Articles techniques et présentations

Humanity is faced with an imminent energy crisis. The exponential growth of the human population and the consequential increase of the required energy on a global scale, the dramatic climate change and the exhaustibility of natural resources combined, force us to strive towards a ... En savoir plus

Evaluation of J-integral in three dimensional bimodular stress field has been carried out for a cracked three point bend specimen having properties of nuclear grade graphite (2020). The additional area integral has an important role in J-integral. The stress dependent elasticity ... En savoir plus

Possible drawbacks of microreactors are inefficient reactant mixing due to the predominance of laminar flow and clogging (when solid-forming reactions are performed or solid catalyst suspensions are used). Ultrasound has been successfully implemented not only to prevent these problems ... En savoir plus

Fischer-Tropsch synthesis (FTS) is a highly exothermic polymerization reaction of syngas (CO+H2) in the presence of Fe/Co/Ru-based catalysts to produce a wide range of paraffins, olefins and oxygenates, often known as syncrude. Multi-Tubular Fixed Bed Reactors (MTFBR) and Slurry Bubble ... En savoir plus

The municipal wastewater treatment in a sustainable context requires a smart technology in which an optimal combination of the ecological status and energy demand can be achieved. The integration of electron conductive materials into a traditionally constructed wetland (CW) has been ... En savoir plus

熔盐堆是唯一一种以液态为燃料的反应堆，熔盐堆研究不同于其他反应堆。本文采用多物理场耦合方法模拟熔盐堆发生工况时熔盐堆中一些参数的变化[1-4]。我们将反应堆模型简化为一个石墨围成的空腔结构，如图[1a]。为简化计算采用二维轴对称图形，如图[1b]。分别采用流体流动接口中单向流中的湍流模式模拟熔盐流体流动、传热模块中流体传热模拟熔盐传热、传热模块中固体传热模拟石墨传热、稀质传递接口模拟反应堆中先驱核浓度、系数型偏微分方程模拟中子扩散。基于以上五个物理场耦合的情况下对一回路发生失流以及石墨发生膨胀两种工况下研究熔盐堆温度变化及先驱核浓度的变化 ... En savoir plus

Silicon carbide (SiC) single crystals are industrially produced by the physical vapor transport technique. Apart from the geometry of the growth setup, there are two main process parameters that can be controlled: temperature and pressure. To support the development of the process, ... En savoir plus

Rotating Magnetic Field Eddy current technique is a promising technique for inspection of flaws in metallic tubular components. Three primary coils, 120 degrees apart in space, are excited with three phase current source, by virtue, a rotating magnetic field polarised ... En savoir plus

Wine quality is strongly dependent on the operation parameters of the production process. In batch or fed batch reactors, the rotating velocity should be carefully controlled to avoid cellular stress and ensure adequate mixing of the mixture. Moreover, precise control of substrates ... En savoir plus

Stirred tanks are widely used in the pharmaceuticals, chemical and paint industries for variety of operations. The fractal impeller is an impeller having a novel design, developed by CSIR-National Chemical Laboratory, Pune, India. The power number of fractal impeller is relatively lower ... En savoir plus