When a new structure is constructed in an overcrowded underground space, it necessary to consider how reduce the impact of on surrounding existing structures and ground, one methods under-pinning method using pipe jacking. The general term for reinforce lower part with piles pipes advance construction ground. In this study, various numerical analyses were carried out assuming that jacking was a...

This paper concerns the mathematical modelling of flow and solute transport through stormwater ponds. The model is based on appropriate lumped system conservation equations that are solved using standard numerical techniques. The model was used to route a first flush pollution scenario through a cylindrical pond for 16 combinations of elevation and diameter of a submerged pipe outlet, in conjun...

The slotted waveguide slow-wave stochastic cooling arrays are an integral part of the 4-8 GHz Debuncher Upgrade at FNAL. Unlike the standard array of stripline electrodes, these structures are designed to work when the beam pipe can support many microwave modes. The design theory and beam measurement results of this new type of pickup structure will be presented in this paper.

A heat pipe is a self-contained structure which achieves very high thermal conductance by means of two-phase fluid flow with capillary circulation. A quantitative engineering theory for the design and performance analysis of heat pipes is given. iynC QUALITY INSPECTED 3 Aoe*8sloQ For HTIS GRAAI DTIC TAB Unannounced JuatLfloatloa. ■^ 0 a

The paper describes a sophisticated method of combining two MT systems to obtain a new translation pair. Instead of a simple pipe, we use a complex data structure to pass the data from the first MT system to the second one. Evaluation results are reported for the language triplet Czech-Slovenian-Slovak.

Long-term Research Objective: The scientific objectives of this project are: 1. To describe and characterize the physical mechanisms which determine how most of the noise radiates from a finite fluid-filled pipe with turbulent flow. 2. To determine criteria which estimate the relative importance of these various mechanisms. 3. To develop experimental and analytical techniques for investigating ...

Direct numerical simulation of three-dimensional (3D) viscous flow in a wavy pipe is performed using the lattice Boltzmann approach, to study 3D flow features in a curved pipe with nonuniform curvature. We first validate the lattice Boltzmann approach by simulating a transient flow in a straight pipe. In a wavy pipe, it is shown that the pressure gradient necessary to drive the flow depends mor...

In this study, a nickel cladding layer with bionic convex strip structure was applied to the surface of an aluminum alloy drill pipe, and laser technology used improve wear resistance pipe. Firstly, by observing morphological characteristics shell surface, ratio width strips spacing between obtained as 0.39–0.53, thus model constructed. Numerical simulations were performed, results showed that ...

BACKGROUND Water pipe is a traditional method of tobacco use, which is epidemically spreading throughout Europe. There are scarce data about the use of water pipe and its relation to other addictive behaviors among young adults in Western countries. OBJECTIVES It was our aim to identify the sociodemographic characteristics of water pipe users in Switzerland and to describe concurrent cigarett...

Pipe vibration induced by water hammer frequently emerges in conveyance system, especially the hydropower plant or pumped storage power station with long diversion pipelines. This turn affects hydraulic pulsation so that undesired fluid-structure interaction (FSI) arises. In this research, attention is given to a pipeline embedded concrete. A six-equation model was derived describe fluid-pipe-c...