TY  - JOUR
VL  - 10
A1  - Edara, G.
A1  - Murthy, Y.V.V.S.N.
A1  - Sharma, K.V.
A1  - Pullela, S.
JF  - Case Studies in Thermal Engineering
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85019219744&doi=10.1016%2fj.csite.2017.05.001&partnerID=40&md5=a55a4531ce162ca4ba9809f94dfc176c
Y1  - 2017///
ID  - scholars8431
KW  - Combustion chambers; Diffusion; Diffusion in solids; Drops; Fourier transforms; Fuel systems; Fuels; Heat convection; Heat radiation; Specific heat; Thermal conductivity
KW  -  Droplet combustion; Fuel characteristics; Ignition delays; Ignition temperatures; Mass diffusion; Non-dimensional parameters; Spherical surface; Thermal conservations
KW  -  Ignition
N2  - An analytical method is proposed to estimate the ignition time of the fuel droplet injected in to the combustion chamber of an I.C. engine. The first phase of analysis related to the case of thermal conservation to raise its temperature up to the ignition temperature with non-vaporization from its spherical surface. The ignition temperature depends on the fuel characteristics like specific heat, density, vapor pressure, thermal conductivity, latent heat etc. Subsequently, the mass diffusion of the vapors is included in the investigation. The non -dimensional parameter Fourier number Fo is associated with mass diffusion of vapor from the spherical surface Ï?m-, the convective heat transferÏ?h and the thermal radiation Ï?ϵ from the compressed medium are observed to be the significant criteria in determining the ignition time. For a range of parameters analyzed the ignition time is observed to be a fraction of second. The results show that the term dimensionless radius R+ decreases with increase in Fourier number. Further a correlation is established between the non-dimensional numbers Fourier number and Ï?m,Ï?Mh, Ï?ϵTig+,R+ of the droplet to predict the ignition time is proposed based on the physical configuration of the droplet. © 2017 Published by Elsevier Ltd.
EP  - 130
PB  - Elsevier Ltd
SN  - 2214157X
SP  - 121
TI  - Numerical modeling of a fuel droplet for the evaluation of ignition temperature considering transport properties
N1  - cited By 5
AV  - none
ER  -