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摆盘流动与换热性能数值仿真
引用本文:杨志民,贾真,赵煜,张书华,葛新. 摆盘流动与换热性能数值仿真[J]. 航空动力学报, 2014, 29(4): 737-747. DOI: 10.13224/j.cnki.jasp.2014.04.001
作者姓名:杨志民  贾真  赵煜  张书华  葛新
作者单位:1. 北京航空航天大学 能源与动力工程学院,北京 100191;
摘    要:针对受燃烧室出口高温燃气冲刷的摆盘装置的冷却水回路,建立二维、三维物理仿真模型,模拟了冷却水在内部流道的 流动与换热过程,考察了冷却水进口压力、冷却水流量对流阻和换热性能的影响.结果表明:①摆盘冷却水进口压力由2.3×105Pa提高到8.3×105Pa,摆盘壁温变化微小,结构1壁温升高5K,结构2壁温升高7K;②冷却水进口速度由0.5m/s提高到5.3m/s,结构1壁温降低约120K,结构2壁温降低约100K,冷却效果明显;③结构2通过缩小流道的流通面积,能在更小的冷却水流量的工况下得到更好的换热效果. 

关 键 词:燃烧室   高温燃气   摆盘   流场结构   换热性能
收稿时间:2013-05-16

Numerical simulation of flow and heat transfer performance in turntable
YANG Zhi-min,JIA Zhen,ZHAO Yu,ZHANG Shu-hua and GE Xin. Numerical simulation of flow and heat transfer performance in turntable[J]. Journal of Aerospace Power, 2014, 29(4): 737-747. DOI: 10.13224/j.cnki.jasp.2014.04.001
Authors:YANG Zhi-min  JIA Zhen  ZHAO Yu  ZHANG Shu-hua  GE Xin
Affiliation:1. School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics,Beijing 100191,China;2. Shenyang Engine Design and Research Institute, Aviation Industry Corporation of China,Shenyang 110015,China;3. Aerospace Engine Research Institute, Aviation Industry Corporation of China,Beijing 100083,China
Abstract:For coolant water path of turntable scoured by hot gas at combustor exit, two-dimensional and three-dimensional physical models of were established to simulate the flow and heat transfer process in internal path. The effect of inlet pressure and mass flow of coolant water on flow resistant and heat transfer performance was investigated. The results show that: (1) increasing inlet pressure of coolant water has little influence on wall temperature of turntable, and the wall temperature of structure 1 increases by 5K and the wall temperature of structure 2 increases by 7K when the inlet pressure of coolant water of turntable increases from 2.3×105Pa to 8.3×105Pa; (2) the wall temperature of structure 1 decreases about 120K and the wall temperature of structure 2 decreases about 100K when the inlet velocity of coolant water increases from 0.5m/s to 5.3m/s; the cooling effect is obvious; (3) shortening passage area of structure 2 will gain better heat transfer effect with the smaller mass flow of coolant water.
Keywords:combustor  hot gas  turntable  flow field structure  heat transfer performance
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