长江科学院院报2017，Vol.34Issue(7)：144-148,5.DOI:10.11988/ckyyb.20160234
一种改进的粒子图像测速混合算法研究
An Improved Hybrid Algorithm for Particle Image Velocimetry
摘要
Abstract
As a new method of flow velocity measurement, particle image velocimetry (PIV) could obtain velocity information of the whole flow field without disturbing the flow field.The most critical step in PIV is particle matching.A hybrid algorithm combining cross-correlation algorithm and relaxation algorithm is proposed in view of the actual conditions of uneven distribution of particle density and different flow fields.The hybrid algorithm could search the particles more accurately so as to match the particles.The matching probabilities of three matching algorithms are compared and results suggest that the hybrid algorithm can analyze the motion state of particles more accurately and reduce the generation of error vectors.In addition, the relaxation algorithm is improved in this paper.By optimizing weighting factor, the running speed of the improved relaxation algorithm has greatly improved compared with the original algorithm, while the matching rate is basically consistent with the original algorithm.关键词
流场速度/粒子图像测速/混合算法/超松弛迭代粒子追踪/粒子匹配/匹配概率Key words
velocity of flow field/particle image velocimetry/hybrid algorithm/particle tracking based on successive over relaxation/particle matching/matching probability分类
数理科学引用本文复制引用
王甜,房红兵,黄海龙,王驰..一种改进的粒子图像测速混合算法研究[J].长江科学院院报,2017,34(7):144-148,5.基金项目
中央级公益性科研院所基本科研业务费专项基金(2011YQ070055) （2011YQ070055）
