每年出版 12 期
ISSN 打印: 1044-5110
ISSN 在线: 1936-2684
Indexed in
AN EULERIAN-LAGRANGIAN SPRAY AND ATOMIZATION MODEL WITH IMPROVED TURBULENCE MODELING
摘要
An Eulerian-Lagrangian spray and atomization (ELSA) model for high-pressure diesel sprays has been developed in this study. The new model is based on the assumption that the high-pressure diesel spray and atomization process can be described by considering a single effective phase of liquid-gas mixture to represent the turbulent mixing of a liquid jet with ambient gases. A switch from the Eulerian approach to the Lagrangian approach is made beyond the dense spray region near the nozzle. It has long been recognized that the standard k − ε turbulence model underpredicts the penetration and overpredicts the spreading rate of high-speed free jets. To correct for these effects, several previously proposed techniques are used to correct for vortex stretching and compressibility effects in high-speed free jets in this study. The turbulence model modifications were applied to high-speed gas and liquid jets, and incorporated into the ELSA model to simulate the high-speed diesel spray and atomization process.
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Salvador Francisco Javier, Gimeno Jaime, Pastor José Manuel, Martí-Aldaraví Pedro, Effect of turbulence model and inlet boundary condition on the Diesel spray behavior simulated by an Eulerian Spray Atomization (ESA) model, International Journal of Multiphase Flow, 65, 2014. Crossref
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Xue Q., Battistoni M., Powell C.F., Longman D.E., Quan S.P., Pomraning E., Senecal P.K., Schmidt D.P., Som S., An Eulerian CFD model and X-ray radiography for coupled nozzle flow and spray in internal combustion engines, International Journal of Multiphase Flow, 70, 2015. Crossref
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Desantes J.M., García-Oliver J.M., Pastor J.M., Pandal A., Baldwin E., Schmidt D.P., Coupled/decoupled spray simulation comparison of the ECN spray a condition with the -Y Eulerian atomization model, International Journal of Multiphase Flow, 80, 2016. Crossref
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Xue Qingluan, Battistoni Michele, Som Sibendu, Quan Shaoping, Senecal P. K., Pomraning Eric, Schmidt David, Eulerian CFD Modeling of Coupled Nozzle Flow and Spray with Validation Against X-Ray Radiography Data, SAE International Journal of Engines, 7, 2, 2014. Crossref
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Baldwin E.T., Grover R.O., Parrish S.E., Duke D.J., Matusik K.E., Powell C.F., Kastengren A.L., Schmidt D.P., String flash-boiling in gasoline direct injection simulations with transient needle motion, International Journal of Multiphase Flow, 87, 2016. Crossref
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Vujanović Milan, Petranović Zvonimir, Edelbauer Wilfried, Duić Neven, Modelling spray and combustion processes in diesel engine by using the coupled Eulerian–Eulerian and Eulerian–Lagrangian method, Energy Conversion and Management, 125, 2016. Crossref
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Payri R., Salvador F.J., De la Morena J., Pagano V., Experimental investigation of the effect of orifices inclination angle in multihole diesel injector nozzles. Part 2 – Spray characteristics, Fuel, 213, 2018. Crossref
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Chiatti Giancarlo, Chiavola Ornella, Frezzolini Pierluigi, Palmieri Fulvio, On the Link between Diesel Spray Asymmetry and Off-Axis Needle Displacement, Applied Sciences, 7, 4, 2017. Crossref
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Gimeno Jaime, Martí-Aldaraví Pedro, Carreres Marcos, Peraza Jesús E, Effect of the nozzle holder on injected fuel temperature for experimental test rigs and its influence on diesel sprays, International Journal of Engine Research, 19, 3, 2018. Crossref
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Pakseresht Pedram, Apte Sourabh V., Volumetric displacement effects in Euler-Lagrange LES of particle-laden jet flows, International Journal of Multiphase Flow, 113, 2019. Crossref
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Jacobsohn Gabriel L., Baldwin Eli T., Schmidt David P., Halls Benjamin R., Kastengren Alan, Meyer Terrence R., Diffuse Interface Eulerian Spray Atomization Modeling of Impinging Jet Sprays, 2018 AIAA Aerospace Sciences Meeting, 2018. Crossref
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Ernst Martin, Sommerfeld Martin, Laín Santiago, Quantification of preferential concentration of colliding particles in a homogeneous isotropic turbulent flow, International Journal of Multiphase Flow, 117, 2019. Crossref
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Saha Kaushik, Quan Shaoping, Battistoni Michele, Som Sibendu, Senecal P. K., Pomraning Eric, Coupled Eulerian Internal Nozzle Flow and Lagrangian Spray Simulations for GDI Systems, SAE Technical Paper Series, 1, 2017. Crossref
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Gonzalez-Juez Esteban D., Kerstein Alan R., Multiscale modeling of turbulent atomization: Droplet-size sampling, International Journal of Multiphase Flow, 128, 2020. Crossref
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Kuznetsov V, Shebelev A, Sharypov O, Dekterev A, Minakov A, Simulation of the liquid fuel spraying based on Eulerian-Lagrangian model, Journal of Physics: Conference Series, 1359, 1, 2019. Crossref
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Palanti L., Puggelli S., Langone L., Andreini A., Reveillon J., Duret B., Demoulin F.X., An attempt to predict spray characteristics at early stage of the atomization process by using surface density and curvature distribution, International Journal of Multiphase Flow, 147, 2022. Crossref