The flow in turbomachinery is inherently unsteady, and the understanding of the flow interaction in the casing endwall region of shrouded turbine stages is a key requirement in achieving further improvements in performances. Thus, comparative numerical investigations of casing endwall flow...

In this paper a perturbation approach to the minimization of hydrogen consumption in polymer electrolyte membrane fuel cell systems is introduced. The control technique is mainly based on the minimization of the current produced by the fuel cell by means of the Perturb and Observe method. The...

Through means of 3-D CFD (Computational Fluid Dynamics) method, a novel axial compressor with different impeller shapes compressing water vapor as refrigerant was investigated. The numerical simulation focuses on the fluid flow from compressor impeller inlet to outlet. The overall performance...

In this paper, the optimization of a weather-predicted free cooling system combined with heat storage is shown. The method of incorporating weather forecasts into the control system is presented. The regime of operation was selected and optimized based on free cooling energy and the required...

Several countries are striving to ensure adequate long-run disposal space for low-level radioactive waste (LLRW). In the United States, the Low-Level Radioactive Waste Policy Act of 1980 and its 1985 amendments comprise a menu of incentives and penalties designed to motivate the construction of...