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首页> 外文会议>Recent researches in mechanical engineering >Building and calibrating an open circuit wind tunnel with visualization and measuring turbulent characteristic of flow and their dependence on screens and honey comb
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Building and calibrating an open circuit wind tunnel with visualization and measuring turbulent characteristic of flow and their dependence on screens and honey comb

机译：通过可视化和测量流动的湍流特性以及它们对筛网和蜜梳的依赖关系来构建和校准开路风洞

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摘要

This paper is focus on design, building and calibrating a small open circuit wind tunnel and measuring turbulent characteristic of flow such as kurtosis, skewness , standard deviation, turbulence intensity and variance of flow by hot wire anemometer and dependence of them on velocity and screen meshes and honey comb in the wind tunnel. This wind tunnel specially built for stability and transition studying around rotating bodies, so we built a smoke generator in order to show the transition region on the boundary layer of models. This paper includes some pictures that were made by flow visualization on rotating bodies. In this paper we also measure pressure coefficient around a cylinder and drag coefficient around a sphere and compare our result by some another same experiments, also we visualize flow around sphere in Reynolds 11500.
机译：本文着重于设计，建造和校准小型开路风洞，并通过热线风速计测量流量的湍流特性，例如峰度，偏度，标准偏差，湍流强度和流量变化，以及它们对速度和筛网的依赖性。和蜂蜜梳在风洞中。该风洞是专门为围绕旋转物体进行稳定性和过渡研究而建造的，因此我们建造了烟雾发生器，以在模型边界层上显示过渡区域。本文包括一些通过流动可视化在旋转物体上拍摄的照片。在本文中，我们还测量了圆柱体周围的压力系数和球体周围的阻力系数，并通过其他一些相同的实验对我们的结果进行了比较，并在雷诺11500中可视化了球体周围的流动。

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