Investigation of fuel spray atomization in a DI heavy-duty diesel engine and comparison of various spray breakup models

Hossainpour, Siamak; Binesh, A. R.

doi:10.1016/j.fuel.2008.10.036

Cited by 66 publications

(31 citation statements)

References 20 publications

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“…In addition, the maximum breakup occurrence frequencies were 200s and 300s, and were converged to a constant value over time. The reason that the maximum frequency of the bag breakup and the stripping breakup are differently indicated is because for the stripping breakup, the relative velocity between the fuel and the surrounding gas is dominant at high-speed in comparison with the bag breakup (Hossainpour and Binesh, 2009), and because the time of the stripping breakup is reduced as the relative velocity of air and fuel become high speed. Thus, it is considered that for the diesel spray in the diameter of hole of 0.12mm, the vortex of the surrounding gas becomes the most active at 300s.…”

Section: Bag Breakupmentioning

confidence: 99%

Study of behavior characteristics of diesel fuel spray according to breakup models

Yeom

Jung

2015

JTST

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The atomization of the injection fuel in the diesel engine directly affects on the combustion process of engine, and as a result, it is the main factor that determines the operating performance of the engine. In this study, the breakup process of the droplets by the atomization of the injected was investigated, using the breakup models (Reitz&Diwakar, CAB, ETAB and TAB) included in the commercial numerical analysis program. In order to select the optimum model for the droplet breakup interpretation, the results of spray tip penetration, Sauter mean diameter (SMD) and momentum length obtained as each breakup model were compared with the experimental data. In the case of changing of the spray tip penetration as the research results, TAB model was measured the shorter compared to the experimental measurements, and other models showed the similarity with the experimental value. In the case of SMD analysis, the use of Reitz&Diwakar model showed the best results. In addition, the frequency of breakup which is the microscopic spray behavior characteristics considering the impact of the coefficient of contraction in the nozzle was investigated in order to determine the diameter of initial particle in the fuel injection necessary to the numerical analysis. As a result, it was found that there is suitable initial droplet diameter in numerical analysis, in the case of nozzle-hole diameter 0.12mm of this study, it was the most appropriate that the diameter of the initial particle for the numerical analysis is about 0.06mm.

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Section: Bag Breakupmentioning

confidence: 99%

Study of behavior characteristics of diesel fuel spray according to breakup models

Yeom

Jung

2015

JTST

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“…Som and Aggarwal [4] performed 3-D simulations with detailed chemistry using a new advanced breakup model. Hosseinpour and Binesh [5] also used a CFD code to investigate the e ect of a breakup model on spray and mixture formation in a heavy-duty diesel engine. Som et al [6] reported a computational investigation of internal nozzle ow and cavitation characteristics in a diesel injector.…”

Section: Introductionmentioning

confidence: 99%

Probing into the Effects of Fuel Injection Pressure and Nozzle Hole Diameter on Spray Characteristics under Ultra-high Injection Pressures Using Advanced Breakup Model

2016

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Abstract. In this article, non-evaporating and non-reacting diesel spray is modeled under ultra-high injection pressure using an Eulerian-Lagrangian scheme. This is accomplished in order to probe into the e ects of injection pressure, nozzle diameter, and ambient density on spray characteristics. An advanced hybrid breakup model that takes into consideration the transient processes during spray injection has been added to the open source code, OpenFOAM. Reynolds-Average Navier-Stokes (RANS) equations are solved using the standard k " turbulence model and the fuel droplet is tracked by a Lagrangian scheme. Published experimental data have been used for validation of spray characteristics at 15 kg/m 3 ambient density and injection pressures of 100, 200 and 300 MPa. Also, three nozzle diameters of 0.08, 0.12 and 0.16 mm have been implemented for investigating the e ect of this parameter on spray formation. Computed spray shape, jet penetration, spray volume, equivalent ratio along the injector axis and Sauter Mean Diameter (SMD) illustrate good agreement with experimental data of a single hole nozzle and symmetric spray. The e ects of fuel injection pressure, nozzle hole diameter and ambient density on main spray parameters are presented. It is concluded that the numerical model presented here is quite suitable for accurately predicting diesel spray shapes under ultra-high injection pressures.

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“…Diesel fuel injection process will dynamically control spray behavior which is known to be a strong parameter that affects combustion process [4]-6]. The spray behavior and atomization characteristics of diesel spray have been investigated by [7], 8]. They conclude that the knowledge of the fuel spray atomization mechanism can be a key issue for a successful simulation of all the subsequent process of mixture formation and eventually combustion and pollutant formation.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Diesel Spray Droplets Behavior Using Shadowgraph Technique Images

Adam¹,

Mamat²,

Yatsufusa³

2015

IJMMM

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Abstract-This study investigates the effects of injection pressure and ambient temperature on distribution of number density and diameter of fuel droplet in diesel fuel spray by using shadow-graph photography technique. The large number of fuel droplets was statistically analyzed by newly developed algorithm. The results show that the larger-size particles exist closer to the spray tip. Higher injection pressure promotes atomization and high ambient temperature has great effect on formation of small-size droplet at early time of injection period, especially at up and midstream of the spray.  Index Terms-Atomization, spray images, shadowgraph, droplets measurement.

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Investigation of fuel spray atomization in a DI heavy-duty diesel engine and comparison of various spray breakup models

Cited by 66 publications

References 20 publications

Study of behavior characteristics of diesel fuel spray according to breakup models

Study of behavior characteristics of diesel fuel spray according to breakup models

Probing into the Effects of Fuel Injection Pressure and Nozzle Hole Diameter on Spray Characteristics under Ultra-high Injection Pressures Using Advanced Breakup Model

Analysis of Diesel Spray Droplets Behavior Using Shadowgraph Technique Images

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