In classic theory,it is held that, in Sobolev Space [H 1(Ω)] 3, there is the upper bound of the norm of the constant rotating flow of the incompressible viscous fluid between two closed surfaces. It is inversely proportional to the viscosity of the fluid, and it will go to infinity when the viscosity goes to zero.
The generating and controlling system of the upstream runoff, downstream tidal current and rotational flow in the physical model test for the Yangtze River Estuary deep channel training project is introduced.
1. Under some conditions, the analytical expressions of the three-dimension rotary flow tangential velocity, radial velocity and axial velocity are derived from the Navier-Stokes equations for the first time, and their profile of distribution are analyzed.
Aiming to flow field of inner cavity in FW-φ150 compelling vortex horizontal turbine classifier, the paper founds model of three-dimension rotary flow field between vane of turbine classifier by the latest technology of Calculation Flow Dynamic (CFD), respectively considering shape of vane as straight and guild plate with backward bend, and makes digital simulation to turbulent kinetic energy in flow field.
The fluid in membrane separator annular gap is dependent on the principle of the hydrocyclone to generate rotary flow. In order to find the flow field characteristics,the advanced PIV system was applied in the test.
For the sake of optimizing the structure of scoop of gas centrifuge, the computer model-theory of equivalent round disk-for power consumption caused by slender obstacles in the rotary flow field was introduced.
The settling of a polydisperse powder in centrifuges is studied using a model of the motion of an isolated particle in a rapidly rotating flow of a viscous incompressible liquid.
Because the rotational flow of the internal groove reduced the effect of natural convection, the internal wall temperature of internally ribbed tube uniformly distributed along the circumference.
The numerical solution of the problem of the motion of a swirling flow of an ideal gas in a Laval nozzle in axisymmetric formulation is obtained by the method of stabilization.
Investigation of such a swirling flow in [1, 2] and a number of other papers are based on a one-dimensional model of gas flow, which makes it possible in principle to obtain integrated characteristics of the flow.