Development of Flame Temperature and Velocity Measurement Using Rayleigh Scattering Extinction Ratio

2014 Fiscal Year Final Research Report

• Project/Area Number: 24656138
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Thermal engineering
• Research Institution: Osaka University
• Principal Investigator: KOMIYAMA Masaharu 大阪大学, 工学(系)研究科(研究院), 准教授 (40178372)
• Co-Investigator(Kenkyū-buntansha): TAKEISHI Kenichiro 大阪大学, 基礎工学研究科, 教授 (70379113) ; ODA Yutaka 関西大学, 工学部, 准教授 (50403150)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: レーリ散乱 / ミー散乱 / 偏光角度

Outline of Final Research Achievements

The spatial profile of Rayleigh scattering depends on the laser polarization angle and we change the angle of a short harmonic generator inside the laser for leaning the polarization angle. The scattering intensity from the leaned laser light plane was measured using two CCD cameras with image-intensifiers. And one camera measures both of Rayleigh scattering and Mie scattering and the other one detects only the background light. We develop to modify the laser intensity profile which depends on the angle of the short harmonic generator. We apply this method to temperature measurement in a lean premixed flame and make it possible to measure the temperature profile without the influence of the background light intensity.

Free Research Field

工学