Technical Papers and Presentations

The machining of hardened steel or powder metallurgical steel, for example to manufacture impact extrusion punches, is a big challenge for conventional machining technology as milling or turning. A non-conventional machining technology is Electrochemical Machining (ECM), which allows ... Read More

Chemicals are an integrated part of our daily life. While chemicals are significant contributor to a nation’s economy, sound management of chemical production is essential for environmentally friendly operation without maximizing operational costs. Next generation technologies must be ... Read More

Since the industrial demand in the energetic, mining and oil & gas sectors has increased exponentially these last decades, security standards and fire protection methods are extremely important not only for the employees, but also for the infrastructure involved in production areas ... Read More

The Finite Element Model is analyzed with impounded water considering appropriate boundary conditions between the water & the upstream face of the dam .The fluid on the upstream side is considered to be incompressible, inviscous, and irrotational. Here the effect of fluid ... Read More

In order to improve hydrogen production in an ethanol reformer it is needed to understand what happens inside it. Also, a simulated model can simulate different work conditions avoiding the necessity of doing tons of experiments. A 3D computational fluid dynamics simulation study of ... Read More

Airbus Safran Launchers is the market leader in Space Launch services. Rocket engines are among the most powerful machines that exist. The core of the rocket engine is the combustion chamber where in the case of liquid propellant rocket engines, fuel and oxidizer are injected, mixed and ... Read More

近年来，一些研究人员基于金属波导的结构色散实现了各向同性的波导超材料，并研究了其各种各样的应用。然而，各向异性的波导超材料却没有得到深入的研究。我们利用金属平板/矩形波导在TEm模式下的结构色散，并在波导内部周期性交替填充两种不同的电介质A和B，并辅以细金属线连接上下金属板，从而可以将整个波导系统等效成二维TM偏振下的各向异性有效介质。我们发现在金属波导内沿着A-B多层介质的两个光轴方向存在两个不同的截止频率。当工作频率处在这两个截止频率范围内时，整个波导系统等效后的有效介质等频率曲线呈现出双曲函数的形式，即实现了双曲型波导超材料；当工作频率在较高的截止频率附近时 ... Read More

This work is a first evaluation of the validity of the frozen rotor approximation for the simulation of a stirred beaker. The agreement is good, further analysis will be carried before using the model to optimize labscale setup dedicated to IL electrochemistry. Read More

The vestibular systems are very important to balance of body. But some people have vertigo and dizziness caused by vestibular disorder. It is well known how the symptom appears physiologically. The benign paroxysmal positional vertigo (BPPV) which comes from moving an otolith in ... Read More

The JPM Silicon GmbH presents a novel method for the production of solar grade silicon in the microwave oven. This method can specially reduce the energy costs and increase the efficiency of the process. A numerical model is developed which depicts the physical, chemical and ... Read More