Erscheint 12 Ausgaben pro Jahr
ISSN Druckformat: 1044-5110
ISSN Online: 1936-2684
IF:
1.2
5-Year IF:
1.8
Immediacy Index:
0.3
Eigenfactor:
0.00095
JCI:
0.28
SJR:
0.341
SNIP:
0.536
CiteScore™::
1.9
H-Index:
57
Indexed in
DROP/WALL INTERACTION CRITERIA AND THEIR APPLICATIONS IN DIESEL SPRAY MODELING
Get access
ABSTRAKT
Drop/wall interaction studies are reviewed with emphasis on diesel spray modeling applications. The wall temperature and drop Weber number have major influences on the outcome of drop/wall interactions. It is known that the drop will rebound with a near-spherical shape once the wall temperature exceeds the Leidenfrost temperature due to a vapor blanket that forms between the liquid drop and the wall. The Leidenfrost temperature increases significantly as the ambient pressure increases. The in-cylinder pressure already exceeds the critical pressure of the fuel drop at the time of injection such that the critical temperature of a fuel drop is a better indication of its wall-wetting possibility. It is unlikely that the surface temperature will exceed either the Leidenfrost temperature or the critical temperature under diesel engine conditions. Thus, the liquid drop will at least be in partial contact with the surface and a fuel film is likely to form. However, the amount of wall film will be less than that observed from single drop/wall impingement experiments due to the interaction of the flattened liquid drops that generates splashing droplets from the wall. On the other hand, nucleate boiling may not occur due to the high in-cylinder pressure that prevents bubbles from nucleating and escaping from the liquid despite the high piston surface temperature. Various splashing criteria are compared and a critical splashing limit is proposed that relates the drop Weber number and Reynolds number to the surface roughness and the existing film thickness. Due to the interactions of fuel drops at the impact site that result in more splashing droplets and less fuel film, previously developed drop/wall interaction models that do not emphasize the formation of wall films can still perform reasonably well in diesel spray modeling.
-
Zhang Lei, Kong Song-Charng, Modeling of multi-component fuel vaporization and combustion for gasoline and diesel spray, Chemical Engineering Science, 64, 16, 2009. Crossref
-
Yoon Sam S., Jepsen Richard A., James Scott C., Liu Jie, Aguilar Guillermo, Are Drop-Impact Phenomena Described by Rayleigh-Taylor or Kelvin-Helmholtz Theory?, Drying Technology, 27, 3, 2009. Crossref
-
Jia Ming, Peng Zhijun, Xie Maozhao, Stobart Richard, Evaluation of Spray/Wall Interaction Models under the Conditions Related to Diesel HCCI Engines, SAE International Journal of Fuels and Lubricants, 1, 1, 2008. Crossref
-
Jiao Qi, Reitz Rolf D., The Effect of Operating Parameters on Soot Emissions in GDI Engines, SAE International Journal of Engines, 8, 3, 2015. Crossref
-
Yang Xiufeng, Dai Lu, Kong Song-Charng, Simulation of liquid drop impact on dry and wet surfaces using SPH method, Proceedings of the Combustion Institute, 36, 2, 2017. Crossref
-
Niu Yang-Yao, Wang Hong-Wei, Simulations of the shock waves and cavitation bubbles during a three-dimensional high-speed droplet impingement based on a two-fluid model, Computers & Fluids, 134-135, 2016. Crossref
-
Yoon Sam S., Kim Ho Y., Lee Dongjo, Kim Namsoo, Jepsen Richard A., James Scott C., Experimental Splash Studies of Monodisperse Sprays Impacting Variously Shaped Surfaces, Drying Technology, 27, 2, 2009. Crossref
-
Jiao Qi, Reitz Rolf D, Modeling soot emissions from wall films in a direct-injection spark-ignition engine, International Journal of Engine Research, 16, 8, 2015. Crossref
-
Yang Xiufeng, Kong Song-Charng, 3D Simulation of Drop Impact on Dry Surface Using SPH Method, International Journal of Computational Methods, 15, 03, 2018. Crossref
-
Yang Xiufeng, Ray Manjil, Kong Song-Charng, Kweon Chol-Bum M., SPH simulation of fuel drop impact on heated surfaces, Proceedings of the Combustion Institute, 37, 3, 2019. Crossref
-
Yang Xiufeng, Pan Yaoyu, Kong Song-Charng, Ting Foo Chern, Iyer Claudia, Yi Jianwen, Numerical Study of Fuel Droplet Impact on Heated Surfaces Using Smoothed Particle Hydrodynamics Method, SAE Technical Paper Series, 1, 2019. Crossref
-
Zhang Wu, Hara Ryosuke, Fujikawa Tatsuya, Yamakawa Masahisa, Watanabe Tomohiro, Ichikawa Yukihiko, Nishida Keiya, Ogata Yoichi, Vaporization and Turbulence Characteristics of High Pressure Gasoline Sprays Impinging on a Wall, SAE Technical Paper Series, 1, 2019. Crossref
-
Liu Hong, Yan Yan’an, Jia Ming, Xie Maozhao, Lee Chia-fon F., Three-dimensional numerical investigation on wall film formation and evaporation in port fuel injection engines, Numerical Heat Transfer, Part A: Applications, 69, 12, 2016. Crossref
-
Shi Yu, Reitz Rolf D, Multi-dimensional Modelling of Diesel Combustion: Review, in Modelling Diesel Combustion, 2010. Crossref
-
Chausalkar Abhijeet, Kong Song-Charng, Michael James B., Multicomponent drop breakup during impact with heated walls, International Journal of Heat and Mass Transfer, 141, 2019. Crossref
-
Yang Xiufeng, Kong Song-Charng, Smoothed particle hydrodynamics modeling of fuel drop impact on a heated surface at atmospheric and elevated pressures, Physical Review E, 102, 3, 2020. Crossref
-
Subedi Kshitiz Kumar, Kong Song-Charng, Modeling the Effects of Drop Impingement Frequency on Heated Walls at Engine Conditions, SAE Technical Paper Series, 1, 2022. Crossref
-
Shi Yu, Reitz Rolf D., Multi-dimensional Modelling of Diesel Combustion: A Review, in Modelling Diesel Combustion, 2022. Crossref
-
Qin Mengxiao, Yang Tao, Song Yuxin, Tang Chenglong, Zhang Peng, Subpatterns of Thin-Sheet Splash of a Droplet Impact on a Heated Surface, Langmuir, 38, 2, 2022. Crossref
-
Pan Yaoyu, Yang Xiufeng, Kong Song-Charng, Ting Foo Chern, Iyer Claudia, Yi Jianwen, Characterization of fuel drop impact on wall films using SPH simulation, International Journal of Engine Research, 23, 3, 2022. Crossref
-
Subedi Kshitiz Kumar, Kong Song-Charng, Numerical study on the Leidenfrost behavior of a droplet stream impinging on a heated wall, Physical Review E, 106, 1, 2022. Crossref