Computational characterization of the secondary droplets formed during the impingement of a train of ethanol drops
TLDR
In this article, the secondary droplets formed during the impingement of a train of ethanol drops were characterized using three-dimensional direct numerical simulations performed under conditions under which a train was impinguated.Abstract:
This article uniquely characterizes the secondary droplets formed during the impingement of a train of ethanol drops, using three-dimensional direct numerical simulations performed under conditions...read more
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Spray-wall interactions in direct-injection engines: An introductory overview:
TL;DR: In this article, the authors present a special issue of "Spray-Wall Interactions in Engine Mixture Preparation and Emission Formation: A Special Issue of Engine Engineering." They describe the most critical physical processes in engines today.
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High-speed impact of micron-sized diesel drop trains—Splashing dynamics, secondary droplet formation, and effects of pre-existing film thickness
TL;DR: In this paper, the authors investigated surface impingement of monodispersed diesel drop trains using computational simulations, including high-speed impact of micrometer-sized fuel drops onto initially dry and wetted stainless steel substrates.
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A numerical–experimental assessment of wall impingement models for spark-ignition direct-injection engines:
Ronald O. Grover,Todd D. Fansler,Todd D. Fansler,Andreas M. Lippert,Andreas M. Lippert,Michael C. Drake,Dennis N. Assanis,Dennis N. Assanis +7 more
TL;DR: In this article, the authors focus on detailed evaluations of numerical droplet test results for direct-injection engines and show that liquid wall impingement can cause soot and hydrocarbon emissions as well as reduced combustion efficiency.
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Microscopic characteristics of multiple droplets behaviors at the near-wall region during the quasi-steady state
Hongliang Luo,Hongliang Luo,Feixiang Chang,Cheng Zhan,Keiya Nishida,Keiya Nishida,Yoichi Ogata,Yoichi Ogata,Jin Zhang,Jing Yao,Xiangdong Kong,Jingyu Zhu +11 more
TL;DR: In this paper, the diameter and velocity of droplets were calculated and analyzed as well as the Weber number at 40μm to make the multiple droplets impacting on the wall at the near-wall region under various injection pressure from 10 to 30 MPa during the quasi-steady state.
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Enabling robust simulation of polyoxymethylene dimethyl ether 3 (PODE3) combustion in engines
TL;DR: PODE3 reaction mechanism developments are still in the early stages with very limited research as mentioned in this paper, and reaction mechanisms to characterize PODE3 combustion are neither sufficiently compact nor sufficiently compact.
References
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Journal ArticleDOI
Numerical solution of the Navier-Stokes equations
TL;DR: In this paper, a finite-difference method for solving the time-dependent Navier-Stokes equations for an incompressible fluid is introduced, which is equally applicable to problems in two and three space dimensions.
Journal ArticleDOI
Drop Impact Dynamics: Splashing, Spreading, Receding, Bouncing ...
TL;DR: In this article, a review deals with drop impacts on thin liquid layers and dry surfaces, referred to as splashing, and their propagation is discussed in detail, as well as some additional kindred, albeit nonsplashing, phenomena like drop spreading and deposition, receding (recoil), jetting, fingering, and rebound.
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Droplet-wall collisions: Experimental studies of the deformation and breakup process
TL;DR: In this article, a model of the deposition-splashing boundary in terms of Reynolds number and Ohnesorge number is presented, which is only achieved if the normal velocity component of the impinging droplets is used in these dimensionless numbers.
Journal ArticleDOI
Impact of drops on solid surfaces : self-similar capillary waves, and splashing as a new type of kinematic discontinuity
Alexander L. Yarin,D. A. Weiss +1 more
TL;DR: In this paper, the impact of drops impinging one by one on a solid surface is studied experimentally and theoretically, and it is shown that the splashing threshold corresponds to the onset of a velocity discontinuity propagating over the liquid layer on the wall.
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A balanced-force algorithm for continuous and sharp interfacial surface tension models within a volume tracking framework
Marianne M. Francois,Sharen J. Cummins,Edward D. Dendy,Douglas B. Kothe,James M. Sicilian,Matthew W. Williams +5 more
TL;DR: It is demonstrated that a flow algorithm designed to legislate force balance retains an exact balance between surface tension forces and the resulting pressure gradients for both continuous and sharp representations of interfacial surface tension.
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