Lagrangian Vortex Particle Method for Complex Flow Simulation

Duong, Viet Dung and Lavi Rizki, Zuhal and Hari, Muhammad (2019) Lagrangian Vortex Particle Method for Complex Flow Simulation. In: The 5th International Conference on Engineering Mechanics and Automation (ICEMA 5), 11-12 October 2019, Vietnam National University-University of Science and Technology.

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Abstract

In order to solve complicated simulation problem for complex deforming objects under complicated motions found in aerospace, aerodynamic, meteorology, biology engineering, this paper presents Lagrangian vortex method based on Brinkman penalization. The Brinkman penalization acts as an external force, which is implicitly enforced into Navier-Stokes equation in the velocity-vorticity form. The advantage of the method is the capability to remove the pressure factor which causes errors in other numerical methods due to the complexity of shape of the object. Furthermore, the method is able to model the complex geometry, complex motions as well as 3D deformation of the object. In particular, the Navier-stokes equation can be solved in a classical strategy: applying Bio-Savart law formula is to deal with the convection process; employing fast multipole method to accelerate the velocity computation. The convergence is verified in several simulation applications such as air flow over low aspect ratio wing, rotation wings, influent of wind gust on high-raised building, and fish swimming.

Item Type:	Conference or Workshop Item (Paper)
Uncontrolled Keywords:	brinkman penalization, vortex particle method, complex flow applications
Subjects:	Aerospace Engineering Engineering Mechanics Engineering Physics Civil Engineering
Divisions:	School of Aerospace Engineering (SAE)
Depositing User:	Duong Viet Dung
Date Deposited:	27 Nov 2019 06:57
Last Modified:	27 Nov 2019 06:57
URI:	http://eprints.uet.vnu.edu.vn/eprints/id/eprint/3618

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