摘要
通过由外至内逐步建立控制参数,实现了基于叶型的气冷涡轮叶片参数化设计,在快速更新结构特征,生成实体模型的基础上,创建了复合冷却系统。不同的通流单元以串并联方式模化成为复杂的网络拓扑结构。应用一维流动理论,编写管网程序计算沿流路的流量、换热量、压力损失、温度等参数。内部单元的这些参数作为耦合计算的内边界条件,通过插值传递至外流场计算程序HIT-3D,实现全流域流热耦合分析计算。参考引用文献里的算例,对管网计算程序和耦合算法的有效性进行验证后,在改型设计计算基础上,借助i SIGHT-FD,建立优化平台。通过MIGA寻优机制,达到了提高冷却效率的目标,有效地降低了热负荷。该研究工作对于快速展开冷却结构设计具有一定的指导意义。
Through establishing control parameters from outside to inside, the parametric design of air-cooled turbine blade based on airfoil has been implemented. On the basis of quickly updating structural features and generating solid model, a complex cooling system is created. Different flow-through units are modeled into a complex network topology with series and parallel connection. By applying one-dimensional flow theory, a program is composed to get the pipe network physical quantities along the flow path, including flow rate, heat transfer, pressure loss, temperature and other parameters. These parameters of inside units set as the inner boundary conditions, transmitted to the external flow field calculation program HIT-3D by interpolation to achieve thermal coupling analysis of full flow field. Referring studies in the literature to verify the effectiveness of pipeline network program and coupling algorithm. After that, on the basis of modified design calculation, and with the help of iSIGHT-FD, an optimization platform is established. Through MIGA optimization mechanism, the target of enhancing cooling efficiency is reached, and the heat load has been effectively reduced. Research work has a certain significance for rapid deploying the cooling structure design.
作者
史亮
颜培刚
韩万金
谢鸣
SHI Liang YAN Peigang HAN Wanjin XIE Ming(School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001)
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2016年第18期140-152,共13页
Journal of Mechanical Engineering
基金
国家自然科学基金委创新研究群体资助项目(50421063)
关键词
参数化设计
耦合计算
改型优化
parametric design
coupling computing
modification optimization
