航空工程进展2024，Vol.15Issue(4)：27-38,12.DOI:10.16615/j.cnki.1674-8190.2024.04.04
吸气预冷发动机预冷换热芯体仿生结构设计发展趋势与展望
Development trends and prospects of biomimetic structure design for precooled heat exchange cores of aspirated precooled engines
摘要
Abstract
The air precoolers of existing pre-cooled combined cycle engines for hypersonic aircraft are generally composed of multiple sets of micro tube bundles,and there are problems such as high flow induced vibration and high processing requirements during the working process.Therefore,it is necessary to redesign the heat exchange core of the precooler and conduct further flow heat transfer research on it.The modification demand of precooler heat exchange core based on biomimetic fractals is analyzed,and its applications of honeycomb-like fractals,tree-like fractals,and mixed structures on biological surfaces are sorted out,so as to the biomimetic concave-convex surface structures and hydrophobic structures applied to reduce surface flow resistance and suppress frosting.Three design examples of"cylindrical"biomimetic precooling heat exchange cores are given,which can be applied to the aerospace field.The development prospects of combining biomimetic microchannel heat exchange structures with precooler heat exchange core design are looked forward.关键词
预冷器/换热结构/仿生分形/强化传热/流动减阻Key words
precooler/heat exchange structure/biomimetic fractal/enhanced heat transfer/flow resistance reduction分类
航空航天引用本文复制引用
王晓放,董永林,蒋顺林,张志刚,鲁业明..吸气预冷发动机预冷换热芯体仿生结构设计发展趋势与展望[J].航空工程进展,2024,15(4):27-38,12.基金项目
JW基础加强项目(2021-JCJQ-JJ-0227) （2021-JCJQ-JJ-0227）
中国航天基金会空天动力公益专项基金项目(KDJJ20230102001) （KDJJ20230102001）
辽宁省应用基础研究计划(2023JH2/101600031) （2023JH2/101600031）
国家自然科学基金(52005073) （52005073）
