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Compact analogs of the models of vortex flows generated by aircraft flight
Авіаційно-космічна техніка та технологія, 2023 The subject of this work is the development of compact analogs of vortex flows models, which are used in the modeling of vortex structures observed during the flight of an aircraft and the motion of a body in a fluid.
Pavlo Lukianov, Lin Song
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Analytical Models Development of Compact Monopole Vortex Flows
Наукові вісті Національного технічного університету України "Київський політехнічний інститут", 2017 Background. Mathematical description of vortex flows as a part of basic fundamental concepts of continuum mechanics, hydro- and gas dynamics, thermal physics, theoretical basics of chemical engineering, geophysics, meteorology. Objective.
Pavlo V. Lukianov, Volodymyr M. Turick
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The vortex dynamics in incompressible viscous turbulent flows
, 2021 In this paper, we consider turbulence from a geometric perspective based on the vorticity equations for incompressible viscous fluid flows. We derive several quantitative statements about the statistics of turbulent flows. In particular we establish an entropy decay inequality which involves the turbulent kinetic energy and $L^{1}$-enstrophy, and we ...
Li, Jiawei, Qian, Zhongmin
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Low Reynolds Number Flow Around Tori of Different Slenderness Γ
Applied Sciences, 2017 We present the results of axisymmetric and three-dimensional numerical simulations of the flow around a torus in the low Reynolds number regime [ 10 − 2 ; 3 × 10 3 ] and aspect-ratio 0 < Γ = 2 a / R ≤ 2 (core diameter ...
Werner M. J. Lazeroms +4 more
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Dynamics of interaction of vortices in shear turbulent flows
Қарағанды университетінің хабаршысы. Физика сериясы, 2021 The paper analyzes the results of a theoretical study of quasi-two-dimensional turbulence, two-dimensional equations of motion of which contain additional terms.
А.Ж. Турмухамбетов +2 more
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A viscous flow analysis of the tip vortex generation process [PDF]
12th Fluid and Plasma Dynamics Conference, 1979 A three dimensional, forward-marching, viscous flow analysis is applied to the tip vortex generation problem. The equations include a streamwise momentum equation, a streamwise vorticity equation, a continuity equation, and a secondary flow stream function equation. The numerical method used combines a consistently split linearized scheme for parabolic
S. SHAMROTH, W. BRILEY
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Journal of Fluid Science and Technology, 2020 An immersed boundary method of discrete type is tested as a tool for direct numerical simulation of aeroacoustic sound. The numerical method consists of the WENO scheme, the immersed boundary method by Chaudhuri et al. (J. Comp. Phys. Vol. 230, 1731–1748
Kosei NISHIKAWA +2 more
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Computation of 3D Water Flows by the Double Potential Method for the Simulation of Electromagnetic Water Purification [PDF]
EPJ Web of Conferences, 2020 In this paper, we discuss the modeling of the electromagnetic water purification. This model requires a velocity distribution in a study domain. For that purpose, the double potential method for simulating incompressible viscous fluid flows was used. The
Tarasov Nikita +2 more
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Generalized boundary dilatation flux on a flexible wall
Theoretical and Applied Mechanics Letters, 2022 In this paper, by applying theoretical method to the governing equations of compressible viscous flow, we derive the theoretical formula of the boundary dilatation flux (BDF) on a flexible wall, which generalizes the most recent work of Mao et al.
Tao Chen, Tianshu Liu
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Turbulent coherent structures in channel flow with a wall-mounted hemisphere
AIP Advances, 2022 Turbulent channel flows around a wall-mounted hemisphere numerically are investigated by large eddy simulation, and the Reynolds number based on the hemisphere’s diameter is 3 × 104.
Jiahua Li +6 more
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