A novel particle tracking velocimetry method for complex granular flow field<xref rid="cpb_29_1_014207fn1" ref-type="fn">*</xref><fn id="cpb_29_1_014207fn1"><label>*</label><p>Project supported by the National Natural Science Foundation of China (Grant Nos. 11572201 and 91634202).</p></fn>

A novel particle tracking velocimetry method for complex granular flow field**

Project supported by the National Natural Science Foundation of China (Grant Nos. 11572201 and 91634202).

Wang Bi-De¹, Song Jian¹, Li Ran², Han Ren¹, Zheng Gang², Yang Hui^{1, †}

Velocity distribution of vertical position region of central axis.