کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
727371 | 1461538 | 2014 | 14 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Improving the Delaunay tessellation particle tracking algorithm in the three-dimensional field Improving the Delaunay tessellation particle tracking algorithm in the three-dimensional field](/preview/png/727371.png)
• PTV algorithm is preferable in the reconstruction of 3D particle flow.
• We improve the Delaunay tessellation PTV and name it 3DT-PTV.
• 3DT-PTV is structurally compact and highly free of algorithmic assumptions.
• A testing process is realized by introducing synthetic flows with perturbations.
• The superiority of 3DT-PTV over the traditional version is confirmed.
Particle tracking velocimetry (PTV) algorithms match particles across two consecutive frames corresponding to a certain flow pattern. PTV based on Delaunay tessellation (DT-PTV) has a succinct structure and depends minimally on algorithmic assumptions. This study proposes several methods for improving DT-PTV performance in the three-dimensional field. The improved version, called 3DT-PTV, is tested using synthetic flows with various parameters and under difficult circumstances. Results show that 3DT-PTV performs better than the classical version in addressing flows with a noticeable ratio of particles without match and those with an excessive ratio of the inter-frame particle displacement to the inter-particle distance.
Journal: Measurement - Volume 49, March 2014, Pages 1–14