涡轮叶片内部回转通道的换热实验

王晓增; 张丽; 朱惠人; 梁卫颖

涡轮叶片内部回转通道的换热实验

西北工业大学动力与能源学源, 西安 710072

计量
- 文章访问数: 3202
- HTML浏览量: 441
- PDF量: 38
- 被引次数: 0
出版历程
- 收稿日期: 2010-06-11
- 修回日期: 2010-10-20
- 刊出日期: 2011-07-28

Heat transfer measurements of turn-over channel in turbine blade

School of Power and Energy, Northwestern Polytechnical University,Xi'an 710072,China

摘要

摘要: 用实验的方法研究了发动机涡轮叶片内部带肋回转通道壁面的换热特性.用瞬态液晶测量方法测量了整个叶片内部三个通道的全表面换热分布.研究了不同的气流雷诺数情况下和三个出口不同的出流比情况下对换热的影响.结果表明:在相同的出流比情况下,通道的平均努塞尔数随着入口雷诺数的增加而增大;在实验范围内,当进口雷诺数一定的情况下,三个出口出流比例为0%, 75%和 25%时整个通道的平均换热最强;在弯道处布置放射状的肋片,能够非常好地增强换热.
- 涡轮 /
- 液晶 /
- 冷却叶片 /
- 换热 /
- 回转通道
Abstract: An experiment was performed on a facility with ribbed turn-over channel built based on the inner structure of the real turbine blade.A transient liquid crystal was used to measure the heat transfer coefficients of three channels in turbine blade.The influences of Reynolds number and different outlet discharge ratios on the heat transfer of the ribbed walls were studied on the premise that the channel area changes continually.The experiment results show that:the average Nusselt number for the channel increases with the inlet Reynolds number when the outlets discharge ratio is fixed.With the fixed inlet Reynolds number,the average heat transfer of the channel is best when three outlet discharge ratios are 0%,75% and 25%,respectively.Also,the ribs in the corners can significantly enhance the heat transfer.
- turbine /
- liquid crystal /
- cooling blade /
- heat transfer /
- turn-over channel

HTML

参考文献(18)

[1]	Han J C.Gas turbine heat transfer and cooling technology [M].America:Taylor & Francis,2001.
[2]	Han J C,Clicksman L R.An investigation of heat transfer and friction for rib-roughened surfaces[J].International Journal of Heat and Mass Transfer,1978,21(9):1143-1156.
[3]	Ekkad S V,Han J C.Detailed heat transfer distributions in two-pass square channels with rib turbulators[J].International Journal of Heat and Mass Transfer,1997,40 (11):2525-2537.
[4]	Han J C.Heat transfer and friction characteristics in rectangular channels with rib turbulators[J].ASME International Journal of Heat and Mass Transfer,1988,110(2):321-328.
[5]	Ekkad S V,Huang Y Z,Han J C.Detailed heat transfer distributions in two-pass square channels with rib turbulators and bleed holes[J].International Journal of Heat and Mass Transfer,1998,41(23):3781-3791.
[6]	Al-Qahtani M,Jang Y J,Chen H C,et al.Prediction of flow and heat transfer in rotating two-pass rectangular channels with 45-deg rib turbulators[J].ASME Journal of Turbomachinery,2002,124(4):146-152.
[7]	Zehnder F,Schüler M,Weigand B,et al.The effect of turning vanes on pressure loss and heat transfer of a ribbed rectangular two-pass internal cooling channel .ASME Paper GT2009-59482,2009.
[8]	裘云,朱惠人,倪萌,等.带肋壁与出流孔内流通道中肋角度对流量系数的影响[J].航空动力学报,2003,18(2):233-238. QIU Yun,ZHU Huiren,NI Meng,et al.Effect of rib turbulator orientation on the discharge coefficient of suctionhole in the internal passage[J].Journal of Aerospace Power,2003,18(2):233-238.(in Chinese)
[9]	李广超,朱惠人,郭涛.带肋和气膜孔内冷通道换热机理研究[J].西北工业大学学报,2006,24(4):505-509. LI Guangchao,ZHU Huiren,GUO Tao.Heat transfer in rectangular channel with rib turbulators and film-cooling holes considered[J].Journal of Northwestern Polytechnical University,2006,24(4):505-509.(in Chinese)
[10]	邓宏武,魏喆,丁水汀,等.带肋回转变截面通道内换热特性的实验研究[J].航空动力学报,2004,25(4):343-348. DENG Hongwu,WEI Zhe,DING Shuiting,et al.Experimental investigation of heat transfer in a turn-over variable cross section channel with ribs[J].Journal of Aerospace Power,2004,25(4):343-348.(in Chinese)
[11]	魏喆,邓宏武,陶智,等.带交叉肋变截面回转通道内换热的实验研究[J].航空动力学报,2004,19(5):645-649. WEI Zhe,DENG Hongwu,TAO Zhi,et al.Experiment investigation of heat transfer in turn-over variable cross section channels with interleaving ribs[J].Journal of Aerospace Power,2004,19(5):645-649.(in Chinese)
[12]	戚磊,丁水汀,徐国强,等.带肋变截面回转通道内换热特性的实验研究[J].航空动力学报,2003,18(5):629-633. QI Lei,DING Shuiting,XU Guoqiang,et al.An experimental study of flow performance in a 180° turn-over channel with ribs[J].Journal of Aerospace Power,2003,18(5):629-633.(in Chinese)
[13]	张广礼,丁水汀,陶智,等.气膜出流条件下回转通道换热特性实验研究[J].推进技术,2004,25(1):32-35. ZHANG Guangli,DING Shuiting,TAO Zhi,et al.An experimental study of heat transfer characteristics in a turn-over channel with rib and film cooling[J].Journal of Propulsion Technology,2004,25(1):32-35.(in Chinese)
[14]	邓宏武,张炜,陶智.旋转状态下带肋U形通道内换热的实验研究[J].推进技术,2000,21(1):26-29. DENG Hongwu,ZHANG Wei,TAO Zhi.Experiment investigation on heat transfer within a rotating ribber serpenting passage[J].Journal of Propulsion Technology,2000,21(1):26-29.(in Chinese)
[15]	邓宏武,陶智,徐国强,等.旋转带肋U型通道内流动与换热的数值模拟[J].推进技术,2005,26(4):296-301. DENG Hongwu,TAO Zhi,XU Guoqiang,et al.Simulation of turbulent flow and heat transfer in a rotating ribbed serpentine passage[J].Journal of Propulsion Technology,2005,26(4):296-301.(in Chinese)
[16]	邓宏武,魏喆,陶智,等.旋转状态下蛇形通道内流动与换热的机理研究[J].航空学报,2005,26(4):411-416. DENG Hongwu,WEI Zhe,TAO Zhi,et al.Study on mechanism of turbulent flow and heat transfer in rotating passages[J].Acta Aeronautiac et Astronautica Sinica,2005,26(4):411-416.(in Chinese)
[17]	苏福斌,朱惠人,郭涛,等.内冷通道带肋和出流孔壁面的换热研究[J].航空动力学报,2009,24(7):1500-1506. SU Fubin,ZHU Huiren,GUO Tao,et al.Heat transfer enhancement within an internal passage by combinations of ribs and suction holes[J].Journal of Aerospace Power,2009,24(7):1500-1506.(in Chinese)
[18]	Yan Y Y,Owen J M.Uncertainties in transient heat transfer measurements with liquid crystal[J].International Journal of Heat and Fluid Flow,2002,23(1):29-35.