Modelling of the gas combustion process

• Authors: Teresa Baczyńska , Józef Głowiński , Adam Hałat
• Languages of publication: EN

Abstracts

EN

This paper reports on a procedure which leads to the assessment of the KG values without the need of determining the maximal rate of pressure rise by experiments. A simulation is proposed of the combustion process in its simplest form, i.e. one-dimensional propagation of the flame. Such simulation enables the burning velocity Su to be assessed. Knowing the Su values for different compositions of the flammable mixture makes it possible to determine the Su, max value. Once the correlation between Su,max and KG has been established, this will enable us to assign an appropriate value of KG to that of the maximal burning velocity. An example of such a correlation is given. It refers to flammable mixtures of a comparatively low burning velocity.

Keywords

EN

flammable gas; burning velocity; rate of pressure rise; deflagration index KG

• Publisher: De Gruyter Open
• Journal: Polish Journal of Chemical Technology
• Year: 2008
• Volume: 10
• Issue: 1
• Pages: 15-18

Dates

published

1 - 1 - 2008

online

3 - 4 - 2008

Contributors

author

Teresa Baczyńska

• Institute of Inorganic Technology and Mineral Fertilizers, University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

author

Józef Głowiński

• Institute of Inorganic Technology and Mineral Fertilizers, University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

author

Adam Hałat

• Institute of Inorganic Technology and Mineral Fertilizers, University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

References

• Williams, F. A. (1985) Combustion Theory. The Benjamin Cummings Publishing Company, Inc., Menelo Park, California, USA.
• PN-EN 13673-2:2005. Determination of the maximum explosion pressure and the maximum rate of pressure rise of gases and vapours - Part 2: Determination of the maximum pressure rise.
• Andrews, G. E. & Bradley, D.(1972). Determination of burning velocities: A Critical Review, Comb. Flame, 18, 133 - 153.
• Bradley, D. & Mitcheson, A. (1976) Mathematical solutions for explosions in spherical vessels, Comb. Flame, 26, 201 - 217.
• CHEMKIN, PREMIX, A program for modeling steady, laminar one-dimensional premixed flames. Version 4.0.
• Bartknecht, W.(1981) Explosions, Springer-Verlag.
• Cashdollar, K. L., Zlochower, I. A., Green, G. M., Thomas, R. A. & Hertzberg, M. (2000) Flammability of methane, propane, and hydrogen gases, J. Loss Prev. Process Ind., 13, 327 - 340.
• Mashuga, Ch.V. & Crowl, D. A. (2000) Problems with identifying a standard procedure for determining KG values for flammable vapours, J. Loss Prev. Process Ind. 13, 369 - 376.
• Warnatz, J. (1981). The structure of laminar alkane, alkene, and acetylene flames, 18th Symp.(Int.) on Comb. (pp.369 - 381) The Comb. Inst., Pittsburgh.

Identifiers

DOI

10.2478/v10026-008-0004-8