针对舰船冷凝器设备的结构和运行特点，根据流体流动守恒方程、道尔顿气体分压定律和牛顿迭代法理论，利用Fortran语言编程，建立多相介质冷凝器热工水力动态仿真模型。基于秦山一期300 MW机组冷凝器额定工况运行参数对开发的模型进行验证。研究表明：所设计的模型可反映冷凝器内部各主要参数随时间的变化规律、真实的流动和换热过程；主要参数相对误差在10%以内，可满足系统实时仿真需求；冷凝器在稳态工况、变负荷过程、故障工况下的仿真分析，可获得其不同工况下的动态响应。

Aiming at the equipment structure and operation characteristics of marine condenser,in accordance with the hydrodynamic conservation equation,Dalton′s law of partial pressure and the theory of Newton iterative method,multiphase medium condenser thermal hydraulic dynamic simulation model was set up by use of Fortran programming. The model was verified based on the rated operating parameters of the 300 MW unit condenser of Qinshan phase Ⅰ. The research results show that the model can reflect the variation rule of each main internal parameter with the time,as well as the real flow and heat transfer process;the relative error of the main parameters is less than 10%,which can meet the realtime simulation requirement of the system.The dynamic response of the condenser under different operating conditions can be obtained by the simulation analysis of the condenser under steadystate operating condition,variable load process and fault operating condition.

TK221