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首页> 外文会议>Canadian Congress of Applied Mechanics(CANCAM 2005); 20050530-0602; Montreal(CA) >Experimental Characterization of a Tethered Spherical Helium Balloon in an Outdoor Environment
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Experimental Characterization of a Tethered Spherical Helium Balloon in an Outdoor Environment

机译：系留球形氦气球在室外环境中的实验表征

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摘要

Tethered helium balloons are known to be useful in applications where a payload must be deployed at altitude for a long duration. However there exists little data about light tethered spheres in a fluid stream. Govardhan & Williamson have recently studied such systems in a controlled laboratory environment. Research on outdoor spherical helium balloons is mainly limited to free meteorological spheres for wind boundary layer measurements. There is thus a need for experimental data on tethered spheres in an outdoor environment. The present work focuses on the experimental characterization of a 3.5 m tethered spherical helium balloon in turbulent winds. The results obtained are compared to those of Govardhan & Williamson and to accepted results from literature. This study will provide the input parameters for the simulation of a tethered helium sphere in wind, which we are pursuing separately.
机译：已知束缚氦气球在必须在高空长时间部署有效载荷的应用中很有用。但是，关于流体流中的轻束缚球的数据很少。 Govardhan＆Williamson最近在受控实验室环境中研究了此类系统。室外球形氦气球的研究主要限于用于风边界层测量的自由气象球。因此，需要在室外环境中的系留球上的实验数据。本工作着重于湍流风中3.5 m系留球形氦气球的实验表征。将获得的结果与Govardhan＆Williamson的结果进行比较，并与文献接受的结果进行比较。这项研究将为模拟风中的束缚氦球提供输入参数，我们将分别进行研究。

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