Hydrodynamics of Euglena Gracilis during locomotion

作     者：Fahrettin Gokhan Ergin Fahrettin G?khan Ergin

作者机构：Product ManagementDantec Dynamics A/SSkovlundeDenmark 

出 版 物：《Journal of Hydrodynamics》 (水动力学研究与进展B辑（英文版）)

年 卷 期：2021年第33卷第1期

页      面：120-126页

核心收录：

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 080401[工学-精密仪器及机械] 0807[工学-动力工程及工程热物理] 0804[工学-仪器科学与技术] 0801[工学-力学（可授工学、理学学位）] 

主　　题：Euglena Gracilis(E.Gracilis)locomotion micro particle image velocimetry(MicroPIV) dynamic masking 

摘      要：The hydrodynamics and locomotion mechanism of Euglena Gracilis(***)is investigated using microscopic shadow imaging and micro particle image velocimetry(MicroPIV).Three distinct locomotion modes were observed:translation,spin,and left/right *** the flagellum was not possible to image,the strokes were identified by evaluating the flow field around the *** flow field information is obtained using a phase-separated PIV evaluation,which uses a histogram-thresholding based dynamic masking *** temporal resolution of the experiment was sufficient to identify the sequence of two modes,translation and spin,and the stroke-pulling *** flow field result during a stroke is compared with existing Stokeslet dipole theories and flow disturbance decay with distance is *** results indicate that the organism has a complex locomotion technique that allows the change of direction,axial orientation and propulsion.