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dc.contributor.authorSim, Jaeheon
dc.contributor.authorIm, Hong G.
dc.contributor.authorChung, Suk Ho
dc.date.accessioned2015-08-04T07:23:59Z
dc.date.available2015-08-04T07:23:59Z
dc.date.issued2014-01-10
dc.identifier.citationSim, J., Im, H. G., & Chung, S. H. (2014). Modeling of Fuel Vapor Jet Eruption Induced by Local Droplet Heating. 52nd Aerospace Sciences Meeting. doi:10.2514/6.2014-1017
dc.identifier.isbn9781624102561
dc.identifier.doi10.2514/6.2014-1017
dc.identifier.urihttp://hdl.handle.net/10754/564881
dc.description.abstractThe evaporation of a droplet by non-uniform heating is numerically investigated in order to understand the mechanism of the fuel-vapor jet eruption observed in the flame spread of a droplet array under microgravity condition. The phenomenon was believed to be mainly responsible for the enhanced flame spread rate through a droplet cloud at microgravity conditions. A modified Eulerian-Lagrangian method with a local phase change model is utilized to describe the interfacial dynamics between liquid droplet and surrounding air. It is found that the localized heating creates a temperature gradient along the droplet surface, induces the corresponding surface tension gradient, and thus develops an inner flow circulation commonly referred to as the Marangoni convection. Furthermore, the effect also produces a strong shear flow around the droplet surface, thereby pushing the fuel vapor toward the wake region of the droplet to form a vapor jet eruption. A parametric study clearly demonstrated that at realistic droplet combustion conditions the Marangoni effect is indeed responsible for the observed phenomena, in contrast to the results based on constant surface tension approximation
dc.publisherAmerican Institute of Aeronautics and Astronautics (AIAA)
dc.titleModeling of fuel vapor jet eruption induced by local droplet heating
dc.typeConference Paper
dc.contributor.departmentClean Combustion Research Center
dc.contributor.departmentCombustion and Laser Diagnostics Laboratory
dc.contributor.departmentComputational Reacting Flow Laboratory (CRFL)
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journal52nd Aerospace Sciences Meeting
dc.conference.date13 January 2014 through 17 January 2014
dc.conference.name52nd AIAA Aerospace Sciences Meeting - AIAA Science and Technology Forum and Exposition, SciTech 2014
dc.conference.locationNational Harbor, MD
dc.contributor.institutionUniversity of Michigan, Ann Arbor, MI 48109, United States
kaust.personSim, Jaeheon
kaust.personIm, Hong G.
kaust.personChung, Suk Ho
dc.date.published-online2014-01-10
dc.date.published-print2014-01-13


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