Numerical Investigation of the Effect of Different Radiator Structures on Heat Dissipation Characteristics
In this paper,the influences of fin layout,radiator parameters,and fan arrangement on the heat dissipation characteristics of the radiator are investigated by Flotherm thermal simulation software.It discovers that:①The chip node temperature Tj gradually decreases with the increase of air flow velocity Uc.Compared with the fins arranged along the length of the radiator,the arrangement of the fins along the width of the radiator is more optimal,the radiator has better cooling performance,and the chip node temperature is lower.However,as the air flow velocity increases gradually,this advantage gradually decreases.②When the total height of the substrate and fin is fixed,there exists a set of optimal substrate height and fin height,which makes the heat dissipation performance of the radiator optimal and the chip node temperature minimum.③When the air flow velocity is low,compared with the radiator(without fan),the radiator(with fan)can significantly reduce the chip node temperature.The node temperature drop Tj%decreases with the increase of air Uc.When the air flow velocity increases to a certain extent,the node temperature drop Tj%is negative,the cooling performance of the radiator(with fan)is worse,and the chip node temperature is higher.
radiatorfanheat dissipation characteristictemperature drop
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