Published in Fluid Dynamics
AbstractDuring the electrochemical machining of metals, cavitation appears in the interelectrode gap in places with a decreased static pressure. A two-dimensional problem associated with the determination of the shape of the surface being treated taking into account attached cavitation is solved within the “ideal process” model of electrochemical m...
Published in Fluid Dynamics
AbstractA numerical and analytical solution of the full equations of the physical theory of a meteoroid (PTM, braking, energy, and trajectory-inclination equations) as a single body is given. Using the method of successive approximations, expressions for the dimensionless velocity and mass are obtained taking into account the variability of the inc...
Published in Fluid Dynamics
AbstractThe problem of surface-wave far-field generation from a localized source that flashed in a heavy liquid of finite depth is investigated. Integral representations of the solution are constructed that describe the structure of wave surface disturbances. The characteristics of the excited wave fields far from the source of disturbances are stu...
Published in Fluid Dynamics
AbstractIn this paper, we propose an effective computational mathematical interpretation of the problem of the nonequilibrium flow of a polyatomic gas in a kinetic thin viscous shock layer near a blunt body in the plane of its symmetry. The correlation of flows in the kinetic and Navier–Stokes thin viscous shock layer on the frontal spreading line,...
Published in Fluid Dynamics
AbstractThis work considers the angle of the sonic-line attachment to the surface in flows with uniform fields of entropy and total enthalpy. A rigorous study of the Euler equations (without the use of asymptotic, numerical, and other approximate methods) is carried out. Plane-parallel and nonswirling axisymmetric flows are considered. It is shown ...
Published in Fluid Dynamics
AbstractIn this work, the evolution of a flow of a viscous electrically conductive fluid on a rotating plate in the presence of a magnetic field is studied. The analytical solution of three-dimensional unsteady equations of magnetohydrodynamics is presented. The velocity field and the induced magnetic field in the flow of a viscous electrically con...
Published in Fluid Dynamics
Abstract—The occurrence of turbulent pulsations in straight pipes of noncircular cross-section leads to the situation, when the average velocity field includes not only the longitudinal component but also transverse components that form a secondary flow. This hydrodynamic phenomenon discovered at the twenties of the last century (J. Nikuradse, L. P...
Published in Fluid Dynamics
Abstract—In this paper, the instabilities during liquid jet impingement on a flat plate are characterized using a coupled numerical-analytical method. When a liquid jet impacts on a substrate, the liquid jet spreads on the substrate, and at a certain radius from the impact point, a circular hydraulic jump is observed in the experiments. Under certa...
Published in Fluid Dynamics
Abstract—High-resolving photo and videorecording was used to visualize the fine structure of the flow pattern upon the coalescence of a droplet, \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{...
Published in Fluid Dynamics
Abstract—Mass exchange between the atmosphere of turbulent vortex ring and the surrounding medium is investigated in the initial stage of motion using the shadow visualization method. For this purpose, vortex rings in which the liquid has a different density as compared with the density of the surrounding medium are generated. The experiments are c...
