Development of a time series 3D-CT mesuring technique applicable for turbulent flames

2014 Fiscal Year Final Research Report

• Project/Area Number: 23560226
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Thermal engineering
• Research Institution: Nagoya Institute of Technology
• Principal Investigator: ISHINO Yojiro 名古屋工業大学, 工学(系)研究科(研究院), 教授 (30242902)
• Project Period (FY): 2011-04-28 – 2015-03-31
• Keywords: 燃焼 / CT計測 / 多次元計測 / 定量シュリーレン計測 / 乱流火炎 / 輝度分布

Outline of Final Research Achievements

In 2011 year, time series 3-dimensional CT(Computer Tomography) measurement (4D-CT) of emission light distribution of a turbulent propane/air premixed flame have been made with a single high speed camera and multi-mirror optical system which has a number of plane mirrors on a ellipsoid of revolution. The high speed camera and the flame were respectively set on two foci of the ellipsoid of revolution in order to focus on each mirror-images of the target flame. The 3D-CT algorithm, MLEM algorithm, employed in this study was verified by using ring-type "phantom distribution". As the result of the 4D-CT measurement, spatio-temporal variations of the turbulent flame luminescence distributions have been obtained successfully.
Second, for 2012-2014 year, instantaneous density distributions of high-speed turbulent flames, having a variety of nozzle exit flow velocity of 4, 6, 8 and 10 m/s, have been successfully CT-reconstructed with a custom-made 20 directional schlieren camera.

Free Research Field

燃焼工学