Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"non-uniform heating"”.
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3D Temperature Imaging Using Ultrasonic Backscatter Energy during Non-Uniform Tissue Heating
… temperature monitoring. Ultrasound is a cheap, non-ionizing and convenient method with potential for non-invasive temperature imaging. Previously Straube and Arthur predicted monotonic changes in backscattered energy (CBE) of ultrasound with temperature. Measured CBE values from bovine liver, …
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Field Simulation for the Microwave Heating of Thin Ceramic Fibers
… area of interest is the exploration of improved heating control through experiments and numerical modeling. Controlled heating may be used to counteract non-uniform heating and avoid destructive phenomena such as cracking and thermal runaway. Thermal runaway is a potential problem in materials …
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Intelligent Non-destructive Measurement and Evaluation Techniques for Aircraft Composites
… measurement and diagnostic techniques for the non-destructive evaluation (NDE) of aircraft carbon composites. The outcome of this research work developed reliable and faster techniques to aid in the rapid assessment of defects in anisotropic carbon composites by applying ultrasonic and infrared …
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Flow Boiling in Meso-Scale Pin-Fin Coldplates
… transfer coefficients and improved temperature uniformity. Recent flow boiling studies have focused on fin-enhanced silicon microgaps and microchannels, given their importance in cooling high-power-density chips operating at ultra-high heat fluxes. However, the majority of the research on flow …
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Non-intrusive two-phase flow regime identification and transport characterization in microchannels subject to uniform and non-uniform heat input
… that provide high rates of heat transfer at a uniform heat sink temperature. Under two-phase flow conditions, the heat transfer and pressure drop are a function of the local flow regime. Development of sensors that detect local void fraction and flow regimes may enable better understanding of …
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Fabrication of a nanoporous membrane device for high heat flux evaporative cooling
… and overall device performance arising from non-uniform heating and evaporation of methanol was captured experimentally. Heat fluxes up to 412 W/cm2, over an area of O.4x 5 mm, and with a temperature rise of 24.1 K from the heated substrate to ambient vapor, were obtained. These results are …
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A Fiber-Based Approach for Modeling Beam-Columns under Fire Loading
… al. (1991) to include thermal effects, geometric nonlinearities, and residual stresses. Both fiber elements are implemented in ABAQUS (2007) using the user-defined element (UEL) subroutine. The element formulations are verified by analyses of benchmark experimental tests and comparisons with …
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Development of microreactor setups for microwave organic synthesis
… of this work is the understanding of microwave heating and the microreactor design challenges involved through both chemical experiments and computational models. The original goal of this research is to develop a microreactor system in order to carry the microwave organic synthesis in …
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Effect of Fat Content and Food Type on Heat Transfer during Microwave Heating
… foods are prepared in less time. However, due to non-uniform heating nature of microwave cooking, there exists a serious concern over complete elimination of pathogens in the food. There has been an increase in interest to accurately understand the behavior of different food materials in a …