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本文对含有金属腐蚀物杂质的亚临界与超临界压力水在竖直加热圆管内的受迫对流与混合对流传热与传质进行了数值模拟,分析了变物性、浮升力以及压力等因素对管内对流传热与传质的影响。结果表明:浮升力使自下而上流过竖直加热圆管的对流传热和传质增强;在不同的温度条件下,超临界压力水的热物性对传热传质的影响有很大不同。
In this paper, the forced convection and mixed convective heat transfer and mass transfer of subcritical and supercritical pressure water with vertical corrosion in a circular tube were numerically simulated. The factors such as the change of physical properties, the buoyancy and the pressure were analyzed. Effect of Convective Heat Transfer and Mass Transfer in Tube. The results show that the buoyancy force enhances the convective heat transfer and mass transfer through the vertically heated pipe from bottom to top. Under different temperature conditions, the thermal properties of supercritical pressure water have very different effects on heat and mass transfer .