A Study on the Behavior and Heat Transfer Characteristics of Impinging Sprays

• Published in: Journal of mechanical science and technology Vol. 15; no. 3; pp. 374 - 383
• Main Authors: Yang, Hei Cheon, Park, Sang Kyoo
• Format: Journal Article
• Language: English
• Published: Seoul 대한기계학회 01.03.2001; Korean Society of Mechanical Engineers; Springer Nature B.V
• Subjects: Droplets; Exact sciences and technology; Fluid dynamics; Fundamental areas of phenomenology (including applications); Heat transfer; Impingement; Mathematical models; Multiphase and particle-laden flows; Nonhomogeneous flows; Physics; Splashing; Sprayers; Sprays; Spreads; Studies; Walls; Mixtures; Experimental study; Conservation laws; Liquid sputtering; Lagrange coordinate; Two-phase flow; Internal combustion engines; Jets; Droplets; Modelling; Interactions; Walls; Heat transfer
• ISSN: 1226-4865; 1738-494X; 1976-3824
• DOI: 10.1007/BF03185221

The spray/wall interaction is considered as an important phenomenon influencing air-fuel mixing in the internal combustion engines. In order to adequately represent the spray/wall interaction process, impingement regimes and post-impingement behavior have been modeled using experimental data and conservation constraints. The modeled regimes were stick, rebound, spread and splash. The tangential velocities of splashing droplets were obtained using a theoretical relationship. The continuous phase was modeled using the Eulerian conservation equations, and the dispersed phase was calculated using a discrete droplet model. The numerical simulations were compared to experimental results for spray impingement normal to the wall. The predictions for the secondary droplet velocities and droplet sizes were in good agreement with the experimental data.[PUBLICATION ABSTRACT]