The configuration of a plate heat exchanger comprises its number of plates, pass arrangement, location of the inlet and outlet connections and type of channel flow. The effective optimization of the configuration is a complex task since it is not possible to represent the mathematical model of the exchanger explicitly in the configuration elements. To overcome this limitation, the configuration...

Laser Induced Fluorescence (LIF) provides measurements of flow speed, temperature, and density of ions or neutrals in a plasma. Traditionally, a LIF measurement requires two ports on a plasma device; one for laser injection and one for emission collection. Proper alignment of LIF optics is time consuming and sensitive to mechanical vibration. We describe a confocal configuration for LIF that re...

The transient phenomena of incident shock waves during its passage through an orifice, a diverging nozzle, and a conical disk as baffles in a tube are numerically simulated. The influence of geometrical configurations of the baffles on shock attenuation is investigated. The results show that the conical disk was most effective configuration to weaken the strength of transmitted shock waves, sin...

The maximum signal bandwidth on the Australia Telescope Compact Array (ATCA) is to expand from 128MHz to 2GHz. Central to this development is a Field Programmable Gate Array (FPGA)-based digital filterbank correlator featuring high dynamic range and flexible configuration. Associated analog to digital conversion requirements will push the limits of high-speed sampling and quantisation technique...

A diversity antenna combining four inverted-F antennas (IFAs) is evaluated for UHF RF identification (RFID) readers. Polarisation and pattern diversities are obtained for a sequentially rotated configuration of the IFAs. Mutual coupling between ports is minimised by etching quarter-wavelength slots into the ground plane. The resulting envelope correlation coefficient is less than 0.003 in the w...

A computational study was performed to explore the aerodynamic performance of a streamline-traced, externalcompression inlet designed for Mach 1.664 at off-design conditions of freestream Mach number, angle-of-attack, and angle-of-sideslip. Serious degradation of the inlet performance occurred for negative angles-of-attack and angles-of-sideslip greater than 3 degrees. At low subsonic speeds, t...

Abstract This article presents the influence of various ship’s operational conditions occurring during manoeuvres related to entering and leaving ports mooring operations. Frequent starts stops propulsion unit are then required, which affect variability energetic loads power plant, causing accelerated, non-design wear main engine. The effects cold start-ups ship engine subject this study. Condi...

This manuscript discusses special assignments of the phase differences between adjacent output ports per input providing interesting configurations generalized one-dimensional parallel switching matrices out all permutations possible. includes in particular leading to configuration based on two N/2-beam Nolen a matrix with an even number N beams and using only four values shift, 0, 0.5π, π -0.5...

Abstract The performance and life cycle of Li-ion batteries are governed by the maximum temperature uniformity distribution in battery pack, an efficient thermal management system is highly desired to keep operating pack within safe limits. Air cooling has received extensive attention area management. However, intensification air-cooling modules essential while keeping simplicity design satisfy...