In Working Group 3 of Sub-committee 62C of the international electrotechnical commission (IEC) a new project is underway [1] with the objective of specifying requirements for the performance characteristics of instruments for the non-invasive measurement of the X-ray tube voltage in diagnostic radiology. In this draft the X-ray tube voltage is spec...
Der Nachweis des Schadstoffes NO_2 in der Aussenluft erfordert Sensoren, die Konzentrationen bis in den untersten ppb Bereich nachweisen koennen. Fuer diese Aufgabe werden ueblicherweise teure Systeme eingesetzt, die auf dem Prinzip der Chemilumineszenz beruhen. In dieser Arbeit wird ein kostenguenstiger Oberflaechenwellensensor vorgestellt, bei de...
At the present the OWC-tidal power plant is the most forward-looking way of converting tidal energy into usable electric power. Current research works focus on the dimensions of the structures in terms of occurring loads, the minimisation of hydraulic losses and the development of new turbine-generator types. The development of all air-turbine syst...
Germany
Germany
Germany
Germany
In this report, we will first briefly describe the phenomena, underlying mechanisms and necessary criteria of DDT, then summarize the experimental work on hydrogen explosion performed at the SWL of RWTH Aachen. Then we will explain the CFD codes SHOCKIN and AIXCO as well as the applications in the simulation of DDT processes. Studies performed at t...
Germany
In the following chapter, an overview and references on the physics and geometry of helical advanced stellarators is given. On the basis of this configuration, the influence of magnetic field geometry is then discussed in a basic model of drift-Alfven wave turbulence which contains the necessary physics that applies to the plasma edge. By means of ...
