摘要
针对能源工业领域中常见的压力容器-管路-安全阀系统(以下简称:压力系统)开展了系统级变保真度模型的研究。从提高模型的仿真效率同时保证计算精度的角度出发,分别基于等效压力点方法、特征线理论和CFD技术对压力系统中的压力容器、连接管路和安全阀进行了元件级模型的构建和系统级模型的耦合。为了验证提出的建模方法的准确性,结合已有的实验结果进行了模型的精度验证,结果表明,构建的系统级变保真度模型具有较好的压力系统动态特性仿真能力,能够对压力容器和管路内的压力波动以及弹簧式安全阀的动态响应进行准确的计算。
A research on the system-level and multi-fidelity model of a pressure vessel-pipe-safety valve system(referred to as‘pressure system’)which is common seen in the energy industry field is carried out.From the perspective of improving the efficiency and ensuring the accuracy of the model,system-level as well as component-level models of the pressure vessel,connecting pipe and safety valve of the pressure system are constructed based on the methods of equivalent pressure point,the Method of Characteristics(MOC),and the Computational Fluid Dynamics(CFD)approach.For the model verification purpose,the simulation results of the developed model were compared with that obtained from experiments.The results show that the system-level variable fidelity model has a good ability in dynamics prediction of the pressure system and can accurately calculate pressure surges in the pressure vessel and pipe as well as the dynamic response of the spring-loaded safety valve.
作者
宗超勇
李清野
周威豪
宋学官
颜少华
ZONG Chao-yong;LI Qing-ye;ZHOU Wei-hao;SONG Xue-guan;YAN Shao-hua(School of Mechanical Engineering,Dalian University of Technology,Dalian,Liaoning 116000;CGN Huizhou Nuclear Power Co.,Ltd.,Huizhou,Guangdong 516000)
出处
《液压与气动》
北大核心
2022年第8期80-86,共7页
Chinese Hydraulics & Pneumatics
基金
国家自然科学基金(52075068)。
关键词
压力容器-管路-安全阀系统
变保真度模型
特征线法
CFD
pressure vessel-pipe-safety valve system
variable-fidelity modeling
method of characteristics
CFD
