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Appl. Sci. 2018, 8(3), 384;

Experiment and Simulation Investigation on the Characteristics of Diesel Spray Impingement Based on Droplet Impact Phenomenon

Beijing Key Laboratory of Performance Guarantee on Urban Rail Transit Vehicles, School of Mechanical-Electronic and Vehicle Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China
Author to whom correspondence should be addressed.
Received: 9 February 2018 / Revised: 28 February 2018 / Accepted: 2 March 2018 / Published: 6 March 2018
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In order to study the characteristics of diesel spray impinging in small-size internal combustion (IC) engine, the laboratorial platform of spray impingement is used to visualize the droplet impact phenomenon. A high-speed camera is used to record the whole process of the spray. An experimental research is accomplished under the impingement phenomenon of diesel spray on the wall with a fixed injection volume of 25 mg, injection pressure of 40 MPa, wall-injector distance of 40mm and orifice diameter of 0.26 mm. The computational fluid dynamics (CFD) simulation is carried out and the turbulence kinetic energy (TKE) distribution diagram is obtained. The results show that the maximum spray radius is 29.3 mm and maximum spray height is 10.2 mm at 2.8 ms. The spray impingement phenomenon presents the “blanket” shape. The simulation results are similar to the experimental results with the average error of the spray height within 3%. View Full-Text
Keywords: diesel; impinging; spray characteristics; turbulence kinetic energy diesel; impinging; spray characteristics; turbulence kinetic energy

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Liu, Y.; Xiang, Q.; Li, Z.; Yao, S.; Liang, X.; Wang, F. Experiment and Simulation Investigation on the Characteristics of Diesel Spray Impingement Based on Droplet Impact Phenomenon. Appl. Sci. 2018, 8, 384.

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