每年出版 12 期
ISSN 打印: 1044-5110
ISSN 在线: 1936-2684
Indexed in
CFD SIMULATION OF DIESEL SPRAYS OVER A WIDE RANGE OF AMBIENT GAS DENSITIES USING AN IMPROVED GAS JET SPRAY MODEL
摘要
The spray tip penetration of diesel sprays was simulated over wide ranges of ambient gas densities using a uniform profile gas jet model equation, which uses the concept of an effective injection velocity. The spray tip penetration obtained with this correlation equation shows a nearly complete match with available experimental data over the range of ambient gas densities from 3.6 to 124 kg/m3. The spray penetration over this wide range of ambient gas densities was also simulated using the KIVA code, which was implemented with various gas jet submodels, including uniform profile and normal or Gaussian gas jet profile models. The effects of the model’s gas entrainment coefficient K and breakup length coefficient Cb on the spray penetration were investigated by parametric studies. Improved predictions of the spray tip penetration where obtained using the Normal Gas Jet Profile model with an entrainment coefficient K = 0.7, in agreement with previous research. An optimal breakup length coefficient Cb = 1.9 was also found when the model includes both the ambient gas density and the spray cone angle as parameters.
-
Lee Choong Hoon, Reitz Rolf D., CFD simulations of diesel spray tip penetration with multiple injections and with engine compression ratios up to 100:1, Fuel, 111, 2013. Crossref
-
Lee Choong Hoon, Reitz Rolf D., A comparative study on CFD simulation of spray penetration between gas jet and standard KIVA-3V spray model over a wide range of ambient gas densities, Journal of Mechanical Science and Technology, 26, 12, 2012. Crossref
-
Lee Choong-Hoon, A Comparative Study Between CFD and 0-D Simulation of Diesel Sprays with Several Fuel Injection Patterns Using Gas Jet Spray Model, Journal of ILASS-Korea, 17, 2, 2012. Crossref
-
Lu Zhen, Zhou Lei, Ren Zhuyin, Lu Tianfeng, Law Chung K., Effects of Spray and Turbulence Modelling on the Mixing and Combustion Characteristics of an n-heptane Spray Flame Simulated with Dynamic Adaptive Chemistry, Flow, Turbulence and Combustion, 97, 2, 2016. Crossref
-
Zhou Lei, Zhao Wanhui, Wei Haiqiao, Effect of improved accelerating method on efficient chemistry calculations in diesel engine, International Journal of Engine Research, 19, 8, 2018. Crossref
-
Wei Haiqiao, Chen Xi, Zhao Wanhui, Zhou Lei, Chen Rui, Effects of the turbulence model and the spray model on predictions of the n-heptane jet fuel–air mixing and the ignition characteristics with a reduced chemistry mechanism, Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 231, 14, 2017. Crossref
-
Das Shubhra Kanti, Lim Ock Taeck, Spray Simulation of n-heptane in a Constant Volume Combustion Chamber Over a Wide Range of Ambient Gas Density and Fuel Temperature, Energy Procedia, 105, 2017. Crossref
-
Lee C. H., Effect of nozzle orifice diameter on diesel spray tip penetration according to various spray models for CFD simulation with widely varying back pressure, International Journal of Automotive Technology, 18, 2, 2017. Crossref
-
Zhou Lei, Zhong Lijia, Qin Wenjin, Zhao Wanhui, Wei Haiqiao, Application of cell agglomeration algorithm coupled with dynamic adaptive chemistry for transient engine simulation of diesel fuel, Fuel, 234, 2018. Crossref
-
Liu Long, Mei Qihao, Xiong Qian, One-Dimensional Modelling And Mixing Process Analysis of Diesel Spray with Multiple-Injection, SAE Technical Paper Series, 1, 2019. Crossref
-
Nsikane DM, Vogiatzaki K, Morgan RE, Heikal M, Mustafa K, Ward A, Winder N, Novel approach for adaptive coefficient tuning for the simulation of evaporating high-speed sprays injected into a high-temperature and high-pressure environment, International Journal of Engine Research, 21, 7, 2020. Crossref
-
Nsikane Daniel M., Mustafa Kenan, Ward Andrew, Morgan Robert, Mason David, Heikal Morgan, Statistical Approach on Visualizing Multi-Variable Interactions in a Hybrid Breakup Model under ECN Spray Conditions, SAE International Journal of Engines, 10, 5, 2017. Crossref
-
Liu Long, Mei Qihao, Jia Weinan, A flexible diesel spray model for advanced injection strategy, Fuel, 314, 2022. Crossref
-
Zhou Lei, Zhao Wanhui, Luo Kai Hong, jia Ming, Wei Haiqiao, Xie Maozhao, Spray–turbulence–chemistry interactions under engine-like conditions, Progress in Energy and Combustion Science, 86, 2021. Crossref