|
|||||
|
|
| 气膜内冷通道高度对气膜孔流量系数的影响 | |
| 引用本文： | 毛军逵,胡博,苏云亮,郭文.气膜内冷通道高度对气膜孔流量系数的影响[J].航空动力学报,2011,26(3):543-550. |
| 作者姓名： | 毛军逵 胡博 苏云亮 郭文 |
| 作者单位： | 1. 南京航空航天大学,能源与动力学院,南京,210016 2. 上海飞机设计研究院,动力燃油设计研究部,上海,200232 3. 中国航空工业集团公司,中国燃气涡轮研究院,涡轮室,成都,610500 |
| 摘 要： | 以一种基于旋流增益的强化换热技术为研究对象,对狭小受限的气膜孔内冷通道中气膜孔的流量系数开展了试验研究.试验中通过改变气膜孔雷诺数Re(4800～26000)、吹风比M(0.36～2.74)、无量纲冷却通道高度h/d(0.33～2.0)等参数,研究了狭小空间的几何结构、流动参数等对单排气膜孔平均流量系数Cd的影响,并得... |
| 关 键 词： | 气膜冷却 流量系数 内冷通道 受限空间 旋流 |
| 收稿时间： | 2010/2/23 0:00:00 |
| 修稿时间： | 2010/10/4 0:00:00 |
Experimental study of the discharge coefficient of film outflow varying with the internal cooling channel's height |
|
| MAO Jun-kui,HU Bo,SU Yun-liang and GUO Wen.Experimental study of the discharge coefficient of film outflow varying with the internal cooling channel''s height[J].Journal of Aerospace Power,2011,26(3):543-550. | |
| Authors: | MAO Jun-kui HU Bo SU Yun-liang and GUO Wen |
| Institution: | MAO Jun-kui1,HU Bo2,SU Yun-liang3,GUO Wen3(1.College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China,2.Power and Fuel System Design Department,Shanghai Aircraft Design and Research Institute,Shanghai 200232,3.The Gas Turbine Department,China Gas Turbine Establishment,Aviation Industry Corporation of China,Chengdu 610500,China) |
| Abstract: | According to the heat transfer enhancement with vortex,experiments were performed to investigate the discharge coefficient of film outflow in narrow confined space,which the ratio of the internal cooling channel height to the diameter of film cooling hole (h/d) was smaller than 1.In experiments,the rules of discharge coefficient Cd varying with the film cooling hole Reynolds number (4800~26000),blowing rate M(0.36~2.74),dimensionless of film cooling channel height h/d(0.33~2.0)were studied in detail,and the similarity criteria for discharge coefficients varying with these parameters were concluded.The experimental results show that the film cooling hole discharge coefficient increase with the film cooling hole Reynolds number when the main flow Reynolds number is constant.In the constant film cooling hole Reynolds number cases,Cd increase with the blowing rate M rising especially when M is smaller than 1.It is also found in experiments that the Cd decrease with dimensionless of film cooling channel height h/d increasing,especially in the cases which the film cooling hole Reynolds number is larger than 9500. |
| Keywords: | film cooling the discharge coefficient internal cooling channel narrow confined space vortex |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
| 点击此处可从《航空动力学报》浏览原始摘要信息 | |
| 点击此处可从《航空动力学报》下载免费的PDF全文 | |