类鱼雷形涡中速度场,速度矢量场,PIV,粒子成像测速检测方案(粒子图像测速)
检测样品 其他
检测项目 速度场,速度矢量场,PIV,粒子成像测速
北京欧兰科技发展有限公司
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方案详情文
The flow field of a laboratory-simulated tornado was studied by means of 2-D Particle
Image Velocimetry or PIV technique with the purpose of investigating the effects of roughness on
the near-ground tornado-like vortex structure and its velocity distribution. The results show the flow
regime transition from multi-celled vortices over the smooth surface at a higher swirl ratio to singleor
dual-celled vortices with roughness. Significant difference in velocities and turbulence
characteristics is observed as a result of increasing ground roughness. This work is part of a project
that seeks better understanding of the near-ground flow field and resulting wind-induced loads on
structures in a tornado.
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