航空发动机
航空髮動機
항공발동궤
AERO ENGINE
2012年
1期
37-40
,共4页
韩乐%常海萍%丁阳%孙启超%徐磊
韓樂%常海萍%丁暘%孫啟超%徐磊
한악%상해평%정양%손계초%서뢰
层板%填充比%换热特性%冷却效率%数值模拟%试验验证
層闆%填充比%換熱特性%冷卻效率%數值模擬%試驗驗證
층판%전충비%환열특성%냉각효솔%수치모의%시험험증
laminated structure%filling ratio%heat transfer characteristic%cooling efficiency%numerical simulation%experimental verification
针对3种层板冷却结构,通过改变填充比得到了其冷却效率。数值模拟和计算分析发现,随着填充比的增大,绕流柱面及靶面的对流换热能力变化很大,进气板面及进出气孔壁的对流换热能力变化较小,层板结构的冷却效率单调增大。试验结果表明:在层板设计中,应适当增大填充比来获得较优的换热特性。
針對3種層闆冷卻結構,通過改變填充比得到瞭其冷卻效率。數值模擬和計算分析髮現,隨著填充比的增大,繞流柱麵及靶麵的對流換熱能力變化很大,進氣闆麵及進齣氣孔壁的對流換熱能力變化較小,層闆結構的冷卻效率單調增大。試驗結果錶明:在層闆設計中,應適噹增大填充比來穫得較優的換熱特性。
침대3충층판냉각결구,통과개변전충비득도료기냉각효솔。수치모의화계산분석발현,수착전충비적증대,요류주면급파면적대류환열능력변화흔대,진기판면급진출기공벽적대류환열능력변화교소,층판결구적냉각효솔단조증대。시험결과표명:재층판설계중,응괄당증대전충비래획득교우적환열특성。
Aiming at three kinds of laminated structure, the cooling efficiency was obtained by changing the filling ratio. The numerical simulation and calculation analysis show that as the filling ratio increased, the convective heat transfer capacity of the flow varied greatly around a cylinder and the target surface, varied slightly around the plate surface and inlet and outlet holes wall, and the cooling efficiency of the laminated structure increased monotonically. The experimental results show that filling ratio should be appropriately increased to get better heat transfer characteristics in the laminated structure design.