平面二维温排水数学模型中的热上浮效应

Thermal buoyancy effect in two-dimensional cooling water mathematical models

当水深较大时,温排水热上浮效应明显,温排水的热量仅在水体表层的一定深度内扩散.采用平面二维数学模型计算了温排水扩散深度为全水深和掺混层两种情况.在对计算结果比较后认为,当水深较大时,采用掺混层的厚度控制温排水扩散更为合理.

The thermal buoyancy effect of the cooling water is clear in deeper water areas because the heat quantity of the cooling water is diffused at certain depth below water surface. The diffusion effects of two types of diffusion depth of cooling water, such as the whole water depth and the mixing zone, are calculated by using a twodimensional mathematical model. Comparison of the calculation results shows that it is more rational using the mixing zone depth to control the cooling water diffusion for deeper water.