典型层板结构内部换热特性研究
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- 英文论文题名：Investigation on Internal Heat Transfer Characteristics of Typical Lamilloy
- 论文作者：宋伟
- 英文论文作者：Song Wei ; AVIC Shenyang Engine Design and Research Institute
- 年：2016
- 作者机构：中航工业沈阳发动机设计研究所;
- 论文关键词：层板结构 ; 冲击强化换热 ; 气膜孔分布 ; 换热特性 ; 数值计算
- 英文论文关键词：lamilloy ; impingement heat transfer enhancement ; film hole arrangement ; heat transfer characteristics ; numerical simulation
- 会议召开时间：2016-10-31
- 会议录名称：探索 创新 交流（第7集）——第七届中国航空学会青年科技论坛文集（上册）
- 英文会议录名称：Discovery,Innovation and Communication——Proceedings of 7th CSAA Science and Technology Youth Forum
- 语种：中文
- 分类号：TK124
- 学会代码：ZGHU
- 会议名称：探索 创新 交流（第7集）——第七届中国航空学会青年科技论坛
- 会议地点：中国广东中山
- 主办单位：中国航空学会
- 学会名称：中国航空学会
- 页数：5
- 文件大小：2009k
- 原文格式：O
- 会议级别：全国
摘要
通过数值计算分析了5种多孔层板单元结构,低压比时考察各层板模型冲击面换热性能,高压比时进一步关注进气面的换热特性。研究层板腔内部换热表面的换热特性影响因素。研究结果表明:冲击面高换热系数分布的决定性因素为冲击强化换热;冲击流动高换热区域同样主导了进气面的高换热系数区域位置;较高冷气压比时,气膜孔相对冲击孔扰流柱的位置变化会影响冲击面换热系数;低压比时,异型气膜孔对冲击面的换热强化作用比气膜孔开孔密度影响大,高压比时,气膜孔开孔密度对其换热特性影响比重大。
Numerical simulation of fluid and solid zones is carried out with CFX software to obtain heat transfer of five different lamilloy configurations.The influence factors on the internal heat transfer and different heat exchange areas under the varied pressure ratio are reviewed.It reveals that strengthen-impingement is the determinate factor of heat transfer distribution at impingement side,which also affects inlet side at the same time.The arrays of film hole to rib affect impingement side heat transfer at high pressure ratio.The lamilloy with dust-pan shaped hole can improve heat transfer especially at low pressure ratio,but at the high pressure ratio,the more important role is the film hole density.
Numerical simulation of fluid and solid zones is carried out with CFX software to obtain heat transfer of five different lamilloy configurations.The influence factors on the internal heat transfer and different heat exchange areas under the varied pressure ratio are reviewed.It reveals that strengthen-impingement is the determinate factor of heat transfer distribution at impingement side,which also affects inlet side at the same time.The arrays of film hole to rib affect impingement side heat transfer at high pressure ratio.The lamilloy with dust-pan shaped hole can improve heat transfer especially at low pressure ratio,but at the high pressure ratio,the more important role is the film hole density.
引文
[1]Nearly D A,Relder S B.Evaluation of Laminated Porous Wall Material for Combustor Liner Cooling.Transactions of the ASME,Journal of Engineering for Power,1980,102:268-276.
[2]Wear J D,Trout A M,Smith J M,et al.Design and Preliminary Results of a Semi-Transpiration Cooled(Lamilloy)Liner for a High-Pressure,High-Temperature combustor.AIAA,1978:78-997.
[3]Rolls-Royce Aerospace Group.喷气发动机(第四版).北京:罗尔斯-罗伊斯公司技术出版物部,1986.
[4]Mongia H C,Reider S B.Allison Combustion Re-Search and Development Activities.AIAA-85-1402,1985.
[5]吴海铃.多孔多层板发散冷却特性:(一)直通道[J].航空发动机,2004.30(1):19-22.
[6]吴海铃.多孔多层板发散冷却特性:(二)横流作用[J].航空发动机,2004,30(2):31-34.
[7]郁新华.层板结构内部换热特性的研究[J].航空学报,2003,24(5):405-410.
[8]何家德.用瞬态测试技术研究多孔层板的换热特性[J].燃气涡轮试验与研究,1999,12(1):21-24.
[2]Wear J D,Trout A M,Smith J M,et al.Design and Preliminary Results of a Semi-Transpiration Cooled(Lamilloy)Liner for a High-Pressure,High-Temperature combustor.AIAA,1978:78-997.
[3]Rolls-Royce Aerospace Group.喷气发动机(第四版).北京:罗尔斯-罗伊斯公司技术出版物部,1986.
[4]Mongia H C,Reider S B.Allison Combustion Re-Search and Development Activities.AIAA-85-1402,1985.
[5]吴海铃.多孔多层板发散冷却特性:(一)直通道[J].航空发动机,2004.30(1):19-22.
[6]吴海铃.多孔多层板发散冷却特性:(二)横流作用[J].航空发动机,2004,30(2):31-34.
[7]郁新华.层板结构内部换热特性的研究[J].航空学报,2003,24(5):405-410.
[8]何家德.用瞬态测试技术研究多孔层板的换热特性[J].燃气涡轮试验与研究,1999,12(1):21-24.