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

Compressible Large-Eddy Simulation of Diesel Spray Structure using OpenFOAM

2015 ◽  
Author(s):  
Tsukasa Hori ◽  
Minoru Hanasaki ◽  
Jun Komae ◽  
Eriko Matsumura ◽  
Jiro Senda
Keyword(s):  
Large Eddy Simulation ◽  
Diesel Spray ◽  
Eddy Simulation ◽  
Spray Structure ◽  
Large Eddy

2502 Large Eddy Simulation of Diesel Spray Flame using KIVALES

2007 ◽  
Vol 2007.20 (0) ◽  
pp. 193-194
Author(s):  
Tsukasa HORI ◽  
Hiroshi TANAKA ◽  
Jiro SENDA ◽  
Hajime Fujimoto
Keyword(s):  
Large Eddy Simulation ◽  
Diesel Spray ◽  
Eddy Simulation ◽  
Spray Flame ◽  
Large Eddy

Large Eddy Simulation of Diesel Spray Combustion With a Multi-Component Drop Vaporization Model

2017 ◽  
Author(s):  
Xiaohua Ren ◽  
Lei Zhang ◽  
Zhongli Ji
Keyword(s):  
Experimental Data ◽  
Large Eddy Simulation ◽  
Combustion Process ◽  
Dynamic Structure ◽  
Diesel Spray ◽  
Grid Turbulence ◽  
Fuel Droplets ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Les Model

Large-eddy simulation (LES) of diesel spray and combustion was performed to study its improvement in the simulation of engine in-cylinder dynamics compared to the Reynolds-averaged simulation. For the LES, the dynamic structure approach was used to model the sub-grid turbulence and its interaction with the moving droplets in the spray. A multicomponent vaporization model (MCV) based on the continuous thermodynamics approach and a gamma distribution to describe the distribution of the numerous fuel components, was used to simulate the vaporization of diesel fuel droplets. The MCV model was imbedded into the LES framework in the KIVA-4 program. Using this LES model, a non-evaporative spray in a constant-volume chamber was first simulated. More realistic spray structures and improved agreements in the spray penetration with the experimental data were obtained by the LES compared to a Reynolds-averaged simulation of the same spray. A further simulation of an evaporative diesel spray and the subsequent combustion process using both LES and MCV models was also performed. Improved agreements with the experimental data in the spray structures and soot distributions were also observed using both models.

scholarly journals Analysis of flow and heat transfer during the impingement of a diesel spray on a wall using large eddy simulation

2018 ◽  
Vol 20 (7) ◽  
pp. 758-764 ◽  
Author(s):  
Hiroshi Kawanabe ◽  
Jun Komae ◽  
Takuji Ishiyama
Keyword(s):  
Heat Transfer ◽  
Boundary Layer ◽  
High Temperature ◽  
Large Eddy Simulation ◽  
Diffusion Processes ◽  
Flame Structure ◽  
Outer Region ◽  
Diesel Spray ◽  
Eddy Simulation ◽  
Large Eddy

Numerical calculations were carried out to investigate the formation of a fuel–air mixture as well as ignition and combustion processes associated with a diesel spray impinging on a wall. This was performed by modeling the spray formed by injecting n-heptane into a constant-volume vessel under high temperature and pressure, with the fuel droplets described by a discrete droplet model. The flow and turbulent diffusion processes were calculated based on the large eddy simulation method to simulate the formation of a local non-homogeneous mixture and the accompanying heat release. The flame structure and heat transfer to the wall during impingement were also assessed. The results show that heat transfer to the wall is increased in the peripheral region around the stagnation point, as a result of the high temperature and thin boundary layer. Conversely, in the outer region, the heat transfer decreases as the boundary layer becomes more developed.

108 Large Eddy Simulation of Diesel Spray Structure by Use of KIVALES

2006 ◽  
Vol 2006.81 (0) ◽  
pp. _1-14_
Author(s):  
Tsukasa HORI ◽  
Takahiro KUGE ◽  
Jiro SENDA ◽  
Hajime FUJIMOTO
Keyword(s):  
Large Eddy Simulation ◽  
Diesel Spray ◽  
Eddy Simulation ◽  
Spray Structure ◽  
Large Eddy
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