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Unsteady Vortex Dynamics of Two-Dimensional Pitching Flat Plate Using Lagrangian Vortex Method

Viet Dung, Duong and Lavi Rizki, Zuhal and Hari, Muhammad (2021) Unsteady Vortex Dynamics of Two-Dimensional Pitching Flat Plate Using Lagrangian Vortex Method. In: 2021 International Symposium on Electrical, Electronics and Information Engineering (ISEEIE 2021), 19-21, February, 2021, Seoul, Republic of Korea.

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Vortex dynamics of wakes generated by two-dimensional rectan-gular pitching flat plates in free stream are examined with directnumerical simulation using Lagrangian vortex method. The devel-oped method simulates external flow around complex geometryby tracking local velocities and vorticities of particles, introducedwithin the fluid domain. The viscous effect is modeled using acore spreading method coupled with the splitting and merging spa-tial adaptation scheme. The particle’s velocity is calculated usingBiot-Savart formulation. To accelerate computation, Fast MultipoleMethod (FMM) is employed. The solver is validated by perform-ing an impulsively started cylinder at Reynolds number 550. Theresults of the computation have reasonable agreement with refer-ences listed in literature. For the vortex dynamics of pitching flatplate, the detaching LEV creates a remarkable peak in the lift forcebefore the end of motion for the different pitching cases. For thelow Reynolds number, force generated by the pitching flat plateis fairly independent of Reynolds numbers. The current studiesalso observed that TEV produced at higher Reynolds number has astronger suction than that at smaller Reynolds numbers.

Item Type: Conference or Workshop Item (Paper)
Subjects: Aerospace Engineering
Engineering Mechanics
Divisions: School of Aerospace Engineering (SAE)
Depositing User: Duong Viet Dung
Date Deposited: 31 May 2021 11:03
Last Modified: 31 May 2021 11:03

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