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Full-Text Articles in Mechanical Engineering
Analytical Study Of Miniature Thermoelectric Device, Mohammed Dhannoon
Analytical Study Of Miniature Thermoelectric Device, Mohammed Dhannoon
Masters Theses
Miniature thermoelectric devices (TE) have been regarded as hopeful devices to attain efficient cooling in microprocessors and other small-scale devices. To recognize the performances of miniature thermoelectric coolers, a thermoelectric cooling module is theoretically analyzed. Particular attention is paid to the impact of the thermoelectric element length effect and the substrate material type influence on the cooling performance. The electrical contact resistance and thermal contact are taken into account.
Furthermore, miniature thermoelectric is compared with large thermoelectric, and effective material properties of miniature thermoelectric are studied. The obtained results also demonstrate power density (cooling/heating power per unit area of the …
Development Of An Analytical Model For Beams With Two Dimples In Opposing Directions, Mofareh H. Ghazwani
Development Of An Analytical Model For Beams With Two Dimples In Opposing Directions, Mofareh H. Ghazwani
Masters Theses
Structures such as beams and steel plates can produce potentially high levels of unwanted vibrations and noises in the environment. A method of improving the vibration and acoustic characteristics of beams based on introducing dimples on its surfaces will be presented in this study. This method focuses on creating two dimples in the same and opposite direction on beam’s surface where the effect of dimples on the change in beam’s natural frequencies is the problems of interest.
A boundary value model (BVM) is developed for a beam with two dimples and subjected to various boundary conditions using Hamilton’s Variational Principle. …