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 6 of 6 for “"flow pattern map"”.
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Flow pattern mapping of horizontal evaporating refrigerant flow based on capacitive void fraction measurements
… these devices, the prediction of two-phase flow heat transfer of evaporating refrigerants has to be improved. This heat transfer is strongly related to the two-phase flow patterns. Improving the current two-phase flow models should therfore focus on incorporating more flow phenomena into the …
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Evaporation of pure fluids and mixtures in a microchannel tube
Two-phase flow in microchannel tube is taking huge interest by both the academic and engineering worlds. It is necessary to understand the flow when the diameter is at the scale of one millimeter. The decreasing in diameter enhances the heat transfer, but also increases pressure drop. The two-phase …
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The prediction of flow patterns, liquid holdup and pressure losses occurring during continuous two-phase flow in horizontal pipelines
Two 1700-foot field test flowlines, one a two inch I.D. line and the other a four inch I.D. line, were constructed and leveled for the purpose of studying continuous, two-phase, horizontal flow. Each flowline was equipped with two pairs of "quick closing" valves by means of which the liquid holdup …
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A study of two-phase flow in a large diameter horizontal pipeline and the measurement of interfacial level gradient in smooth stratified flow conditions
… study investigates the behaviour of two-phase flow in large diameter horizontal pipelines. The study was divided into two main parts: (i) General two-phase flow in 203 mm diameter pipeline, where the pressure drop and void fraction were measured. The pressure drop was measured using 23 bottom …
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Effect of micro-fin geometry on flow and heat transfer during evaporation in round tubes
… a novel approach to visualize the two-phase flow pattern in transparent micro-finned tubes under both adiabatic and diabatic conditions. Rather than the conventional sight-glass method (without internal micro-fin geometry in the clear tube), clear resin tubes are made by a 3D printer to …
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Studium proudění nemísitelných kapalin
… pozorované režimy toku byly zaznamenány do mapy toku, která je funkcí vstupních rychlostí obou kapalin. Pro další analýzu byl vytvořen i druhý typ mapy toku, která zobrazuje režimy jako funkci rychlosti směsi a objemového podílu fáze. Vybraný režim byl také simulován pomocí softwaru ANSYS …