure H2S gave slightly lower explosion pressure than pure natural gas for lean-to-stoichiometric mixtures. The rich H2S gave higher pressure than natural gas. Mixtures of H2S and natural gas were also studied and pressure spikes were observed when 5% and 10% H2S were added to natural gas and also when 5% and 10% natural gas were added to H2S. The addition of 5% H2S to natural gas resulted in higher pressure than pure H2S and pure natural gas. The 5% mixture gave much faster combustion than pure natural gas under fuel rich conditions.

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