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采用SIMPLE算法和k-ε模型,对某凝汽器喉部建立数值模型。通过计算机的数值模拟,从减小凝汽器喉部气阻和保证凝汽器喉部流动的稳定性和均匀性出发,对低压加热器在喉部的不同布置形式、不同布置位置进行数值研究。综合分析了低压加热器不同布置对流动阻力及喉部出口流场均匀性的影响,了解喉部的流动机理,为凝汽器喉部的改造、设计和安全运行提供了理论基础。
Using the SIMPLE algorithm and the k-ε model, a numerical model of the condenser throat was established. Based on the numerical simulation of the computer, the numerical research on the different arrangement of the low-pressure heater in the throat and the different layout positions are carried out with the aim of reducing the air resistance in the condenser throat and ensuring the condenser’s throat flow stability and uniformity . The influence of different arrangement of low pressure heater on the flow resistance and the uniformity of the flow field at the throat outlet is analyzed comprehensively. Understanding the flow mechanism of the throat can provide a theoretical basis for the reconstruction, design and safe operation of the condenser throat.