【摘要】 针对台山核电厂纳潮取水系统在事故状态时引水隧洞会出现明满流交替现象而对隧洞甚至整个工程带来影响的问题,基于现有明满流交替流动方法的分析,在激波捕捉法(狭缝法)的基础上,将不同长度隧洞的处理方法加入模型,并采用逐渐变化的窄缝来解决计算不稳定问题。将改进的模型应用于台山核电厂纳潮取水系统,得出在10 000年一遇矮胖型外海潮位情况下,工况A(16.79h)为最不利工况,此时海水库达到最低水位-8.05m,较最低允许值-8.80m高0.75m,引水隧洞内未出现不利的压力波现象,表明该核电厂引水隧洞设计满足要求,能够安全运行。更多还原

【Abstract】 Aiming at the problems that the phenomena of free surface pressure may have an important impact on the tunnel,even on the whole project,which occurs when the tide water system is on the state of the accident in tunnel of Taishan nuclear power plant.According to the analysis of current free surface pressure flow method,on the basis of the shock capturing method(slit method),the method of the different tunnel length was added to the model,and the gradual change of narrow gap was adopt to solve the problem of calculating unstable.And then the improved model was applied to the tide water system of Taishan nuclear power plant.It is concluded that in ten thousand by a stout type sea water circumstances,working condition of A(16.79h)is the most unfavorable,and the reservoir reaches the lowest water level to8.05 m which is 0.75 mhigher than the minimum value(8.80m);the diversion tunnel will not appear negative pressure wave phenomenon.Therefore,the design of the diversion tunnel of nuclear power plant meets the requirements and it can work safely.更多还原