Zobrazeno 1 - 10
of 569
pro vyhledávání: '"A. Gelfgat"'
This work deals with stability of two-phase stratified air-water flows in horizontal circular pipes. For this purpose, we performed a linear stability analysis, which considers all possible three-dimensional infinitesimal disturbances and takes into
Externí odkaz:
http://arxiv.org/abs/2403.06002
Interfacial waves arising in a two-phase swirling flow driven by a low-frequency rotating magnetic field (RMF) are studied. At low RMF frequencies, of the order of 1-10 Hz, the oscillatory part of the induced Lorenz force becomes comparable to the ti
Externí odkaz:
http://arxiv.org/abs/2401.04045
Publikováno v:
Phys. Rev. Fluids 9, 023303 (2024)
We address the problem of steady laminar flow of a shear-thinning fluid in rectangular ducts, which is encountered in many systems, in particular, in microfluidic and biomedical devices. However, an exact solution for the flow of non-Newtonian fluids
Externí odkaz:
http://arxiv.org/abs/2310.01953
A numerical framework for rigorous linear stability analysis of two-phase stratified flows of two immiscible fluids in horizontal circular pipes is presented. For the first time, three-dimensional disturbances, including those at the interface betwee
Externí odkaz:
http://arxiv.org/abs/2302.13690
Electrocapillary-driven two-phase flows in a confined configuration of a classical experiment of Melcher and Taylor are studied. The computed streamlines of the flow of the heavier dielectric liquid (corn oil) qualitatively represents the correspondi
Externí odkaz:
http://arxiv.org/abs/2212.02208
Autor:
Gelfgat, Alexander
A sequence of three steady - oscillatory transitions of buoyancy convection of air in a laterally heated cube with perfectly thermally insulated horizontal and spanwise boundaries is studied. The problem is treated by Newton and Arnoldi methods based
Externí odkaz:
http://arxiv.org/abs/2210.08816
Autor:
Gelfgat, Alexander
Effect of interfacial disturbances on instabilities of buoyant/thermocapillary convective flows in rectangular cavities is studied in a series of numerical experiments. The computations are carried out for several two-liquid two-layer systems taking
Externí odkaz:
http://arxiv.org/abs/2201.12762
Autor:
Gelfgat, Alexander, Brauner, Neima
The linear stability of stratified two-phase flows in rectangular ducts is studied numerically. The linear stability analysis takes into account all possible infinitesimal three-dimensional disturbances and is carried out by solution of the associate
Externí odkaz:
http://arxiv.org/abs/2004.01384
Autor:
Gelfgat, Alexander
Publikováno v:
Phys. Rev. Fluids 5, 103904 (2020)
A parametric numerical study of three-dimensional instability of steady flows in a helical pipe of arbitrary curvature and torsion is carried out. The computations are performed by a numerical approach verified against independent experimental and nu
Externí odkaz:
http://arxiv.org/abs/2003.08643
Publikováno v:
Fluids, Vol 9, Iss 6, p 129 (2024)
The effect of a transverse magnetic field on two-phase stratified flow in horizontal and inclined channels is studied. The lower heavier phase is assumed to be an electrical conductor (e.g., liquid metal), while the upper lighter phase is fully diele
Externí odkaz:
https://doaj.org/article/83f4fb2cf0da4d8c91b6f92d80acc5d4
