Modeling wall impaction of diesel sprays

Gavaises, M; Theodorakakos, A; Bergeles, GC

dc.contributor.author	Gavaises, M	en
dc.contributor.author	Theodorakakos, A	en
dc.contributor.author	Bergeles, GC	en
dc.date.accessioned	2014-03-01T01:12:05Z
dc.date.available	2014-03-01T01:12:05Z
dc.date.issued	1996	en
dc.identifier.issn	0142-727X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11947
dc.subject	Diesel spray	en
dc.subject	Modeling	en
dc.subject	Wall impaction	en
dc.subject.classification	Thermodynamics	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.classification	Mechanics	en
dc.subject.other	Atomization	en
dc.subject.other	Compressible flow	en
dc.subject.other	Computational fluid dynamics	en
dc.subject.other	Diesel fuels	en
dc.subject.other	Drop breakup	en
dc.subject.other	Internal combustion engines	en
dc.subject.other	Mathematical models	en
dc.subject.other	Navier Stokes equations	en
dc.subject.other	Spraying	en
dc.subject.other	Unsteady flow	en
dc.subject.other	Diesel sprays	en
dc.subject.other	Wall impaction	en
dc.subject.other	Wall flow	en
dc.subject.other	impact	en
dc.subject.other	modelling-mathematical	en
dc.subject.other	sprays	en
dc.subject.other	walls	en
dc.title	Modeling wall impaction of diesel sprays	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/0142-727X(95)00097-A	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0142-727X(95)00097-A	en
heal.language	English	en
heal.publicationDate	1996	en
heal.abstract	A model for diesel spray wall impaction is presented, which is assessed against experiments for a number of test cases, including normal or angled injection to a wall into a quiescent space or a cross-flowing gas at various gas pressures. New relationships are given for the velocities of the droplets rebounding from the wall. These relationships take into account the wall roughness and the possible break-up of the droplets during their impingement. The impingement model was incorporated in a spray model based on the stochastic particle technique (Dukowicz 1980) and accounts for the phenomena of droplet injection, break-up, collision and coalescence, turbulent dispersion, and evaporation. The spray model was incorporated in a recently developed three-dimensional (3-D) computational fluid dynamics (CFD) code that simulates the unsteady compressible flow of the gas in internal combustion engines by solving the full Navier-Stokes equations. It was found that the motion of the surrounding gas caused by the spray injection plays a minor role on the predicted results. The latter concern the wall spray radius and the wall spray height. The validity of the spray model is demonstrated through extensive comparisons with experiments over a wide range of gas conditions.	en
heal.publisher	BUTTERWORTH-HEINEMANN	en
heal.journalName	International Journal of Heat and Fluid Flow	en
dc.identifier.doi	10.1016/0142-727X(95)00097-A	en
dc.identifier.isi	ISI:A1996UL24300006	en
dc.identifier.volume	17	en
dc.identifier.issue	2	en
dc.identifier.spage	130	en
dc.identifier.epage	138	en