An algorithm for solution of a model for heating and evaporation of a fuel droplet has been developed. The objective of the work is to develop a computationally economic solution module for simulating droplet evaporation that can be incorporated in spray combustion CFD model that handles a large number of droplets. The liquid-phase transient diffusive equation has been solved semi-analytically, which involves a spatially closed-form and temporally discretized solution procedure. The model takes into account droplet surface regression, nonunity gas-phase Lewis number and variation of latent heat with temperature. The accuracy of the model is identical to a Finite Volume solution obtained on a very fine nonuniform grid, but the computational cost is significantly less, making this approach suitable for use in a spray combustion code. The evaporation of isolated heptane droplet in a quiescent ambient has been investigated for ambient pressures of 1 to 5 bar.
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A Semi-Analytical Model for Evaporating Fuel Droplets
Achintya Mukhopadhyay,
Achintya Mukhopadhyay
Department of Mechanical Engineering, Jadavpur University Kolkata—700 032 India
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Dipankar Sanyal
Dipankar Sanyal
Department of Mechanical Engineering, Jadavpur University Kolkata—700 032 India
Search for other works by this author on:
Achintya Mukhopadhyay
Department of Mechanical Engineering, Jadavpur University Kolkata—700 032 India
Dipankar Sanyal
Department of Mechanical Engineering, Jadavpur University Kolkata—700 032 India
Manuscript received March 31, 2004; revision received August 11, 2004. Review conducted by: R. P. Roy.
J. Heat Transfer. Feb 2005, 127(2): 199-203 (5 pages)
Published Online: March 15, 2005
Article history
Received:
March 31, 2004
Revised:
August 11, 2004
Online:
March 15, 2005
Citation
Mukhopadhyay, A., and Sanyal , D. (March 15, 2005). "A Semi-Analytical Model for Evaporating Fuel Droplets ." ASME. J. Heat Transfer. February 2005; 127(2): 199–203. https://doi.org/10.1115/1.1842791
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