摘要
本文采用浮力修正的k-ε湍流模型,三维离散型边界拟合坐标变换下的控制体积法,进行滨海电厂冷却水工程的潮汐水流和热传输的三维数值模拟研究。以泉州湾水域某核电厂冷却水工程为例,对表排深取的工程布置方案进行了数值计算。计算所得的该水域潮位、流速和流向与原体观测资料吻合良好;所得温排水的温升范围以电厂排水口为中心,沿泉州湾北岸成带状分布;对排水口近区垂向温度分布计算结果与物理模型试验值进行的比较分析表明,排水口附近区域有明显的热水分层现象,但其热水层比试验结果偏小,考虑到物理模型试验也存在着变态效应,总体上认为温度场的计算结果与试验资料趋势一致。
A quasi 3-D numerical model for simulating the flow and heat transport of power plant cooling water discharged into coastal area is established. The buoyancy-modified k-ε turbulence model is applied to close the Reynolds equations. The finite volume approach is adopted to realize the discretization of the model and body-fitted curvilinear coordinate system is used to fit the complicated boundaries. The model is applied to simulate the thermal-hydraulic characteristics of the flow and heat transport of cooling water discharged from a nuclear power plant into the Quanzhou Bay, Fujian Province. The calculated tidal level and flow field are in good agreement with prototype observation data. It is found that the temperature stratification phenomenon takes place at the vicinity of cooling water outlet, but the thickness of the heat water layer is smaller than that obtained from physical model test.
出处
《水利学报》
EI
CSCD
北大核心
2004年第8期66-70,共5页
Journal of Hydraulic Engineering
关键词
数值模拟
冷却水
潮汐水流
κ-ε湍流模型
潮汐水域
numerical simulation
cooling water
tidal flow
heat transport
k-ε turbulence model
coastal area
