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Home Archives Thermal Letter Officers Future meetings Assembly for International Heat Transfer Conferences
International Heat Transfer Conference 12
2002, 18-23 August, Grenoble, France

Analytical and numerical modelling of convective and radiative heating of fuel droplets in diesel engines

DOI: 10.1615/IHTC12.5250
6 pages

Abstract

A simple model for convective heating of droplets, which takes into account their nite thermal conductivity and internal recirculation, is discussed. This model is based on the parabolic approximation of the temperature pro les inside droplets. The approximation of the average absorption efficiency factor of semi-transparent droplets by the expression arbdi, where rdi are the droplet radii, and a and b are quadratic functions of gas temperature, is discussed. The simplicity of both models makes them particularly convenient for implementation into CFD codes. Preliminary results of implementation of both models into the CFD code VECTIS of Ricardo Consulting engineers are presented.