The Advection–Diffusion Analysis of Smoke Flows Around a Body

The Advection–Diffusion Analysis of Smoke Flows Around a Body
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物体周围烟雾流的平流扩散分析

DOI：
10.1007/978-3-319-40827-9_5
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发表时间：
2016
期刊：
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影响因子：
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通讯作者：
Takehiro Kobayashi
Takehiro Kobayashi
中科院分区：
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文献类型：
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作者：
T. Nomura;H. Hasebe;Takehiro Kobayashi

文献摘要

相似文献

空气中的海盐腐蚀是沿海地区桥梁的重要问题之一。为了评价其平流扩散行为，进行了一种特殊的风洞实验，在该实验中，方形圆柱体周围的流动被烟雾可视化。由单色高速摄像机记录的每一帧的亮度数据被数字化并转换为烟雾浓度。对平流扩散方程进行了SUPG有限元分析，并与实验数据进行了比较。因此，各向同性扩散分析的结果并不令人满意，但湍流扩散分析给出了与实验最接近的结果。
The corrosion due to airborne sea salt is among significant problems for bridges located in coastal area. In order to evaluate its advection diffusion behavior, a special wind tunnel experiment is conducted in which the flow around a square cylinder is visualized by smoke. The brightness data of each frame recorded by a mono-chromatic high-speed camera is digitized and transformed to concentration of the smoke. The SUPG finite element analysis of the advection diffusion equation is conducted and compared with the experimental data. Consequently, the results of the isotropic diffusion analysis is not satisfactory, but the turbulent diffusion analysis gives the result closest to the experiment.