采用基于无结构三角形网格有限体积法的三维水流运动与温度输运数学模型模拟潮流场与温度场，模型守恒性好，且能实现对工程区域的贴体模拟。通过潮位潮流实测资料对模型进行了验证，数值模拟结果与实测数据吻合较好。对待建电厂温排水的输运与扩散进行了模拟计算，给出了温排水的时空分布及取水口的温升过程线，为电厂取排水口的设计以及温排水环境影响评价提供了科学依据。

In this thesis, numerical flow model and warm water transportation model based on triangular mesh and finite volume method are applied to simulate the tidal current field and temperature field, the model can simulate the project region with a good conservation property. After certifying the model with the measured data, the simulated results are in good agreement with the measured data. Through simulating the transportation and diffusion of the thermal water, the spatial and temporal distributions of the thermal water and the temperature process lines of water intake are given. They can provide scientific basis for the design of water intake and outlet, and environmental impact assessment invoked by the warm water.