快堆蒸汽发生器小泄漏钠水反应产物传输扩散三维数值模拟  

Three Dimensional Numerical Simulation of Transport and Diffusion of Sodium water Reaction Products on Small Water/Steam Leak in Steam Generator of Fast Reactor

作　　者：段日强[1] 王洲[1] 杨献勇[1] 罗锐[1] 穆瑞云[1] 

机构地区：[1]清华大学热能工程系,北京100084

出　　处：《核动力工程》2001年第3期207-210,215,共5页Nuclear Power Engineering

摘　　要：为了研究快堆蒸汽发生器热力参数对其水 /水蒸汽泄漏探测系统响应的影响，本文建立了钠水反应产物在蒸汽发生器内的传输扩散模型。该模型根据钠水反应机理，首次提出氢气线密度概念，建立了氢气线密度控制微分方程，以及氢氧根离子传输扩散方程；最后建立了氢离子的三维传输扩散方程。通过泄漏探测系统——氢计对模型计算的蒸汽发生器钠出口氢浓度的响应与实际注水实验氢计的响应比较，结果表明，该模型可以较准确地预测蒸汽发生器水 /水蒸汽泄漏后钠水反应产物的传输扩散过程。In order to study the effect of thermodynamic parameters of steam generator in fast reactor on the leak response of a small leak detection system, the paper sets up the model of sodium-water products transport and diffusion in the steam generator. For the first time, a hydrogen line density concept is proposed, and the controlling differential equations of the hydrogen line density and hydroxide ion are established. The three-dimensional transport and diffusion equation is established. By comparison between the computed results and measurement of the hydrogen detector response on H- concentration in the sodium exit of steam generator, it shows that the model can exactly predict the transport and diffusion process of sodium-water reaction products on small water/steam leak in steam generator of fast reactor.

关 键 词：蒸汽发生器 泄漏 传输扩散 数值模拟 快堆 钠水反应产物 含氢产物 泄漏探测系统 安全设计 

分 类 号：TL433[核科学技术—核技术及应用] TL353.13