西安交通大学叶轮机械研究所,西安,710049
李军(通信作者),教授,博士生导师。基金项目: 国家自然科学基金资助项目(52376029)。
网络首发:2014-09-10,
纸质出版:2014
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高庆, 李军. 径向轮缘密封封严效率的数值研究[J]. 西安交通大学学报, 2014,48(9):55-61.
Numerical Investigations for Sealing Efficiency of the Turbine Rim Radial Seal[J]. 2014, 48(9): 55-61.
高庆, 李军. 径向轮缘密封封严效率的数值研究[J]. 西安交通大学学报, 2014,48(9):55-61. DOI: 10.7652/xjtuxb201409010.
Numerical Investigations for Sealing Efficiency of the Turbine Rim Radial Seal[J]. 2014, 48(9): 55-61. DOI: 10.7652/xjtuxb201409010.
通过SST湍流模型求解三维Reynolds-Averaged Navier-Stokes(RANS)方程组
研究了涡轮径向轮缘密封封严特性
采用附加变量法研究了主流入侵程度
数值计算获得的主流通道压力及轮缘密封封严效率分布与实验数据吻合良好
在此基础上研究了几何结构参数对涡轮径向轮缘密封的封严性能的影响规律。结果表明:径向轮缘密封封严效率随着密封内齿长度的增加而升高
随着径向间隙尺寸的减小而升高; 密封径向内齿向下倾斜时
密封封严效率提高; 与径向内齿安装在静盘侧相比
安装在动盘侧时的密封封严效率更高; 密封的轴向及径向等几何参数一定时
采用迎风齿结构可以提高径向轮缘密封的封严性能。
The sealing efficiency of turbine rim radial seal is numerically investigated by 3-D Reynolds-averaged Navier-Stokes(RANS)equations and SST turbulence model
and the additional passive tracer method is used to simulate the mainstream ingestion phenomenon. The rim seal experimented in Bath university is selected as the calculation objective to verify the numerical accuracy
and the predicted distribution of pressure in blade passage and sealing efficiency of the rim seal at different cooling flow rates well agree with the experimental data. The influence of geometry parameter on sealing effectiveness of turbine radial rim seal is numerically investigated. The numerical results show that sealing efficiency of the rim seal increases with increasing inner fin length; the sealing efficiency of rim seal increases with decreasing radial clearance; the rim seal set with inner fin set on rotor disk has the higher efficiency than that on stator disk. With the same axial and radial parameters
upwind fin structure can improve the sealing performance of the radial rim seal.
SCHULER P, KURZ W, DULLENKOPF K, et al. The influence of different rim seal geometries on hot-gas ingestion and total pressure loss in a low-pressure turbine, ASME GT2010-22205[R]. New York, USA: ASME, 2010.
ROY R P, FENG J, NARZARY D, et al. Experiment on gas ingestion through axial-flow turbine rim seals[J]. ASME Journal of Engineering for Gas Turbine and Power, 2005, 127(7): 573-582.
BOHN D E, DECKER A, MA H W, et al. Influence of sealing air mass flow on the velocity distribution in and inside the rim seal of the upstream cavity of a 1.5-stage turbine, ASME GT2003-38459[R]. New York, USA: ASME, 2003.
ZHOU D W, ROY R P, WANG C Z, et al. Main gas ingestion in a turbine stage for three rim cavity configurations[J]. ASME Journal of Turbomachinery, 2011, 133(3): 031023.
HILLS N J, CHEW J W, TURNER A B. Computational and mathematical model of turbine rim seal ingestion[J]. ASME Journal of Turbomachinery, 2002, 124(2): 306-315.
MIRZAMOGHADAM A V, HEITLAND G, MORRIS M C, et al. 3D CFD ingestion evaluation of a high pressure turbine rim seal disk cavity, ASME GT2008-50531[R]. New York, USA: ASME, 2008.
ZHOU Kunyuan, WILSON M, OWEN J M, et al. Computation of ingestion through gas turbine rim seals, ASME GT2011-45314[R]. New York, USA: ASME, 2011.
SANGAN C M, SCOBIE J A, OWEN J M, et al. Experimental measurements of ingestion through turbine rim seals: part 3 Single and double seals, ASME GT2012-68493[R]. New York, USA: ASME, 2012.
高庆, 陶加银, 宋立明, 等. 涡轮轮缘密封封严效率的数值研究[J]. 西安交通大学学报, 2013, 47(5): 12-17.
GAO Qing, TAO Jiayin, Song Liming, et al. Numerical investigation on the sealing efficiency of the turbine rim seal[J]. Journal of Xi'an Jiaotong University, 2013, 47(5): 12-17.
陶加银,高庆,宋立明,等.涡轮轮缘密封非定常主流入侵特性的数值研究.2014,48(1):53-59.[doi:10.7652/xjtuxb 201401010]
邱波,李军,冯增国,等.两级刷式密封泄漏特性的实验与数值研究.2013,47(7):7-12.[doi:10.7652/xjtuxb201307002]
高庆,陶加银,宋立明,等.涡轮轮缘密封封严效率的数值研究.2013,47(5):12-17.[doi:10.7652/xjtuxb201305003]
晏鑫,李军,丰镇平.迷宫密封传热特性的数值研究.2012,46(11):1-5.[doi:10.7652/xjtuxb201211001]
高广新,袁竹林,周阿朋,等.二甲醚发动机燃料供给系统偶件间隙泄漏测量.2012,46(11):12-16.[doi:10.7652/xjtuxb 201211003]
李志刚,李军,丰镇平.袋型阻尼密封转子动力特性的多频单向涡动预测模型.2012,46(5):13-18.[doi:10.7652/xjtuxb 201205003]
陈成军,杨国庆,常东方,等.面向结合面密封性能要求的装配连接工艺设计.2012,46(3):75-83.[doi:10.7652/xjtuxb 201203014]
邱波,李军.刷式密封传热特性研究.西安交通大学学报,2011,45(09):94-100.[doi:10.7652/xjtuxb201109018]
陈春新,邱波,李军,等.刷式密封迟滞特性的数值研究.2011,45(5):36-41.[doi:10.7652/xjtuxb201105007]
李志刚,郎骥,李军,等.迷宫密封泄漏特性的试验研究.2011,45(3):48-52.[doi:10.7652/xjtuxb201103009]
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