BOUNDARY LAYER SEPARATION CONTROL USING VORTEX GENERATOR JETS

使用涡流发生器喷射器进行边界层分离控制

• 批准号: 10650159
• 负责人: MATSUUCHI Kazuo
• 金额: $ 0.64万
• 依托单位: University of Tsukuba
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650159/
• 关键词: FLOW SEPARATION CONTROL; VORTEX GENERATOR; DIFFUSER; JET; ADAPTIVE CONTROL; はく離; 境界層; 縦渦; 能動制御; 渦発生装置

Jets issuing through small holes in a wall into a freestream have proven effective in the control of boundary layer separation. Longitudinal vortices are produced by the interaction between the jets and the freestream. The mechanism for suppressing flow separation was studied experimentally by making a comparison between the effect of steady jets and that of pulsed jets on generating longitudinal vortices. The effect of the jet pitch angle and jet to freestream velocity ratio on suppressing flow separation was studied. Secondary flow fields at several downstream locations were measured to know the behavior of longitudinal vortices. The most important results for attaining the suppression of separation control are that not only the vortices are strong but also they continue to be near the wall.Vortex generator jets can be adapted for various flow changes. This is an advantageous characteristic compared with the case of solid vortex generator. An active separation control feedback system was developed based on the knowledge on the separation control mechanism. The system has been actually applied to several flow conditions and has been confirmed to be useful.

喷流通过壁面上的小孔进入自由涡系，已证明对控制附面层分离是有效的。纵向涡流是由射流和自由流之间的相互作用产生的。通过对定常射流和脉冲射流产生纵向涡的影响进行对比，对射流抑制分离的机理进行了实验研究。研究了射流俯仰角和射流速度比对抑制流动分离的影响。测量了下游几个位置的二次流场，以了解纵向涡的行为。实现分离控制抑制的最重要的结果是，不仅涡流很强，而且它们继续靠近壁面。涡流发生器射流可以适应各种流动变化。与固体涡流发生器的情况相比，这是一个有利的特性。基于对分离控制机理的认识，设计了主动分离控制反馈系统。该系统已被实际应用于几种流动条件，并已被证实是有用的。

项目成果

Hasegawa, H., Matsuuchi, K.: "Effect of Jet Pitch Angle of Vortex Generator Jets on Suppressing Flow Separation"Trans. JSME. B64-627. 3690-3696 (1998)

长谷川，H.，松内，K.：“涡流发生器射流的射流螺距角对抑制流动分离的影响”，Trans。

Hasegawa, H., Matsuuchi, K., and Tanaka, J.: "Development of an Active Separation Control System Using Vortex Generator Jets"Proc. 3ィイD1rdィエD1 ASME/JSME Joint Fluids Eng. Conf.. FEDSM99-6944. (1999)

Hasekawa, H.、Matsuuchi, K. 和 Tanaka, J.：“使用涡流发生器喷射的主动分离控制系统的开发”Proc 6944。

松内 一雄: "パルス吹出しの縦渦発生ジェットが縦渦に及ぼす影響" 日本機械学会講演論文集. (未定). (1999)

Kazuo Matsuchi：“脉冲喷射产生纵向涡流对纵向涡流的影响”日本机械工程师学会会议记录（TBD）（1999 年）。

松内 一雄: "Development of an Active Separation Control System Using Vortex Generator Jets" Proc.3^<rd> ASME/JSME Joint Fluids Eng.Conf.(未定). (1999)

Kazuo Matsuchi：“使用涡流发生器射流开发主动分离控制系统”Proc.3^<rd> ASME/JSME Joint Fluids Eng.Conf (1999)。

長谷川裕晃: "The Mechanism of Active Boundary Layer Control using Vortex Generator Jets"ICAS-98. 3.4.3. 1-9 (1998)

Hiroaki Hasekawa：“使用涡流发生器射流的主动边界层控制机制”ICAS-98 1-9 (1998)。