Three-Dimensional PIV Measurement in Supersonic Flow
Stereoscopic particle image velocimetry (SPIV) measurement was explored with a transverse injection behind a backward-facing step in a supersonic flow. The SPIV technique without injection is initially validated comparing the quantitative information of the SPIV with the computational fluid dynamics (CFD) result. For an injection case, the fuel plume is governed by the counter-rotating vortex pair which also affects the velocity components of the nearby flowfield. Furthermore, high vorticity region is distributed below the fuel plume, and the turbulence intensity region (fluctuating flow) is concentrated on the core region of the fuel plume. Based on these quantitative results of the SPIV, we can understand that the vorticty around the fuel plume provides the air into the fuel plume, and then the air is mixed well with the fuel by the intensive fluctuating flow.
Stereoscopic PIV CFD backward-facing step transverse injection,counter-rotating vortex pair vorticity and turbulence intensity
Chae-hyoung Kim In-Seuck Jeung Byungil Choi Toshinori Kouchi Goro Masuya
Department of Aerospace Engineering, Seoul National University, Seoul 151-744,Korea Department of Aerospace Engineering, Tohoku University, Sendai 980-8579, Japan
国际会议
2011年亚太航空航天技术学术会议(APISAT 2011)
澳大利亚
英文
1-10
2011-02-28（万方平台首次上网日期，不代表论文的发表时间）