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首页> 外文会议>ASME International Mechanical Engineering Congress and Exposition >SCHLIEREN AND SHADOWGRAPH IMAGES OF TRANSIENT EXPANDING SPHERICAL THIN FLAMES
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SCHLIEREN AND SHADOWGRAPH IMAGES OF TRANSIENT EXPANDING SPHERICAL THIN FLAMES

机译：Schlieren和瞬态膨胀球形薄火焰的影子图象

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Experimental facilities have been built to visualize transient expanding spherical flames. Facilities include a cylindrical chamber with two end glasses for optical observation. Shadowgraph and Schlieren pictures of flame propagation have been taken using a high speed Charged Coupled Device (CCD) camera. In this paper the optical behavior of spherical flames has been investigated using both Schlieren and Shadowgraph methods. A mathematical model has been developed to predict the intensity of refracted light beams interacting with a transient expanding thin flame. Experimental results are in very good agreement with theoretical model. Schlieren and Shadowgraph techniques have also been used to view smooth, cracked and cellular flames, which are useful in determining the stability of propagating flame.
机译：建立了实验设施以可视化瞬态膨胀球形火焰。设施包括一个圆柱形腔室，具有两个端身，用于光学观察。已经使用高速带电耦合装置（CCD）相机进行了发光的火焰传播的影子图和Schlieren图片。在本文中，使用Schlieren和Shadowgraph方法研究了球形火焰的光学行为。已经开发了一种数学模型来预测与瞬态膨胀薄火焰相互作用的折射光束的强度。实验结果与理论模型非常好。 Schlieren和影子图技术也已用于观察光滑，破裂和细胞火焰，这对于确定繁殖火焰的稳定性是有用的。

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