The purpose of this paper is to understand the mechanism of non-axisymmetric wall-thinning that caused a pipe break in the pipeline of the Mihama nuclear power plant in 2004. The wall thinning was caused by the flow accelerated corrosion which affects low carbon steel pipelines. The mass transfer rate measurement of the wall thinning behind an office in a curved swirling flow is carried out in ...

In order to solve the water sealing problem of soil between pipes of long distance curved pipe-jacked technology, Freeze-Sealing Pipe Roof (FSPR) as an innovative pre-supporting method in tunnel engineering is being applied to the Gongbei Tunnel in the Hong Kong-Zhuhai-Macau Bridge. The definition of FSPR is that large diameter steel pipes are laid out in a circle around the cross section of tu...

Abstract A Reynolds equation governing the steady flow of a fluid through curvilinear, narrow tube, with its derivation from Navier–Stokes equations asymptotic methods is presented. The channel considered may have rather large curvature and torsion. Approximations velocity pressure inside are constructed by artificially imposing appropriate boundary conditions at inlet outlet. justification for...

This paper describes a model based robot vision system for bin-picking of curved object utilizing range images. Surface properties and 3-D shape of the object are derived from the range image. This system extracts an object and detects its location and orientation based on models. The object is to be represented by a set of quadric curved surfaces. The Gaussian and the mean curvature are used a...