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Experimental Investigation of Heat Transfer and Pressure Drop of Pipes with Internal Roughness
DownloadFall 2022
In many industrial heat exchangers, it is desirable to improve the rate of heat transfer from a pipe wall to the fluid flow. This improvement is commonly made by adding some form of roughness to the pipe surface. However, the added roughness often leads to an increase in the pressure drop of the...
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Understanding the Role of Surface Microgeometries on Wetting: Designing Robust Superhydrophobic Surfaces
DownloadSpring 2014
This thesis is concerned with effects of surface microgeometries on wetting, aiming at providing instructions for reproducing controllable wettability on artificial surfaces and designing robust superhydrophobic surfaces. First, the origin of edge effect is understood by a thermodynamic approach...
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Spring 2013
This thesis is concerned with the effect of mechanical wear on superhydrophobic surfaces (SHS). This work, for the first time, systematically details the simultaneous surface topography and wetting behavior changes upon abrasion of SHS. The process of physical abrasion was also simulated on the...