滨海核电厂明渠深水温排放三维数值模拟研究
3D numerical simulation of waste thermal discharge by channel into deap coastal area from nuclear power plants
投稿时间:2021-10-15  修订日期:2022-06-26
DOI:
中文关键词:  温排水  明渠排放  三维数学模型  水温分层  输移扩散  深水排放
英文关键词:waste thermal water discharge  3D numerical model  thermal stratification  advection and dispersion  deep water discharge
基金项目:
作者单位邮编
陈小莉 中国水利水电科学研究院 100038
张强 中国水利水电科学研究院 
赵懿珺 中国水利水电科学研究院 
袁珏 中国水利水电科学研究院 
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中文摘要:
      核电厂温排水对海域环境的影响不容忽视,数学模型是预报温排水扩散范围的重要手段。三维数学模型能反映水温垂向分层,相比二维模型更为先进,但应用于温排水模拟的精度需要深入论证。本文针对深水明渠排放型式进行了温排水三维数值模拟,计算结果与物理模型及近区浮射流模型Cormix对比,表明三维数学模型计算的1℃温升范围与物理模型接近,4℃温升范围相较物理模型和Cormix偏小。本项研究表明现有三维数学模型单独应用于明渠水深排放型式难以同时兼顾近远区模拟精度,需要进一步开展与近区浮射流模型的耦合研究以提升其适用性。
英文摘要:
      Waste thermal discharge from nuclear power plant(NPP) is an important environmental problem. Numerical model is a main approach for the thermal dispersion range forcast. The 3D model,with the ability to describe the thermal stratification, shows a clear advantage to the 2D model. However,the precision of the 3D model in the near field requires further verification. In this paper, the thermal discharge from a NPP with deep channel pattern is simultaneously studied by a 3D numerical model, physical model and the near field buoyant jet model Cormix. The results show that the 1℃temperature rise range simulated by the 3D numerical model is close to the physical model, while the 4℃ temperature rise range of the 3D numerical model is smaller than the physical model and Cormix results, especially in the length direction of the hot water belt. Since the 3D numerical model is inadequate in simultaneously simulation the near and far field for the deep channel discharge pattern, further coupling research with the near zone buoyant jet model is needed to improve its applicability.
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