The Influence of DCDC conversion module Fan Vortex on Heat Dissipation(4)

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By comparing the two analysis results, we found that during the analysis of this model, the direction of fan rotation has a particularly large impact on the distribution of the flow field and temperature field inside the DCDC conversion module. In terms of flow field, because the rectifier bridge part of the model is relatively low in size and the PFC radiator part is relatively high, in this case, the rotating direction of the fan has a very significant impact on the flow field. When the fan rotates clockwise, the vortex around the rectifier bridge radiator is small, and the flow field is relatively open, which is conducive to the heat dissipation of the rectifier bridge radiator. However, when the fan rotates counterclockwise, there are many vortices around the rectifier bridge radiator, which is not conducive to the heat dissipation of the rectifier bridge radiator. These differences can also be further proved by the temperature field distribution of the power supply supply section.