Study on Mixing Process of Diesel Spray Under High Ambient Gas Density Condition

Zama, Yoshio; Ochiai, Wataru; Sugawara, Kentaro; Furuhata, Tomohiko; Arai, Masataka

doi:10.1615/atomizspr.2013007347

Cited by 7 publications

(7 citation statements)

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“…As can be observed in Fig. 4, all velocity profiles show a Gaussian distribution as has been seen previously (Desantes et al, 2007;Meijer et al, 2012a;Pastor et al, 2008;Payri et al, 2008;Zama et al, 2012;Zama et al, 2013). A good agreement was found between the measurements from the two different institutions, as Fig.…”

Section: Validation Of Measurements Against Experimental Datasupporting

confidence: 87%

“…Many authors have employed this technique in fuel sprays with external seeding (Cao et al, 2000;Driscoll et al, 2003;Meijer et al, 2012a;Zhu et al, 2012a) but out of these studies, only Cao et al (2000) and Meijer et al (2012a) perform measurements of the velocity field inside the high ambient density diesel spray. Moreover, to the authors' knowledge, there are very few authors that have successfully measured spray internal velocity fields without the use of seeding particles (Zama et al, 2012;Zama et al, 2013;Zhu et al, 2012b). Out of all these PIV experiments, only Meijer et al (2012a), Zama et al (2012), Zama et al (2013) and Zhu et al (2012b) have performed internal spray velocity measurements for current-trend small nozzle (of outlet diameter Do < 200 µm), high injection pressure and high ambient density conditions.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, to the authors' knowledge, there are very few authors that have successfully measured spray internal velocity fields without the use of seeding particles (Zama et al, 2012;Zama et al, 2013;Zhu et al, 2012b). Out of all these PIV experiments, only Meijer et al (2012a), Zama et al (2012), Zama et al (2013) and Zhu et al (2012b) have performed internal spray velocity measurements for current-trend small nozzle (of outlet diameter Do < 200 µm), high injection pressure and high ambient density conditions.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Velocity field analysis of the high density, high pressure diesel spray

Payri

Viera

Wang

et al. 2016

International Journal of Multiphase Flow

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In this study, particle image velocimetry (PIV) measurements have been performed extensively on a nonreactive dense diesel spray injected from a single orifice injector, under various injection pressure and steady ambient conditions, in a constant flow chamber. Details of PIV setup for diesel spray measurement without additional seeding are explained first. The measured velocity profiles are compared to those obtained from other similar measurements performed in a different institution, as well as those obtained from a 1D spray model simulation, presenting in both cases a good level of agreement. In addition, the velocity fields under various injection pressures and ambient densities show the dominant effects of these parameters on the behavior of diesel spray. The self-similarity of the transverse cut profiles of axial velocity is evaluated, showing that the measurements are in agreement with the hypothesis of self-similar velocity profiles. Finally, the effect of injection pressure and ambient density on the velocity fluctuations is presented and analyzed as well. While the experimental results presented here could help to understand the complex diesel fuel-air mixing process during injection, they also provide additional spray velocity data for future computational model validation, following the main idea of the Engine Combustion Network.

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Section: Validation Of Measurements Against Experimental Datasupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Velocity field analysis of the high density, high pressure diesel spray

Payri

Viera

Wang

et al. 2016

International Journal of Multiphase Flow

View full text Add to dashboard Cite

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“…The mass flow rate of the fuel in the cross section perpendicular to the spray axis is calculated from Equation ( 7) by assuming that the spray is axisymmetric with the spray axis as the central axis. The relationship with the measured fluorescence intensity is given by Equation (8).…”

Section: Quantitative Analysis Methods For Liquid-phase Concentrationmentioning

confidence: 99%

“…where ̇: mass flow rate of fuel in the cross section perpendicular to the spray axis [kg/s], Cd: discharge coefficient [-]. Assuming that the mass flow rate of the fuel in the cross-section perpendicular to the spray axis is the same as the injection rate, the proportionality constant K' between the fluorescence intensity and the liquid concentration in each cross-section is obtained by substituting the measured injection rate into the left-hand side of Equation (8).…”

Section: Quantitative Analysis Methods For Liquid-phase Concentrationmentioning

confidence: 99%

Quantitative Analysis of Concentration Distribution in Non-Evaporative Diesel Spray with Laser Induced Fluorescence Method

Matsuda

NAGAMURA

Matsumura

et al. 2021

ICLASS

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In this paper, a quantitative analysis of concentration distribution in non-evaporative diesel spray with Laser Induced Fluorescence method (LIF)is reported. It is well known that changes in fuel injection and ambient conditions have a significant effect on spray characteristics. Although many studies have been conducted on the characteristics of diesel sprays, little is known about the effect of fuel injection and ambient conditions on the dispersion of liquid phase concentration. The purpose of this study is to evaluate the effects of injection and ambient conditions on mixture formation through quantitative analysis of liquid phase concentration distribution in non-evaporating spray. The cross-sectional mass flow of the fuel was obtained using the momentum theory from the measured concentration distribution of the liquid phase using the laser-induced fluorescence method. The relationship between the fluorescence intensity and the liquid phase concentration was estimated using these data. As a result, quantitative spatial distribution of the liquid phase concentration was obtained, and the effects of injection and ambient conditions on the dispersion of the liquid phase concentration were evaluated.

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