Vortex Dynamics in Stirred Tank Mixer by Rotating Jets

Md. Tauhedul Azam; Donghyuk Kang; Hiroyuki Hirahara; Kazuhisa MURATA; Yasufumi SHIMOJI

doi:10.1299/jsmefed.2018.OS8-12

2018

Session ID : OS8-12

DOI https://doi.org/10.1299/jsmefed.2018.OS8-12

Conference information

Host: The Japan Society of Mechanical Engineers

Name : [in Japanese]

Date : November 29, 2018 - November 30, 2018

Vortex Dynamics in Stirred Tank Mixer by Rotating Jets

Md. Tauhedul Azam, Donghyuk Kang, Hiroyuki Hirahara, Kazuhisa MURATA, Yasufumi SHIMOJI

Author information

Keywords: Rotating Jets, Turbulent Mixing, Vorticity, Vortex Dynamics

CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract

This paper presents the vortex dynamics in a stirred tank mixer by rotating jet. Co-rotating vortices generated by neighboring jets merge into a single axisymmetric vortex. A short-wave perturbation during merging process provides an unstable counter-rotating vortex pair. The counter-rotating vortex pair generates a vortex shedding in the radial flow direction which gives oscillatory fluctuation on the flow field.

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