Effect of surface tension and evaporation on phase change of fuel droplets

Kakatsios, XK; Krikkis, RN

dc.contributor.author	Kakatsios, XK	en
dc.contributor.author	Krikkis, RN	en
dc.date.accessioned	2014-03-01T01:16:27Z
dc.date.available	2014-03-01T01:16:27Z
dc.date.issued	2001	en
dc.identifier.issn	0145-7632	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14060
dc.subject	Phase Change	en
dc.subject	Surface Tension	en
dc.subject.classification	Thermodynamics	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.classification	Mechanics	en
dc.subject.other	Algorithms	en
dc.subject.other	Combustors	en
dc.subject.other	Evaporation	en
dc.subject.other	Gas turbines	en
dc.subject.other	Heat transfer	en
dc.subject.other	Mass transfer	en
dc.subject.other	Ordinary differential equations	en
dc.subject.other	Runge Kutta methods	en
dc.subject.other	Surface tension	en
dc.subject.other	Thermal expansion	en
dc.subject.other	Vapor pressure	en
dc.subject.other	Droplet momentum	en
dc.subject.other	Fuel droplets	en
dc.subject.other	Phase-change process	en
dc.subject.other	Drop formation	en
dc.title	Effect of surface tension and evaporation on phase change of fuel droplets	en
heal.type	journalArticle	en
heal.identifier.primary	10.1080/014576301300092568	en
heal.identifier.secondary	http://dx.doi.org/10.1080/014576301300092568	en
heal.language	English	en
heal.publicationDate	2001	en
heal.abstract	A model is developed which describes the phase-change process (evaporation) of fuel droplets in a gas turbine engine combustor: To develop this model we have employed the conservation laws (droplet momentum, heat and mass transfer). Specifically, we used Newton's second la,v of motion in conjunction with the thermal expansion of the droplet. In this study the droplet density is considered to be a function of temperature, rho (p) = rho (p)(T-p). As a consequence, the thermal expanisvity alpha = -rho (-1)(p)(d rho (p)/dT(p)) is introduced, which has a significant effect on the evaporation process. Furthermore, the conditions on the droplet's surface are determined by taking into account the effect of surface tension on the fuel vapor pressure. The droplet characteristics such as position, velocity, temperature, and diameter are described by a system of sir ordinary differential equations. which are solved numerically using a variable step Runge-Kutta algorithm of order 5(4). Due to the above conditions, our results differ from those reported in the literature [1-5].	en
heal.publisher	HEMISPHERE PUBL CORP	en
heal.journalName	Heat Transfer Engineering	en
dc.identifier.doi	10.1080/014576301300092568	en
dc.identifier.isi	ISI:000168395200006	en
dc.identifier.volume	22	en
dc.identifier.issue	3	en
dc.identifier.spage	33	en
dc.identifier.epage	40	en