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The Effect of Base Temperature Variation on The Unsteady State Annular Heat Sink
Ali Meer Ali Jasim Babylon University / College of Engineering Mechanical Engineering Department Rehab Noor Mohammed Babylon University / College of Engineering Mechanical Engineering Department
ABSTRACT
The effect of base temperature variation on the heat transfer from unsteady state annular heat sink of cooling microelectronic device. Three types of the base temperature variation equations are taken in the present study. The Sine wave variation, Cosine wave variation & exponential variation of the base temperature. The finite element technique based on Galerkin method with axisymmetric rectangular elements is used in the present analysis. The base temperature variation effects on the effectiveness & the efficiency of the heat sink are studied during the present research. We were taken the base temperature is depends on the time & the height of the heat sink. A Quick Basic computer program were performed on a high performance PC & some typical results are plotted in graphical forms. These plots give the effectiveness & efficiency of annular heat sink as a function of the dimensionless time (Fourier no.) with different forms of base temperature. The exponential equation for the base temperature along for heat sink height will produce high temperature peak value compared with the others (Sine and Cosine), while Cosine wave produce high amplitude than Sine wave for the heat sink height.
- وصف الــ Tags لهذا الموضوع
- Base Temperature,Unsteady State,Annular Heat Sink
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