浮动式核电站温排水热扩散模拟研究  

The Numerical Simulationon Hot Drainage Thermal Diffusion of the Floating Nuclear Power Plants

作　　者：田力荣 方园 杨继飞 孙海军[1] 高山 乔磊 TIAN Li-rong;FANG Yuan;YANG Ji-fei;SUN Hai-jun;GAO Shan;QIAO Lei(Wuhan Second Ship Design and Research Institute,Wuhan 430064,China)

机构地区：[1]武汉第二船舶设计研究所

出　　处：《汽轮机技术》2019年第4期271-274,共4页Turbine Technology

摘　　要：采用标准k-ε湍流模型对浮动式核电站在3种洋流速度(0m/s、0.06m/s、0.2m/s)和两种循环冷却水取、排水口布置方式下(底进侧排、底进底排),温排水对循环冷却水取水口以及周围海域温度的影响进行三维数值模拟研究。研究结果表明:在底进侧排的布置方式下,温排水热扩散对取水口温升不造成影响,对作业海域造成的海水温度升高范围也在国家标准规定的范围之内;洋流速度的存在,使温排水沿洋流方向扩散增强,且洋流速度越大,扩散范围越广。有洋流条件下,底进底排的布置方式会造成取水口附近海水温度升高,且洋流速度越大,温升越大。研究结果对浮动式核电站系统设计以及主汽轮机组相关设计参数提供设计依据。Relying on the demonstration project,we use the standard k-εturbulence model to simulate the effect of hot drainage on the temperature of the circul-ating cooling water intake and the surrounding sea area in a 3D model under such conditions that three current speed(0m/s,0.06m/s,0.2m/s)and two arrangement forms of the circulating cooling water intake and outlet(bottom-in and side-out,bottom-in and bottom-out).The results indicate that under the arrangement of the bottom-in and side-out,thermal diffusion of the warm drainage has no influence on the temperature rise of water inlet,the range of sea water temperature rise in the operating sea area is also within the range stipulated by national standards.The existence of the ocean current velocity enhances the diffusion of the temperature drainage along the direction of the ocean current.Under the condition of ocean currents,the arrangement of the bottom-in and bottom-out will cause the increase of sea water temperature near the intake,and the greater the ocean current velocity,the greater the temperature rise.The results of this paper provide the design basis for the design of the floating nuclear power plant system and the related design parameters of the main steam turbine unit.

关 键 词：浮动式核电站 温排水 洋流速度 数值模拟 

分 类 号：TM623.8[电气工程—电力系统及自动化]