SYNOPSIS A method of calculation of droplet vaporisation rates which takes into account the effects of finite injection rates and diameter distribution is presented. A simple approximate expression is derived and used to investigate the significance of these effects. It is concluded that they are both important: numerical techniques for allowing for the effects are suggested. The relevance to engine combustion performance at different speeds and injection conditions is discussed.
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References
1.
WilliamsF.A., On the assumptions underlying vaporisation and combustion theories, Jour. Chem. Phys., 1960, 33, 1.
2.
SpaldingD.B., Theory of particle combustion at high pressures, A.R.S. Journal, 1959, November.
3.
RanzW.E.MarshallW.R., Evaporation from droplets, Chem. Eng. Progress, 1952, 48.
4.
TanasawaY.TesimaT., On the theory of combustion rate of liquid fuel spray, Bulletin ASME, 1958, 1, 1.
5.
PriemR.J.BormanG.L.El WakilM.M.UyeharaO.A.MyersP.S., Experimental and calculated histories of vaporising fuel droplets, N.A.C.A. Tech. Note 3988, 1957.
6.
FaethG.N.LazarR.S., Bipropellant droplet burning rates and lifetimes in a combustion gas environment, N.A.C.A. CR-72622, 1969.
7.
FaethG.M.DominicisD.P.OhlsonD.R., An investigation of near critical and supercritical burning of fuel droplets, N.A.C.A. CR-72314.
