Publication de 12 numéros par an
ISSN Imprimer: 1044-5110
ISSN En ligne: 1936-2684
Indexed in
FLOW FIELDS AND TURBULENT CHARACTERISTICS IN NON-EVAPORATING DIESEL SPRAYS
RÉSUMÉ
A particle image velocimetry (PIV) technique with a combination of high-speed video camera and continuous wave (CW) green laser light has been applied to non-evaporating diesel sprays injected from single-hole nozzles in a quiescent constant volume vessel. The velocity fields and the turbulent properties have been investigated to gain more insight into the turbulent mixing processes. The present study particularly focuses on the impacts of injection pressure and ambient density which are the principal combustion control parameters in modern diesel engines. The experimental and analytical results show that the distribution of the normalized turbulence intensity of diesel sprays is unchanging regardless of the fuel injection conditions and is identical with the turbulence of gas jets. Besides, as the turbulence intensity depends on the motion of large eddies and the size of these large eddies determines the spray shape, the characteristics of the large eddies, including the integral length scale and Strouhal number, are evaluated.
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Yang Mian, Yuan Chenheng, Chen Yuanpei, Shao Yiming, Numerical study on turbulent dispersion of diesel sprays under ultrahigh injection pressure using large eddy simulation, Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2020. Crossref
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Keskinen Karri, Vera-Tudela Walter, Wright Yuri M, Boulouchos Konstantinos, Experimental investigation of wall heat transfer due to spray combustion in a high-pressure/high-temperature vessel, International Journal of Engine Research, 22, 12, 2021. Crossref
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NANJO Kakeru, OKUYAMA Ryusei, MATSUMURA Eriko, SENDA Jiro, Studies on temporal and spatial variation characteristics of spray boundary in diesel spray (Effects of injection pressure on spray vortex formation), Transactions of the JSME (in Japanese), 87, 903, 2021. Crossref
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Jo Hyun, Kawai Yuta, Horibe Naoto, Hayashi Jun, Kawanabe Hiroshi, Ishiyama Takuji, A Study on Diesel Spray Flame by Time-Resolved PIV with Chemiluminescence of OH*, SAE International Journal of Advances and Current Practices in Mobility, 4, 2, 2021. Crossref
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MATSUDA Dai, NAGAMURA Kosuke, MATSUMURA Eriko, SENDA Jiro, Analysis of liquid phase concentration distribution in non-evaporative diesel spray with laser induced fluorescence method, Transactions of the JSME (in Japanese), 88, 907, 2022. Crossref