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 mode"”.
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Development and validation of a thermodynamic model for predicting mode transitions in falling film flows over horizontal tubes
… of the tubes. In the inter-tube space, the flow can take three main modes, namely: droplet, jet, and sheet modes. The accurate prediction of the prevailing flow mode is very important for the design and operation of these heat and mass exchangers, because the main performance characteristics …
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Experimental Study of Capillary-Assisted Solution Wetting And Heat Transfer Using A Micro-Scale, Porous-Layer Coating On Horizontal-Tube, Falling-Film Heat Exchanger
… to capillary action, even at very low solution flow rates. It was shown from the comparison of the evaporation heat transfer results of the plain and porous-layer coated tubes tested in a closed chamber under saturated conditions that the porous-layer coated tubes exhibited a superior …
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Observation and measurements of flow structures in the stagnation region of a wing-body junction
… formed around an obstacle in a boundary layer flow was studied experimentally in a water tunnel for two low speed cases. A wing consisting of a 3 : 2 elliptical nose and an NACA 0020 tail was used to simulate the junction vortex. A visual study using a hydrogen bubble technique was extensively …
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A geohydrological study of the Richards Bay area
Numerical methods such as groundwater models can play a vital rplein understanding the dynamics of an aquifer provided that the input data is accurate and sufficient to represent the environmental system adequately. The groundwater flow mode! used in this project requires specific information about …
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Redox Reactions Influencing Lead Concentrations in Drinking Water: Formation and Dissolution of Lead(IV) Oxide and Impact of Galvanic Corrosion
… Experiments were performed in a recirculating flow mode with intermittent stagnation periods. Relative to the plastic-coupled pipe assemblies, which always had the lowest lead release, the lead release increased in the order of the systems coupled with plastic with external wires, brass …
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A combined modeling and experimental study assessing the impact of fluid pulsation and operating schemes on charge and energy efficiency in capacitive deionization
… density increases. To overcome this we use pulse-flow operation to control fresh- and brine-water concentrations. The charge and energy efficiency performance between the two flow-modes is compared using a porous electrode model that is calibrated and validated with experimental data. To quantify …