Investigation of Backward-Facing-Step Flow Field for Dynamic Interface Application

Yavuz Nacakli; Drew Landman; Stargel Doane

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Investigation of Backward-Facing-Step Flow Field for Dynamic Interface Application

机译：动态界面应用中向后步流场的研究

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A research program to investigate helicopter downwash and frigate airwake interaction has been initiated using a statistically robust experimental program featuring design of experiments. Engineering analysis of the helicopter/frigate interface is complicated by the fact that two flow fields become inherently coupled as a separation distance decreases. The work presented was performed in the Old Dominion University 7 × 8 ft Low-Speed Wind Tunnel using a simplified 1/50-scale frigate waterline model and traverse-mounted powered rotor with thrust measurement capability. Particle image velocimetry velocity surveys were acquired with rotor thrust coefficient measurements at coincident locations to help understand the underlying flow physics.

机译：使用具有实验设计功能的统计上强大的实验程序，已经启动了一项研究计划，以调查直升机的下冲和护卫舰空中苏醒的相互作用。直升飞机/护卫舰接口的工程分析由于以下事实而变得复杂，即两个流场随着间隔距离的减小而固有地耦合。提出的工作是在Old Dominion大学的7×8英尺低速风洞中进行的，使用简化的1/50比例护卫舰水线模型和带有推力测量功能的横向安装动力转子。粒子图像测速速度调查是在重合位置使用转子推力系数测量来获取的，以帮助理解基本的流动物理学。

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《Journal of the American Helicopter Society》 |2012年第3期|p.032005.1-032005.9|共9页
作者
Yavuz Nacakli; Drew Landman; Stargel Doane;
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作者单位

112th Airlift Base, Turkish Air Force, Kayseri, Turkey;

Department of Aerospace Engineering, Old Dominion University, Norfolk, VA;

Department of Aerospace Engineering, Old Dominion University, Norfolk, VA;

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Investigation of Backward-Facing-Step Flow Field for Dynamic Interface Application

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