Results 1 to 10 of about 2,739 (265)
A new vortex scheme for viscous flows [PDF]
Journal of Computational Physics, 1990 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Dalia Fishelov
exaly +3 more sources
Optimal Control of a Passive Particle Advected by a Lamb–Oseen (Viscous) Vortex
Computation, 2022 This work concerns the optimal control of a passive particle in viscous flows. This is relevant since, while there are many studies on optimal control in inviscid flows, there is little to no work in this context for viscous flows, and viscosity cannot ...
Gil Marques +2 more
doaj +1 more source
A Wall Effects and Means of Controlling the Evolution of Swirling Flows with Vortex Breakdown [PDF]
Journal of Applied Fluid Mechanics, 2023 This paper investigates numerically the bubble-type vortex breakdown apparition in the case of closed rotating flows of a viscous, axisymmetric, and incompressible fluid.
A. Meziane +3 more
doaj +1 more source
On a new Lagrangian view on the evolution of vorticity in spatial flows [PDF]
Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2022 The purpose of the study is to extend to the spatial case proposed by G.B.Sizykh approach to a two-dimensional vorticity evolution, which is based on the idea of considering a vorticity evolution in the form of such a motion of vortex lines and tubes ...
Ivan A. Maksimenko, Vladimir V. Markov
doaj +1 more source
Shock and Vibration, 2022 This paper presents a modified fifth-order WENO-HLLC Riemann solver for the transonic compressible viscous flows around the helicopter rotor in hover. The HLLC approximate Riemann solver is proposed to discrete the convection term involving grid velocity
Li Xu, Fengfeng Zhao, Jingjing Cai
doaj +1 more source
The Physical vs. Mathematical Problem of Navier-Stokes Equations (NSE) [PDF]
INCAS Bulletin, 2023 The Navier-Stokes equations describing the motion of viscous/real fluids in Rn (n = 2 or 3) depend on a positive coefficient (the viscosity, ν) via the Reynolds number.
Horia DUMITRESCU +2 more
doaj +1 more source
Strong confinement of active microalgae leads to inversion of vortex flow and enhanced mixing
eLife, 2021 Microorganisms swimming through viscous fluids imprint their propulsion mechanisms in the flow fields they generate. Extreme confinement of these swimmers between rigid boundaries often arises in natural and technological contexts, yet measurements of ...
Debasmita Mondal +3 more
doaj +1 more source
Journal of Marine Science and Engineering, 2020 Planar motion mechanism (PMM) tests provide a means of obtaining the hydrodynamic derivatives needed to assess ship maneuverability properties. In this paper, the self-developed computational fluid dynamic (CFD) solver based on the open source code ...
Zhen Ren, Jianhua Wang, Decheng Wan
doaj +1 more source
Exact solutions to generalized plane Beltrami–Trkal and Ballabh flows
Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2020 Nonstationary plane flows of a viscous incompressible fluid in a potential field of external forces are considered. An elliptic partial differential equation is obtained, with each solution being a vortex flow stream function described by an exact ...
Eugenii Yurevich Prosviryakov
doaj +1 more source
Statistical Analysis of Dynamic Subgrid Modeling Approaches in Large Eddy Simulation
Aerospace, 2021 In large eddy simulation (LES) of turbulent flows, dynamic subgrid models would account for an average cascade of kinetic energy from the largest to the smallest scales of the flow.
Mohammad Khalid Hossen +2 more
doaj +1 more source