Drag reduction on the 25 degrees Ahmed body using a new zero-net-mass-flux flow control method

Wang Bingxin; Yang Zhigang; Zhu Hui

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Drag reduction on the 25 degrees Ahmed body using a new zero-net-mass-flux flow control method

机译：使用新的零净质量通量流量控制方法减少25度Ahmed Body

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摘要

Periodic-forcing jets are applied to form a zero-net-mass-flux actuator for active flow control study on the 25 degrees Ahmed body. Unlike traditional synthetic jet, this new proposed zero-net-mass-flux actuator has managed to divide the blowing phase and suction phase apart on different separation edges on the rear part of the body. Numerical simulation based on the large eddy simulation method is carried out on the near-wake flow to obtain both time-averaged and transient information of the flow field. The effects of the new actuators on the flow topology, the static pressure distribution and the process of the flow are analyzed to understand the mechanism of the drag reduction. Overcoming the drawbacks of the synthetic jet, our new zero-net-mass-flux actuator has successfully reduced the aerodynamic drag by a maximum of 25.5%.

机译：应用周期性强制喷射器以形成零净质量磁通致动器，用于对25度艾哈迈德的主体有主动流量控制研究。与传统的合成射流不同，这种新的提出的零净质量磁通致动器已经设法将吹吹相和抽吸相位分开在主体的后部的不同分离边缘上。基于大涡模拟方法的数值模拟在近唤醒流程上进行，获得流场的时间平均和瞬态信息。分析了新致动器对流体拓扑，静压分布和流程过程的影响，以了解减阻的机制。克服了合成射流的缺点，我们的新型零净质量磁通致动器已成功降低了空气动力学阻力，最大值为25.5％。

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来源
《Theoretical and Computational Fluid Dynamics》 |2019年第5期|共21页
作者
Wang Bingxin; Yang Zhigang; Zhu Hui;
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作者单位

Tongji Univ Shanghai Automot Wind Tunnel Ctr Shanghai 201804 Peoples R China;

Tongji Univ Shanghai Automot Wind Tunnel Ctr Shanghai 201804 Peoples R China;

Tongji Univ Shanghai Automot Wind Tunnel Ctr Shanghai 201804 Peoples R China;

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原文格式 PDF
正文语种 eng
中图分类流体力学;
关键词
Active flow control; Periodic-forcing jet; Drag reduction; Ahmed body;

机译：主动流量控制;定期强制喷射;减少减少;艾哈迈德的身体;

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专利

1. Drag reduction on the 25 degrees Ahmed body using a new zero-net-mass-flux flow control method [J] . Wang Bingxin, Yang Zhigang, Zhu Hui Theoretical and Computational Fluid Dynamics . 2019,第5期

机译：使用新的零净质量通量流量控制方法减少25度Ahmed Body
2. Drag reduction on the 25° slant angle Ahmed reference body using pulsed jets [J] . Pierric Joseph, Xavier Amandolèse, Jean-Luc Aider Experiments in Fluids . 2012,第5期

机译：使用脉冲射流减少25°倾斜角Ahmed参考物体上的阻力
3. Drag reduction on the 25° slant angle Ahmed reference body using pulsed jets [J] . Joseph P., Amandolèse X., Aider J.-L. Experiments in Fluids: Experimental Methods and Their Applications to Fluid Flow . 2012,第5期

机译：使用脉冲射流减少25°倾斜角Ahmed参考物体上的阻力
4. ACTIVE CONTROL METHODS FOR DRAG REDUCTION IN FLOW OVER BLUFF BODIES [C] . Haecheon Choi Proceedings of the 2002 ASME Joint U.S.-European Fluids Engineering Conference . 2002

机译：钝体流动减少的主动控制方法
5. Large eddy simulation of the flow around bluff body with drag reduction device. [D] . Al-Anazi, Khalid Qaied. 2010

机译：用减阻装置对阻流体周围的流动进行大涡模拟。
6. The avian tail reduces body parasite drag by controlling flow separation and vortex shedding. [O] . W. J. Maybury, J. M. Rayner 2001

机译：禽尾巴通过控制流动分离和涡旋脱落来减少身体寄生虫的阻力。
7. ACTIVE CONTROL METHODS FOR DRAG REDUCTION IN FLOW OVER BLUFF BODIES (Generation-Sustenance Mechanism and Statistical Law of Turbulence) [O] . Choi Haecheon 2002

机译：钝体流动减少的主动控制方法（产生-维持机制和湍流统计定律）
8. A transonic wind-tunnel investigation of the effects of body indentation, as specified by the transonic drag-rise rule, on the aerodynamic characteristics and flow phenomena of a 45 degree sweptback-wing-body combination [R] . Robinson, Harold L 1953

机译：跨声速风洞研究由跨音速阻力上升规则指定的体压痕对45度后掠翼体组合的气动特性和流动现象的影响

Drag reduction on the 25 degrees Ahmed body using a new zero-net-mass-flux flow control method

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