燃烧室壁冲击-逆向对流-气膜冷却特性的数值研究

Numerical simulation for impingement-counterflow convection-film cooling of a combustor wall

1.
College of Energy and Power Engineering, Nanjing University of Aeronautics, Nanjing 210016, China
2.
China Gas Turbine Establishment, Chengdu 610500, China

摘要: 采用FLUENT软件对冲击-逆向对流-气膜冷却结构进行了流固耦合计算, 得到了对流通道和气膜形成区流场、流体温度场以及固壁温度场分布, 分析了该冷却结构内部复杂的流动和换热情况.计算研究目的是摸索一种火焰筒壁温的计算方法, 以较好地获得火焰筒壁温分布.计算结果和试验结果进行了对比, 两者有较好的吻合性.分析表明采用流固耦合计算获取冲击-逆向对流-气膜冷却结构的壁温分布是可行的.
- 航空、航天推进系统 /
- 冷却 /
- 流固耦合 /
- 热传导 /
- 数值仿真
Abstract: Fluid/solid conjugated heat transfer numerical simulation was conducted to study impingement-counterflow convection-film cooling by using the commercial codes FLUENT.The flow fields of convection passage and film forming region,and temperature distributions of fluid and solid wall were obtained and analyzed.The numerical study aims at obtaining a calculation method of flame tube wall temperature.The numerical results showed that the agreement with the experimental data was fairly good.Analyses indicated the fluid/solid conjugated heat transfer numerical simulation is a feasible way to obtain the wall temperature of impingement-counterflow convection-film cooling.
- aerospace propulsion system /
- cooling /
- fluid/solid conjugation /
- heat transfer /
- numerical simulation

[1]	Lefebvre A H.Gas turbine combustion[M].New York:Hemisphere Publishing Corporation,1983.
[2]	侯晓春,季鹤鸣,刘庆国,等.高性能航空燃气轮机燃烧技术[M].北京:国防工业出版社,2002.
[3]	陶文铨.数值传热学[M].第2版.西安:西安交通大学出版社,2001.
[4]	全栋梁.层板冷却特性的研究[D].西安:西北工业大学,2003.
[5]	全栋梁,刘松龄,李江海,等.层板冷却特性的实验与数值模拟研究[J].推进技术,2004,25(2):134-138.QUAN Dongliang,LIU Songling,LI Jianghai,et al.Experimental and numerical investigation of the cooling characteristics in a laminate porous plate[J].Journal of Propulsion Technology,2004,25(2):134-138.
[6]	Anon.FLUENT user's guide[M].Lebanon,NH:Flunet Inc.,1999.