Characteristics of the flow around four cylinders of various shapes

VL Nguyen, T Nguyen-Thoi, VD Duong - Ocean Engineering, 2021 - Elsevier
Characteristics of flow around four cylinders of various shapes in the square configuration
were numerically investigated using a vortex-in-cell method. The flow patterns drastically …

The three-fluid generalized Ohm's law: A theoretical study

L Luo, X Xu, Y Zhang, Z Zhou, Q Chang, Q Xu… - Physics of …, 2023 - pubs.aip.org
The two-fluid generalized Ohm's law (GOL) is based on the assumption that plasma is
composed of only protons and electrons. The three-fluid GOL is obtained theoretically for the …

Topology and transport in generalized helical flows

P Chakraborty, A Roy, S Chakraborty - Physics of Fluids, 2021 - pubs.aip.org
Pure helical or screw flow presents a unique combination of zero net advection, alignment of
vorticity dissipation with vorticity field, and maximal helicity. Helicity is a measure of …

Turbulent energy cascade associated with viscous reconnection of two vortex rings

VL Nguyen, TT Phan, VD Duong, NTP Le - Physics of Fluids, 2021 - pubs.aip.org
Collision of two vortex rings (VR) initially arranged in axis-offset and orthogonal
configurations at Reynolds numbers (⁠ R e Γ⁠) in the range of 5000–200 000 was …

Shock wave formation from head-on collision of two subsonic vortex rings

RL Bauer, CJ Thomas, EVP Baker, EM Johnson… - Scientific Reports, 2022 - nature.com
Vortex ring collisions have attracted intense interest in both water and air studies (Baird in
Proc R Soc Lond Ser Math Phys Sci 409: 59–65, 1987, Poudel et al. in Phys Fluids 33 …

Vortex-in-cell simulation of the flow and performance of a Savonius hydraulic turbine with S-shaped blades

K Takamure, H Wang, T Uchiyama, S Iio… - Journal of Renewable …, 2021 - pubs.aip.org
The volume penalization vortex-in-cell (VP-VIC) method, which combines the vortex-in-cell
and vortex penalization methods, is a kind of immersed boundary method that has the …

Low order modeling of dynamic stall using vortex particle method and dynamic mode decomposition

VD Nguyen, VD Duong, MH Trinh… - … Journal of Micro Air …, 2023 - journals.sagepub.com
Low order modelings are performed in this paper, including iterative Brinkman penalized
vortex method (IBVM) and data-driven dynamic mode decomposition (DMD) for dynamic …

Vortex particle method with iterative Brinkman penalization for simulation of flow past sharp-shape bodies

VD Duong, LR Zuhal - International Journal of Micro Air …, 2022 - journals.sagepub.com
This paper presents a Lagrangian vortex method combined with iterative Brinkman
penalization for the simulation of incompressible flow past a complex geometry. In the …

Oblique collision and reconnection of a vortex ring with a vortex tube

VL Nguyen, LH Duong, NTP Le - Physics of Fluids, 2021 - pubs.aip.org
The oblique collision and reconnection of a vortex ring and a vortex tube are numerically
investigated using a sixth-order accurate vortex-in-cell method. At the oblique collision angle …

Turbulent Energy Cascade and Mixing Induced by the Axis-Offset Collision of Two Vortex Rings

VL Nguyen - Fluid Dynamics, 2022 - Springer
The axis-offset collision of two vortex rings with their various circulation ratios was
numerically investigated using the vortex-in-cell method combined with the large-eddy …