Formation of Turbulent Eddies in Jet Diffusion Flames

スポンサーリンク

概要

• 論文の詳細を見る

• The transition from laminar to turbulent mode of an ethylene jet flame was investigated using the two-dimensional instantaneous photography of turbulent eddies by a laser-light sheeting method. Observations were made of the eddies around the break point in the fuel flow and the flame. The results show that in the laminar region the fuel flow is curved due to instability in the shear layer, whereas the outer soot layer has little curvature because of the high viscosity in the hot layer. In the transient region, eddies generated in the fuel flow deform the outer soot layer. Numerical calculations were performed to predict fluid motions due to interaction between density and pressure gradients in the flame boundary. The results show that the pressure gradient in a medium of varying density generates the vorticity along the flame. Deformation and stretching of the flame boundary take place once the vorticity becomes stronger than the dissipation due to viscosity.

• 一般社団法人日本機械学会の論文
• 1996-05-15

著者

• Ikegami Makoto

  Department Of Mechanical Engineerimg Kyoto University

• Ikegami M

  Dept. Of Energy Science And Engineering Kyoto University

• SHIOJI Masahiro

  Department of Energy Science and Engineering, Kyoto University

• KAWANABE Hiroshi

  Department of Energy Science and Engineering, Kyoto University

• YAMANE Koji

  Department of Mechanical Systems Engineering, The University of Shiga Prefecture

• SHIOJI Masahiro

  Dept. of Energy Science and Engineering, Kyoto University

• YAMANE Koji

  Dept. of Mechanical Systems Engineering, The University of Shiga Prefecture

• Yamane K

  Univ. Shiga Prefecture Shiga Jpn

• Yamane Koji

  Department Of Mechanical Systems Engineering The Univ. Of Shiga Prefecture

• Shioji M

  Dept. Of Energy Science And Engineering Kyoto University

• Shioji Masahiro

  Department Of Energy Conversion Kyoto University

• Kawanabe Hiroshi

  Department Of Energy Science And Engineering Kyoto University

関連論文

• Influences of Direction of Fuel Injection and Wall Temperature upon Combustion in a Diesel Engine
• Structure of a Flat Flame Stabilized by an Air Swirl
• The Relationship between Rate of Pressure Rise and Connecting Passage Area in a Swirl Chamber Type Diesel Engine
• Formation of Turbulent Eddies in Jet Diffusion Flames
• Simultaneous Reduction of Particulates and Nitrogen Oxides in the Unsteady Turbulent Diffusion Combustion
• Turbulent Eddies in a Jet Flame as Visualized by a Laser Sheet Method
• Homogenous Nucleation Theory for Soot Formation
• Kinetics of Soot Cluster Formation at High Temperatures
• (1-07) Prediction of Ignition Processes in Fuel Sprays Including Turbulent Mixing and Reduced Chemical Reaction Models((DE-3)Diesel Engine Combustion 3-Modeling)
• Flow in Luminous Jet Diffusion Flames
• Prevention of Idling Knock of a Diesel Engine by Means of Inlet Throttling
• Multidimensional Simulation of NO and Soot from D.I. Diesel Engines with Fuel Injection Rate Shaping
• (3-08) Influence of Physical and Chemical Properties of Biodiesel Fuel on Injection, Combustion and Exhaust Emission Characteristics in a DI-CI Engine((AF-3)Alternative Fuels 3-Biomass Fuels and Fuel Design)
• Trends and Future of Biofuels
• DE2-1: Improvement of Low-Temperature Combustion by Two-Stage Injection(DE: Diesel Engine Combustion,General Session Papers)

もっと見る 閉じる

スポンサーリンク