Simulation of Oblique Evaporating Diesel Sprays, and Comparison with Empirical Correlations and Simulated Straight Sprays

Ishtiaq A. Chaudhry, M. R. Mirza, M. J. Rashid

Abstract


The innovation in software analysis and various available programming facilities have urged the designers at various levels to do indispensable calculations for engine flows. Presently, the 3-D analysis approach is under practice to do simulations for various parameters involving engine operations using various softwares, “Fluent” being the trendiest at the moment for CFD modeling. The present work involves CFD modeling of diesel fuel sprays at a specified angle with cylinder axis. Fuel spray modeling includes sub-models for aerodynamic drag, droplet oscillation and distortion, turbulence effects, droplet breakup, evaporation, and droplet collision and coalescence. The data available from existing published work is used to model the fuel spray and the subsequent simulation results are compared to experimental results to test validity of the proposed models.

Full Text:

PDF

References


Mirza, M. R., “Studies of Diesel sprays interacting with cross flows and solid boundaries”, PhD Thesis, UMIST UK 1991.

M. R. Mirza, A. H. Baluch, Z.R. Tahir; “Structure of non-evaporating diesel sprays” Pak. J. Engg. & Appl. Sci, 2(2008) 1-8.

M. R. Mirza, A. H. Baluch, I. A. Chaudhry; “Structure of evaporating diesel sprays” Pak. J. Engg. & Appl. Sci, 1(2007) 8-13.

Rashid, M. J., “CFD Modeling of fuel sprays”, M.Sc Thesis, UET Lahore 2008.

J. C. Dent; SAE, (1971) 71057.

Chaudhry I.A. “CFD Modeling of Oblique fuel sprays”, M.Sc Thesis, UET Lahore 2009.

Hiroyasu, H., and Arai, M., “Structure of fuel spray in Diesel engines”, SAE vol 99, 1990.






Copyright (c) 2016 Ishtiaq A. Chaudhry

Powered By KICS