This study summarizes experimental investigations of the flow field characteristics in cross-flow planes a 5×5 rod bundle with spacer grid and split-type mixing vanes. Under isothermal atmospheric conditions, velocity fields are obtained by applying matched-index-of-refraction time-resolved particle image velocimetry (TR-PIV) techniques for Reynolds numbers Re1=14,000 Re2=28,000. The axially st...

This paper explores subband processing of complex (I/Q) signals which finds various important applications especially in communications signal processing. Instead of using traditional DFT based systems, the filter bank based systems are very interesting choices when high selectivity in the subchannels is required. We present a novel efficient complex modulated critically sampled filter bank str...

In this paper, Optimum adaptive loading algorithms are applied to Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (MIMOOFDM) system. Chaw’s and Compello’s algorithms have been implemented to obtain a bit and power allocation for each subcarrier assuming instantaneous channel knowledge. Channel matrix singular value decomposition (SVD) method has been employed in MIMO-O...

The thermoelectric refrigeration system is an application of the Peltier effect, and good performance dependent on effective heat dissipation performance. To enhance cooling system, this paper designs a new type finned sink, which does not change overall size system. under fin tested by experiments various conditions. During experiment, wind speed, temperature hot cold side TEC, power consumpti...

The flow channel of the fluids in the nuclear reactor core and the heat exchanger is relatively small. In order to understand the two-phase flow phenomena in the narrow channel, many interesting studies have been carried out, for example, mini capillaries (Wong, et al., 1995, Han & Shikazono, 2009), rectangular channels with small gap (Mishima, et al., 1993, Xu, et al., 1999, Hibiki & Mishima, ...