NUMERICAL SIMULATIONS OF A SIMULTANEOUS DIRECT INJECTION OF A LIQUID AND GASEOUS FUEL INTO CONSTANT VOLUME CHAMBER

  • Łukasz Jan Kapusta Warsaw University of Technology Institute of Heat Engineering
  • Andrzej Teodorczyk Warsaw University of Technology Institute of Heat Engineering

Abstract

Numerical simulations of a dual fuelling process by simultaneous direct injection of liquid and gaseous fuel into combustion chamber were performed. Diesel fuel and CH4 were introduced into the constant volume vessel through separate nozzles. Injection started for both fuels at the same time. Presented simulations were done using an AVL Fire code – the CFD software dedicated for engine simulations. This work was the first step in a process of modeling the full engine cycle including combustion. The aim of the study was to validate the spray model before applying it to more complex simulations. One major simplification was made to speed up the calculation process, instead of full chamber geometry only 60deg sector of the cylindrical chamber containing only two nozzles, one for gaseous fuel and one for liquid was under investigation. The simulation results were compared with literature data [1]. The images from numerical solution presenting spray droplets and CH4 concentration were compared with images made by shadowgraph technique [1].

Author Biographies

Łukasz Jan Kapusta, Warsaw University of Technology Institute of Heat Engineering
PhD student
Andrzej Teodorczyk, Warsaw University of Technology Institute of Heat Engineering
Profesor in the Division of Aeroengines

References

[1] White T.R. “Simultaneous Diesel And Natural Gas Injection For Dual-Fuelling Compression-Ignition Engines”. PhD Thesis (2006)

[2] B.B. Sahoo, N. Sahoo, U.K. Saha. “Effect of engine parameters and type of gaseous fuel on the performance of dual-fuel gas diesel engines—A critical review”. Renewable and Sustainable Energy Reviews 13 (2009) pp.1151–1184

[3] G.H. Abd Alla*, H.A. Soliman, O.A. Badr, M.F. Abd Rabbo “Effect of pilot fuel quantity on the performance of a dual fuel engine”. Energy Conversion & Management. Vol. 41 (2000) pp. 559-572

[4] Xuesong Wu, Ritchie Daniel, Guohong Tian, Hongming Xu, Zuohua Huang, Dave Richardson. “Dual-injection: The flexible, bi-fuel concept for spark-ignition engines fuelled with various gasoline and biofuel blends”

[5] P. Laine “Gas Management Solutions In Oil Production”. In detail – Wärtsilä Technical Journal 01, 2009, pp. 22-26

[6] AVL Fire User Manual: “Fire-WM-UserGuide”, 2009

[7] Hanjalic, K., Popovac, M. and Hadziabdic, M. “A robust near-wall elliptic relaxation eddy-viscosity turbulence model for CFD”, International Journal of Heat and Fluid Flow 25 (2004) pp.1047–1051

[8] Durbin, P.A., 1991. “Near-wall turbulence closure modelling without damping functions”. Theor. Comput. Fluid Dyn. 3, 1–13

[9] Reitz R.D. “Modelling Atomization Process in High-Pressure Vaporising Sprays”. Atomization and Spray Technology, Volume 3, 1987
Published
2012-03-28
How to Cite
KAPUSTA, Łukasz Jan; TEODORCZYK, Andrzej. NUMERICAL SIMULATIONS OF A SIMULTANEOUS DIRECT INJECTION OF A LIQUID AND GASEOUS FUEL INTO CONSTANT VOLUME CHAMBER. Journal of Power Technologies, [S.l.], v. 92, n. 1, p. 12--19, mar. 2012. ISSN 2083-4195. Available at: <https://papers.itc.pw.edu.pl/index.php/JPT/article/view/274>. Date accessed: 05 aug. 2021.
Section
Combustion and Fuel Processing

Keywords

Spray; direct injection; simultaneous injection; dual fuel injection

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