Three-Dimensional Structure of Transonic Shear Flow Interacting with Shock Wave

跨音速剪切流与冲击波相互作用的三维结构

• 批准号: 07405010
• 负责人: INOUE Masahiro
• 金额: $ 18.43万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07405010/
• 关键词: Laser-Induced Fluorescence; Transonic Flow; Flow Measurement; LIF Method; Shear Flow; Shock Wave; Flow Visualization

A laser-induced fluorescence (LIF) method has been developed to measure three-dimensional structure and unsteady behavior of transonic shear flows interacting with shock waves. It was applied to flow measurements for the shock-wave/boundary-layr and shock-wave/free-shear-layr interaction problems. Detailed data on the interaction problems obtained by the LIF method were analyzed and compared with numerical simulations to investigate the unsteady three-dimensional behavior of the transonic shear flows interacting with shock waves. As a result, the following conclusions can be drawn :From a three-dimensional temperature distribution measured in a transonic duct flow field with a swept-back bump using a three-dimensional flow measurement system based on the LIF method, highly complicated flow structure in the three-dimensional shock-wave/boundary-layr interaction field was clarified including three-dimensional shock pattern induced by the swept-back bump, shock reflection form on duct walls and flow separation structure in wall boundary layres. It was found that the present measuremennt system offered a powerful diagnoxtic tool for the three-dimensional transonic shear flow interacting with shock waves.The LIF method was applied to an unsteady three-dimensional flow measurement for the shock-wave/free-shear-layr interaction in a supersonic cavity flow. The flow phenomena in the interaction field, namely shear layr separated from the cavity leading edge, detached shock wave at the cabity trailing edge and vortex structure in the cavity were made clear from three-dimensional distributions of time-averaged temperature and temperature fluctuation. Three different types of self-sustained flow oscillation in the supersonic cavity were found out.

发展了一种激光诱导荧光（LIF）方法，用于测量跨声速剪切流与激波相互作用的三维结构和非定常特性。它被应用于激波/边界层和激波/自由剪切层干扰问题的流动测量。为了研究跨音速剪切流与激波相互作用的三维非定常特性，对LIF方法获得的有关相互作用问题的详细数据进行了分析，并与数值模拟结果进行了比较。结果表明：利用基于激光诱导荧光法的三维流场测量系统测量了后掠凸块跨音速管道流场的三维温度分布，揭示了三维激波/边界层干扰场中高度复杂的流动结构，包括后掠凸块诱导的三维激波斑图、激波在管道壁上的反射形式和壁面边界层中的流动分离结构。结果表明，该测量系统为三维跨声速剪切流与激波相互作用提供了一种强有力的诊断工具，并将LIF方法应用于超声速空腔流中激波/自由剪切层相互作用的非定常三维流动测量。从时均温度和温度脉动的三维分布可以清楚地看到干扰场中的流动现象，即剪切层从凹腔前缘分离、凹腔后缘的脱体激波和凹腔内的旋涡结构。发现超声速空腔内存在三种不同类型的自持流动振荡。

项目成果

井上雅弘: "レーザー誘起蛍光法によるバンプ付ダクト内二次元遷音速流れ場の温度揺らぎ測定" 可視化情報. 15. 205-208 (1995)

Masahiro Inoue：“使用激光诱导荧光方法测量凹凸管道中二维跨音速流场的温度波动”可视化信息。 15. 205-208 (1995)

井上 雅弘: "AFエキシマレーザ誘起蛍光法による酸素分子の蛍光解析" 可視化情報学会誌. 17・2. 73-76 (1997)

Masahiro Inoue：“通过AF准分子激光诱导荧光法进行氧分子的荧光分析”可视化信息学会杂志17・2（1997）。

井上 雅弘: "レーザ誘起蛍光温度測定法による三次元遷音速流れ場の診断" 日本機械学会論文集 B編. 61-589. 3230-3235 (1995)

Masahiro Inoue：“使用激光诱导荧光测温法诊断三维跨音速流场”日本机械工程师学会会议录，卷 B. 3230-3235 (1995)。

井上雅弘: "レーザ誘起蛍光温度測定法による三次元遷音速流れ場の診断" 日本機械学会論文集B編. 61. 3230-3235 (1995)

Masahiro Inoue：“使用激光诱导荧光测温法诊断三维跨音速流场”日本机械工程师学会会议录，卷 B.61.3230-3235 (1995)

Masahiro INOUE: "Diagnosis of Three-Dimensional Transonic Flow Fields with Laser-Induced Iodine Fluorescence" Experimental and Numerical Flow Visualization,ASME,FED. 218. 163-170 (1995)

Masahiro INOUE：“用激光诱导碘荧光诊断三维跨音速流场”实验和数值流可视化，ASME，FED。