哈尔滨工程大学学报2025，Vol.46Issue(4)：675-682,709,9.DOI:10.11990/jheu.202310035
高温气冷堆板翅式回热器一维可压缩流动算法
One-dimensional compressible flow model for a plate-fin recuperator in a high-temperature gas-cooled reactor
白一帆 1丁铭1
作者信息
- 1. 哈尔滨工程大学 黑龙江省核动力装置性能与设备重点实验室,黑龙江 哈尔滨 150001
- 折叠
摘要
Abstract
In order to calculate the dynamic response processes of the plate-fin recuperator in a high-temperature gas-cooled reactor with a direct helium turbine cycle,this study established a one-dimensional compressible flow model of the plate-fin recuperator.The governing equations of the model were discretized using the hybrid semi-im-plicit method,and the decoupling and semicoupling methods were proposed to solve the temperature equations that couple the fluid domain and the heat transfer surface.Analyzing the calculated example of the recuperator's step-up inlet temperature using the aforementioned two methods and simulating the transient process under temperature,flow rate,pressure,and temperature-flow compound step disturbances show that the decoupling method offers a fas-ter solving speed than the semicoupling method.It is more suitable for the overall calculation of the plate-fin recu-perator in a direct helium turbine cycle system.The results show that this method can not only simulate the temper-ature response process of the plate-fin recuperator under simple disturbances but also be used to capture the pres-sure and flow rate responses that the incompressible model cannot calculate.Thus,this method can be effectively applied to the dynamic performance analysis of the plate-fin recuperator within the system.关键词
高温气冷堆/直接循环/板翅式回热器/动态响应/一维可压缩流动模型/混合半隐式算法/数值计算/计算流体力学Key words
high-temperature gas-cooled reactor/direct cycle/plate-fin recuperator/dynamic response/one-dimen-sional compressible flow model/hybrid semi-implicit method/numerical computation/computational fluid dynamics分类
核科学引用本文复制引用
白一帆,丁铭..高温气冷堆板翅式回热器一维可压缩流动算法[J].哈尔滨工程大学学报,2025,46(4):675-682,709,9.
