Two-color PLIF Measurement of Instantaneous Molar Fraction in A Supersonic Combustor

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H04199
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Aerospace engineering
• Research Institution: Okayama University
• Principal Investigator: Kouchi Toshinori 岡山大学, 自然科学研究科, 准教授 (40415922)
• Co-Investigator(Kenkyū-buntansha): 柳瀬 眞一郎 岡山大学, 自然科学研究科, 教授 (20135958) ; 永田 靖典 岡山大学, 自然科学研究科, 助教 (20635594)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 先端レーザー計測 / 超音速混合・燃焼 / 推進工学 / 圧縮性流体

Outline of Final Research Achievements

Spaceplane is a promising candidate for next generation space transportation system. Supersonic mixing and combustion are keys to realize the spaceplane. We developed a new technique to measure instantaneous injectant molar fraction in a supersonic flow through this project. The measurement technique is based on Planner Laser Induced Fluoresces (PLIF) using tracer molecules which are excited by laser light. To establish the technique, we first investigated photochemical characteristics of toluene under low-temperature and pressure conditions which is observed in a suction-type supersonic wind tunnel. Then, we established the two-color PLIF measurement system. By using this new measurement system, we are able to quantitatively evaluate mixing efficiency of fuel in a supersonic flow.

Free Research Field

推進工学