Large Eddy Simulation of the Internal Flow in Diesel Nozzles

Author

He, Zhixia ; Zhong, Wenjun ; Huang, Yunlong ; Jiang, Zhaocheng

Author_Institution

Sch. of Energy Resources & Power Eng., Jiangsu Univ., Zhenjiang, China

fYear

2012

fDate

27-29 March 2012

Firstpage

1

Lastpage

4

Abstract

The large eddy simulation was applied for the internal turbulent flow in diesel nozzles. Computational results were compared with those obtained from RANS(RNG κ-ε ) model. The influence of the meshing size on the simulation results were studied. The results showed that the meshing size has little effect on the flow structure when the model is adopted. Compared to the κ-ε model, the LES model results showed the obvious asymmetry and more complex turbulent flow structure. Furthermore, the LES model can capture a much wider range of vertical structures than the κ-ε model.

Keywords

Navier-Stokes equations; automotive engineering; diesel engines; flow simulation; nozzles; numerical analysis; turbulence; LES model; RANS model; RNG κ-ε turbulence model; Reynolds averaged Navier-Stokes model; diesel engines; diesel nozzles; flow structure; internal flow simulation; internal turbulent flow; large eddy simulation; meshing size; Adaptation models; Computational modeling; Equations; Mathematical model; Numerical models; Radio access networks; Solid modeling;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Engineering Conference (APPEEC), 2012 Asia-Pacific

Conference_Location

Shanghai

ISSN

2157-4839

Print_ISBN

978-1-4577-0545-8

Type

conf

DOI

10.1109/APPEEC.2012.6306913

Filename

6306913