Visualization and Analysis of the Impingement Processes of a Narrow-Cone DI Gasoline Spray

Park, Junesung; Xie, Xuan; Kim, Hoisan; Lai, Ming Chia

doi:10.4271/2001-01-2023

Cited by 3 publications

(2 citation statements)

References 21 publications

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“…[2,[274][275][276]), but care is needed to distinguish impinging from rebounding or disintegrating spray droplets, especially for curved surfaces [2,[277][278][279]. Planar Mie scattering (figure 3(a)), LIF and LIEF are effective to visualize the near-wall liquid-and vapor-phase distributions [113,[274][275][276]280], and PDS has been applied for near-wall droplet-size measurement [281]. Line-of-sight-integrated near-wall liquid and vapor mass distributions have been measured by LAS [50].…”

Section: Spray-wall Interactionmentioning

confidence: 99%

Spray measurement technology: a review

Fansler¹,

Parrish²

2014

Meas. Sci. Technol.

209

118

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Sprays are among the most intellectually challenging and practically important topics in fluid mechanics. This paper reviews needs, milestones, challenges, and a broad array of techniques for spray measurement. In addition, tabular summaries provide cross-referenced entry points to the vast literature by organizing over 300 citations according to key spray phenomena, physical parameters and measurement techniques for each of the principal spray regions (nozzle internal flow, near-field spray-formation region, far-field developed spray, and spray-wall interaction). The article closes with perspectives on some current issues in spray research, including the cost and complexity of apparatus for spray physics and spray engineering, the need for simultaneous diagnostic measurements under application-relevant conditions, and the effective comparison of spray measurements and numerical simulations.

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Section: Spray-wall Interactionmentioning

confidence: 99%

Spray measurement technology: a review

Fansler¹,

Parrish²

2014

Meas. Sci. Technol.

209

118

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“…The results showed that the impact height of spray decreased with the increase of the normal angle between the injector and the wall. Park et al [6] used the Mie scattering method and shadow method to study the wall impact characteristics of spray from an in-cylinder direct injection nozzle under different injection angles; they found that reducing the angle with the wall can promote the movement of liquid mist along the wall. Montanaro et al [7,8] studied the wall impact characteristics of isooctane spray, and the results showed that the impact height of the gas phase and liquid phase did not increase linearly with the rise of wall temperature, but decreased after exceeding 473 K; they believe that this situation may be related to the "Leidenfrost" effect.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Behaviors of Methanol Spray Impingement and Wall Wetting

et al. 2022

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Port fuel injection is an important technical route in methanol engines. To obtain a theoretical basis for injector arrangement and injection strategy development in methanol engines, an optimal experimental platform based on diffuse back-illumination and the refractive index matching method (RIM) was designed and built in this study. The experiments on the behavior of low-pressure methanol spray-wall impingement and wall film were carried out and the influence of the three boundary conditions of spray distance (Dimp), wall temperature (Twall), and injection pressure (Pinj) were analyzed comprehensively. Results showed that with the increase of Dimp, the overall shape of spray before impinging the wall changed from conical to cylindrical. The impinging spray height Hi and impinging spray width Wi increased with the decrease of Dimp and the increase of Pinj. Adhesive fuel film mass Mf increased with the increase of Dimp due to the decrease of kinetic energy during wall impact. In addition, the increase of the wall temperature Twall reduced Mf due to evaporation, but when Twall reached 423 K, Mf rebounded due to the Leidenfrost effect. The results of this study are helpful to improve the accuracy of the numerical methanol engine model.

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