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Full-Text Articles in Mechanical Engineering

Heat Transfer Analysis Of Slot Jet Impingement Onto Roughened Surfaces, Rashid Ali Alshatti Nov 2015

Heat Transfer Analysis Of Slot Jet Impingement Onto Roughened Surfaces, Rashid Ali Alshatti

Graduate Theses and Dissertations

The effect of surface roughness on jet impingement heat transfer was investigated in this research. A numerical analysis was conducted for free surface slot jet impinging normally onto a heated plate. Six different geometries and three different plate materials were investigated. The cooling fluid used for the analysis was water, and the flow was laminar with a range of Reynolds number (Re) from 500 to 1000. Temperature distribution, local and average heat transfer coefficient, and local and average Nusselt number were presented for each case.

The steady state heat transfer results show that the increase in Reynolds number (Re) increases ...


Continuous Electrowetting In Passivating And Non-Passivating Systems, Mehdi Khodayari Jan 2013

Continuous Electrowetting In Passivating And Non-Passivating Systems, Mehdi Khodayari

Graduate Theses and Dissertations

Electrowetting is an electromechanical response that can be used to change the equilibrium

shape of droplets on a surface through the application of an electric potential. By applying this potential asymmetrically to a droplet, the droplet can be moved. Typical electrowetting devices use an electrode covered by a dielectric to reduce electrochemical interactions. Successful electrowetting requires electrodes and dielectric layers that can resist damage through many cycles of voltage.

Continuous Electrowetting (CEW) is performed on high resistivity silicon wafers. In this process, when an electric potential difference is applied between the substrate ends, the droplet on the substrate moves towards ...