物理学报2012，Vol.61Issue(12)：379-386,8.
翼前缘层板对流冷却结构的防热效果分析
Research on convective cooling effect of leading edge platelet of airfoi1
摘要
Abstract
A convective cooling platelet structure is a considered as a thermal protection system to prevent the leading edge of airfoil from the serious aerodynamic heating. The cooling effect parameter ηis proposed in this paper. By use of fluid structure interaction method, the cooling effect of convective cooling structure is investigated under given condition. The minimum r/that is 0.25 when the coolant is water occurs on the leading edge of airfoil head. The research shows that the increases with the increasing of channel aspect radio （7） and reaches a stable value which indicates the cooling effect is saturated. Situation unfavorable for cooling may occur if the 7 keeps increasing. And the decreases with the radio of airfoil＇s head decreasing. With coolant flux increasing, the also increases to a stable value and the pressure drop between inlet and outlet increases rapidly when the structure and the material of the convective cooling platelet structure are fixed. Considering the pressure brought to the supply system due to the increase of flux, we should choose the optimal coolant flux value in order to obtain better cooling effect. Both the inner coolant groove and the external refractory protection should use high conductivity materials which can strengthen the heat transfer of structure and enhance the cooling effect.关键词
对流冷却/翼前缘/气动加热/流固耦合Key words
convective cooled/leading edge of airfoil/aerodynamic heating/fluid structure interaction分类
数理科学引用本文复制引用
孙健,刘伟强..翼前缘层板对流冷却结构的防热效果分析[J].物理学报,2012,61(12):379-386,8.基金项目
国家自然科学基金（批准号：90916018）和高等学校博士学科点专项科研基金（批准号：200899980006）资助的课题. （）
