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王大伟, 王元, 杨斌. 风沙两相流PIV测量算法研究[J]. 力学学报, 2006, 38(3): 302-308. DOI: 10.6052/0459-1879-2006-3-2004-425
引用本文: 王大伟, 王元, 杨斌. 风沙两相流PIV测量算法研究[J]. 力学学报, 2006, 38(3): 302-308. DOI: 10.6052/0459-1879-2006-3-2004-425
An algorithm in piv measurement of wind-sand two-phase flow[J]. Chinese Journal of Theoretical and Applied Mechanics, 2006, 38(3): 302-308. DOI: 10.6052/0459-1879-2006-3-2004-425
Citation: An algorithm in piv measurement of wind-sand two-phase flow[J]. Chinese Journal of Theoretical and Applied Mechanics, 2006, 38(3): 302-308. DOI: 10.6052/0459-1879-2006-3-2004-425

风沙两相流PIV测量算法研究

An algorithm in piv measurement of wind-sand two-phase flow

  • 摘要: 在风沙两相流图像特征的基础上,提出了一种基于模式识别动态聚类方法中K-均值算法的数字面具(Digital Mask)自动生成算法来求解风沙两相流动. 简化了传统生成DigitalMask过程中手动设置参数的操作,减少了人为误差,为批量处理风沙两相流PIV图像提供了一种安全快捷的方法. 并将该算法应用于风沙两相流的PIV实际测量,分别得到了不同流动状态下的气流、沙粒以及风沙气固两相流的速度场.

     

    Abstract: On the basis of characteristics of wind-sand two-phase flow CCDimages, an auto generated Digital Mask algorithm based on K-mean valuealgorithm of pattern recognition's dynamic clustering method is proposed tosolve the wind-sand two-phase flow. This algorithm simplifies the manualsetting operation of parameters in the process of the traditional generation ofDigital Mask, reduces the man-made error, and provides a safe and fastmethod to process two-phase PIV images in batch. Finally, this algorithm isapplied to real measurements of wind-sand two-phase flow. After computation,the flow fields of the phase of the wind, the phase of the sand and thetwo-phase of the wind-sand of different flow types are obtained.

     

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