Hydrodynamic mechanical seal is the most active fields in modern sealing technology, while there are few studies on hydrostatic mechanical seal relatively, the study on convergent gap mechanical seal is hardly paid more attention to.

Using the software of computational fluid dynamics (CFD), the steady, one-dimensional flow in convergent wedgelike gap was numerically simulated.

BGP convergence time is studied on the basis of dispute digraph, which reveals the relationships between routing policies of different autonomous systems.

In this paper,a simplified Newton Raphson Power Flow method with Jacobin Mattrix is proposed in order to decrease the convergence time.

Increment message technique is used in topology update system to reduce the convergence time and the routing overhead when the topology of network is changed by reducing the size of the topology update packet.

the smooth region, the transition region and the rough region) and given the convergence interval.

This paper has studied the convergence of iteration algorithm about common industrial pipes resistance factor in smooth region of turbulent flow and given the convergence interval.

We obtain a sufficient condition and a essential - sufficient condition about convergence at the end point of the convergence interval of power series.