نتایج جستجو برای: plexiglas
تعداد نتایج: 488 فیلتر نتایج به سال:
Discrete Element Method (DEM) is extensively used for mathematical modeling and simulating the behavior of discrete discs and discrete spheres in two and three dimensional space, respectively. Prediction of particles flow regime, power draw and kinetic energy for a laboratory or an industrial mill is possible by DEM simulation. In this article, a new approach was used to assess the main paramet...
River bend due to particular pattern, called 'Vortex Flow,' has greater erosion than straight path. Occurrence of scour around bridge abutment on curved paths is one of the main reasons for destruction of bridges. Riprap is one of the methods to control the scouring around the bridge abutment. The purpose of this study was to assess stability of the riprap around the bridge abutment at 180 degr...
One of the methods for sediment control in lateral intake can be application of submerged vanes in front of the inlet. The establishment of submerged vanes in flow path causes a flow diversion toward the inner arc. In this research, the performance of submerged vanes on sediment transport to the inlet at 180 degree of intake has been investigated. Several experiments were carried out in a labor...
Three-dimensional tools are widely used for various purposes, particularly Three- dimensional printers which play a great role in simplification and acceleration of phases in production process for various fields ranging from medicine to industry. Due to the problems related to the reconstruction of missing parts in restoration of historic glass objects in the methods of molding, casting and f...
This paper investigates proppant flow and transport in intersected fractures at angles typical for intersections of pre-existing new hydraulic fractures. Proppant is small granular material, which placed into during geothermal hydrocarbon reservoir stimulation props the fluid paths open exploitation. study uses plexiglas laboratory slot experiments enhanced with advanced image analysis identify...
A new methodology for implementing radioactive particle tracking (RPT) in bubble columns with intense vertical rod internals was developed and implemented to investigate the effect of dense on hydrodynamics. The utilizes a hybrid Monte Carlo N-Particle (MCNP) simulation an automated RPT calibration device generate large number points accurate reconstruction instantaneous positions particles usi...
Abstract The aim of this study is to separate PET flakes by applying floatation technique, initially from binary polymer blends and later the mixture five common polymers such as polypropylene, polyethylene, poly(vinyl chloride), polstyrene poly(ethylene terephthalate). A connection line between fiber presumed in study, because dyeing recovered polyester with three disperse dyes followed. separ...
In this research, the effect of installing position of bridge pier on scouring depth was studied in a bend laboratory flume, which is made of Plexiglas with 180 bend and a relative radius of Rc/B=4.7. Tests were conducted using one pier 6 cm in diameter under four discharge conditions with constant depth of 12 cm and clear-water conditions. Flume bed was fully paved by uniform sand. It was foun...
Distortions of magnetic resonance images near solid-liquid interface appear as the result of the restriction to spin self-diffusion in the proximity of impermeable boundary as well as of a susceptibility difference. The spectral analysis of spin echo enables to resolve, in a simple way, how various RF-gradient pulse sequences reduce the effect of the internal magnetic field induced by the susce...
Free radical polymerization is one of the most widely employed polymerization techniques. This technique is applied to prepare latexes to be used in paints, high molecular weight poly (methyl methacrylate) for safety glass (Plexiglas), or foamed poly (styrene) to be applied in coffee cups. Some advantages of radical polymerizations, with respect to other techniques, are the relative insensitivi...
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