Large Eddy Simulation of Diesel Spray Combustion with Eddy-Dissipation Model and CIP Method by Use of KIVALES

2007 ◽  
Author(s):  
Tsukasa Hori ◽  
Takahiro Kuge ◽  
Jiro Senda ◽  
Hajime Fujimoto
Keyword(s):  
Large Eddy Simulation ◽  
Diesel Spray ◽  
Spray Combustion ◽  
Cip Method ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Dissipation Model

scholarly journals Large-Eddy Simulation of Diesel Spray Combustion with Exhaust Gas Recirculation

2013 ◽  
Vol 69 (1) ◽  
pp. 155-165 ◽  
Author(s):  
J. Tillou ◽  
J.-B. Michel ◽  
C. Angelberger ◽  
C. Bekdemir ◽  
D. Veynante
Keyword(s):  
Large Eddy Simulation ◽  
Exhaust Gas Recirculation ◽  
Diesel Spray ◽  
Spray Combustion ◽  
Exhaust Gas ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Gas Recirculation

scholarly journals Large-eddy simulation of tri-fuel ignition: diesel spray-assisted ignition of lean hydrogen–methane–air mixtures

2021 ◽  
pp. 1-24
Author(s):  
Jeevananthan Kannan ◽  
Mahmoud Gadalla ◽  
Bulut Tekgül ◽  
Shervin Karimkashi ◽  
Ossi Kaario ◽  
...  
Keyword(s):  
Large Eddy Simulation ◽  
Diesel Spray ◽  
Eddy Simulation ◽  
Large Eddy

scholarly journals Effects of ambient methanol on pollutants formation in dual-fuel spray combustion at varying ambient temperatures: A large-eddy simulation

2020 ◽  
Vol 279 ◽  
pp. 115774 ◽  
Author(s):  
Shijie Xu ◽  
Shenghui Zhong ◽  
Kar Mun Pang ◽  
Senbin Yu ◽  
Mehdi Jangi ◽  
...  
Keyword(s):  
Large Eddy Simulation ◽  
Fuel Spray ◽  
Spray Combustion ◽  
Dual Fuel ◽  
Ambient Temperatures ◽  
Eddy Simulation ◽  
Large Eddy

Simulating Flame Lift-Off Characteristics of Diesel and Biodiesel Fuels Using Detailed Chemical-Kinetic Mechanisms and Large Eddy Simulation Turbulence Model

2012 ◽  
Vol 134 (3) ◽  
Author(s):  
Sibendu Som ◽  
Douglas E. Longman ◽  
Zhaoyu Luo ◽  
Max Plomer ◽  
Tianfeng Lu ◽  
...  
Keyword(s):  
Large Eddy Simulation ◽  
Turbulence Model ◽  
Turbulence Models ◽  
Chemical Kinetic ◽  
Spray Combustion ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Kinetic Mechanisms ◽  
Lift Off ◽  
Biodiesel Fuels

Combustion in direct-injection diesel engines occurs in a lifted, turbulent diffusion flame mode. Numerous studies indicate that the combustion and emissions in such engines are strongly influenced by the lifted flame characteristics, which are in turn determined by fuel and air mixing in the upstream region of the lifted flame, and consequently by the liquid breakup and spray development processes. From a numerical standpoint, these spray combustion processes depend heavily on the choice of underlying spray, combustion, and turbulence models. The present numerical study investigates the influence of different chemical kinetic mechanisms for diesel and biodiesel fuels, as well as Reynolds-averaged Navier–Stokes (RANS) and large eddy simulation (LES) turbulence models on predicting flame lift-off lengths (LOLs) and ignition delays. Specifically, two chemical kinetic mechanisms for n-heptane (NHPT) and three for biodiesel surrogates are investigated. In addition, the renormalization group (RNG) k-ε (RANS) model is compared to the Smagorinsky based LES turbulence model. Using adaptive grid resolution, minimum grid sizes of 250 μm and 125 μm were obtained for the RANS and LES cases, respectively. Validations of these models were performed against experimental data from Sandia National Laboratories in a constant volume combustion chamber. Ignition delay and flame lift-off validations were performed at different ambient temperature conditions. The LES model predicts lower ignition delays and qualitatively better flame structures compared to the RNG k-ε model. The use of realistic chemistry and a ternary surrogate mixture, which consists of methyl decanoate, methyl nine-decenoate, and NHPT, results in better predicted LOLs and ignition delays. For diesel fuel though, only marginal improvements are observed by using larger size mechanisms. However, these improved predictions come at a significant increase in computational cost.

Effect of Turbulence-Chemistry Interaction on Spray Combustion: A Large Eddy Simulation Study

2019 ◽  
Author(s):  
Junqian Cai ◽  
Tianyou Wang ◽  
Ming Jia ◽  
Kai Sun ◽  
Zhen Lu ◽  
...  
Keyword(s):  
Large Eddy Simulation ◽  
Simulation Study ◽  
Spray Combustion ◽  
Eddy Simulation ◽  
Large Eddy

Large Eddy Simulation of Primary Diesel Spray Atomization

2004 ◽  
Author(s):  
E. de Villiers ◽  
A.D. Gosman ◽  
H.G. Weller
Keyword(s):  
Large Eddy Simulation ◽  
Diesel Spray ◽  
Spray Atomization ◽  
Eddy Simulation ◽  
Large Eddy
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