نتایج جستجو برای: water supply tunnel
تعداد نتایج: 723585 فیلتر نتایج به سال:
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The planned new Heavy Ion Synchrotron SIS 100/300 for the FAIR Project will consist of two separate tunnels. In addition to the tunnel where the beam lines itself will be situated, there will be an additional tunnel, for maintenance and supply purposes. This maintenance tunnel is desired to be accessible for technical personnel also during beam operation. Therefore, from the radiation safety po...
The environmental requirement of the river is the amount of water to maintain natural ecological conditions and health of quality of the river water. In this study, to estimate the environmental water requirement of Karoun River, Dez, Great Karoun and Beheshtabad sub-basin (upper Karoun) using hydrological Montana method and offers based on frequency analysis of hydrological flow normally and u...
anterior transposition of the ulnar nerve is widely implemented for treatment of cubital tunnel syndrome. however, preservation of the extrinsic blood supply of the ulnar nerve may result in better clinical outcomes. fourteen patients with cubital tunnel syndrome, 11 men and 3 women, were treated by anterior subcutaneous transposition of the ulnar nerve. the extrinsic blood supply of the ul...
In the past decade, evolutionary methods have been used by various researchers to tackle optimal design problems for water supply systems (WSS). Particle Swarm Optimization (PSO) is one of these evolutionary algorithms which, in spite of the fact that it has primarily been developed for the solution of optimization problems with continuous variables, has been successfully adapted in other conte...
Two important tunnel safety technologies are addressed. The majority of long road tunnels have ventilation systems. In the event of a fire in a tunnel, such systems will influence fire development in a number of different ways. Recent research and observations on these influences are presented. The effects discussed are critical ventilation velocity for smoke control and the influence of ventil...
This study deals with the numerical modeling of symmetrical water entry of tunneled sections. In this study, firstly, the water entry problem of a wedge section without tunnel in four different deadrise angles was numerically modeled. The obtained results related to the pressure distribution on these sections and the maximum pressure have been compared with the experiment results. In the next s...
There is a pressure tunnel as the type of structures, which is mainly used in the hydroelectric power industry and in order to design and construct these structures, there are many engineering challenges. One of these problems is the leakage around the tunnel and, consequently, erosion caused by excessive water pressure, and it will lead to instability and the destruction of pressure tunnels. T...
Coefficients or hydrodynamic derivatives of autonomous underwater vehicles play a key role in their development. The most popular way for the estimation of coefficient is to implement captive model tests such as straight line tests and planar motion mechanism tests in towing tanks. In this paper, investigation of hydrodynamic derivatives was performed based on the water tunnel maneuvers. Forces...
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