Entropy Analysis of Microscopic Diffusion Phenomena in Diesel Sprays(<Special Issue>Recent Combustion Technology in Internal Combustion Engines)

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概要

• 論文の詳細を見る

• Rapid mixing of fuel and air is an essential factor in improving combustion and emissions of diesel engines, and it is important to know the relationship between the microscopic structure of the heterogeneous distribution of fuel clouds and the local turbulence structure. This paper investigates local diffusion phenomena in sprays with focusing on scales of fuel cloud and eddies based on a newly developed entropy method. The results show that the diffusion intensity is the highest in the vicinity of the nozzle exit, and the heterogeneity scale is the smallest here. The heterogeneity scale increases gradually along the spray axis towards the downstream, with smaller size scales in the large clouds. In the downstream region, small-scale structures diffuse and become unclear, while large scale structures clearly remain. The paper details the microscopic structure of the heterogeneity in diesel sprays, and it demonstrates availability of the entropy method.

• 2003-02-15

著者

• KIKUTA Kazushige

  Division of Mechanical Science, Hokkaido University

• Chikahisa Takemi

  Division Of Energy And Environmental Systems Graduate School Of Engineering Hokkaido University

• Hishinuma Yukio

  Division Of Mechanical Science Graduate School Of Engineering Hokkaido University

• YUYAMA Ryo

  Division of Mechanical Science, Hokkaido University

• Yuyama Ryo

  Div. Of Mechanical Science Hokkaido University

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• Entropy Analysis of Microscopic Diffusion Phenomena in Diesel Sprays(Recent Combustion Technology in Internal Combustion Engines)
• (1-25) Entropy Analysis of Microscopic Diffusion Phenomena in Diesel Sprays((FS-2)Fuel Sprays 2-Diesel sprays)
• Study on Predicting Combustion and NO_x Formation in Diesel Engines from Scale Model Experiments

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