Effects of Aerodynamic and Operational Parameters on Sealing Performance of Turbine Rim Seal

doi:10.7652/xjtuxb201707010

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Effects of Aerodynamic and Operational Parameters on Sealing Performance of Turbine Rim Seal

更新时间：2025-07-09

- Effects of Aerodynamic and Operational Parameters on Sealing Performance of Turbine Rim Seal
- Vol. 51, Issue 7, Pages: 62-72(2017)
- 作者机构：
  
  西安西热节能技术有限公司,西安,710054
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201707010
  CLC： TH45
- Online First：10 July 2017，
  
  Published：2017
- 稿件说明：
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Effects of Aerodynamic and Operational Parameters on Sealing Performance of Turbine Rim Seal[J]. 2017, 51(7): 62-72.
DOI：

Effects of Aerodynamic and Operational Parameters on Sealing Performance of Turbine Rim Seal[J]. 2017, 51(7): 62-72. DOI： 10.7652/xjtuxb201707010.

摘要

以燃气轮机中常用的径向轮缘密封为研究对象

系统深入地研究了透平级压比、转速等参数的改变对轮缘密封封严性能的影响规律。通过求解三维RANS方程组和SST湍流模型

在基于添加示踪流体湍流输运附加变量控制方程的基础上

首先计算得到了4种透平进出口压比、4种透平级转速工况条件下的典型径向轮缘密封的封严效率; 其次

对比了不同动静叶片周向相对位置对轮缘密封封严性能的影响。研究结果表明:当透平级压比和转速变化时

将通过影响动叶前缘压力势场分布来影响轮缘密封封严性能; 随着压比的增加

周向压力不均匀程度变大

封严效率降低

入侵强度明显强化; 当转速由小到大变化时

周向压力不均匀程度得以改善

因此轮缘密封的封严效率得以提高; 动静叶相对位置变化会引起静叶尾迹与动叶前缘势场的相对干涉

导致轮缘密封封严效率出现变化

随着动叶的旋转

盘内的入侵流呈现出周期性的强化与减弱。

Abstract

Three-dimensional unsteady Reynolds-averaged Navier-Stokes(URANS)equations coupled with a fully-developed shear stress transport(SST)turbulent model were used to investigate the sealing performance of rim seal. The sealing behaviors of conventional radial rim seal at different pressure ratios and rotational speeds were numerically predicted. Based on solving the turbulence transport governing equation for additional variable used for tracing fluid

the sealing effects of conventional radial rim seal were obtained at four different pressure ratios and rotational speeds. And then the investigation on the effect of relative location of rotor and stator on the sealing performance of the radial rim seal was carried out. Numerical results showed that pressure ratio and rotational speed are the key factor influencing the seal performance of radial rim seal. Pressure ratios and rotational speeds change the sealing efficiency by influencing the blade leading edge's potential field. The seal efficiency decreases with the pressure ratio because of enhancing non-uniformity of the circumferential pressure field. And the seal efficiency increases with the rotational speed because of the improvement on the non-uniformity of circumferential pressure field. The change of relative position between vane blade and rotor blade would induce the variation of interaction between the pressure potential fields at vane blade wake and rotor blade leading edge

and hence influencing the seal efficiency. With the blade rotating

the ingestion in wheel space presents periodic enhancing and weakening.

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references

JOHNSON B V, JAKOBY R, BOHN D E, et al. A method for estimating the influence of time-dependent vane and blade pressure fields on turbine rim seal ingestion [J]. ASME Journal of Turbomachinery, 2009, 131(2): 1200-1204.

JOHNSON B V, WANG C Z, ROY R P. A rim seal orifice model with two Cds and effects of swirl in seals [C]∥ASME Turbo Expo 2008: Power for Land, Sea, Air. New York, USA: ASME, 2008: 1531-1541.

BAYLEY F J, OWEN J M. The fluid dynamics of a shrouded disk system with a radial outflow of coolant [J]. ASME Journal of Engineering for Gas Turbine and Power, 1970, 92: 335-341.

DADKHAH S, TURNER A B, CHEW J W. Performance of radial clearance rim seals in upstream and downstream rotor-stator wheelspaces [J]. ASME Journal of Turbomachinery, 1992, 114(2): 439-445.

ABE T, KIKUCHI J, TAKEUCHI H. An investigation of turbine disk cooling: experimental investigation and observation of hot gas flow into a wheel space [C]∥13th International Congress on Combustion Engines. London, UK: Palantype Organisation Ltd., 1979: 67-79.

BOHN D, RUDZINSKI B, SÜRKEN N, et al. Experimental and numerical investigation of the influence of rotor blades on hot gas ingestion into the upstreamcavity of an axial turbine stage [C]∥ASME Turbo Expo 2000: Power for Land, Sea, Air. New York, USA: ASME, 2000: 17-34.

CAO C, CHEW J W, MILINGTON P R, et al. Interaction of rim seal and annulus flows in an axial flow turbine [J]. ASME Journal of Engineering for Gas Turbine and Power, 2004, 126(4): 786-793.

BOUDET J, HILLS N J, CHEW J W. Numerical simulation of the flow interaction between turbine main annulus and disc cavities [C]∥ASME Turbo Expo 2006: Power for Land, Sea, Air. New York, USA: ASME, 2006: 553-562.

徐国强, 詹国治, 丁水汀, 等. 高位垂直进气转静系旋转盘流动与换热计算 [J]. 推进技术, 2000, 21(4): 40-43.

XU Guoqiang, ZHAN Guozhi, DING Shuiting, et al. Numerical calculation for flow and heat transfer of a shrouded rotating disk with high-positioned air-inlet [J]. Journal of Propulsion Technology, 2000, 25(4): 40-43.

孙纪宁, 陶智, 丁水汀, 等. 高位进气、径向出流的旋转腔内流动与换热的数值研究 [J]. 航空动力学报, 2002, 17(5): 586-590.

SUN Jining, TAO Zhi, DING Shuiting, et al. Numerical investigation of fluid flow and heat transfer characteristics with in a rotating cavity with a high positioned axial inlet and a radial outlet [J]. Journal of Aerospace Power, 2002, 17(5): 586-590.

周昆原, 罗翔, 徐国强. 旋转诱导燃气入侵的数值模拟 [J]. 航空动力学报, 2011, 26(12): 2704-2709.

ZHOU Kunyuan, LUO Xiang, XU Guoqiang. Numerical simulation of rotationally-induced ingress through turbine rim seal [J]. Journal of Aerospace Power, 2011, 26(12): 2704-2709.

张晶辉, 马宏伟. 波浪形轮缘封严结构影响涡轮性能的数值研究 [J]. 航空动力学报, 2015, 30(4): 865-874.

ZHANG Jinghui, MA Hongwei. Unsteady numerical investigation for effects of rim sealing flow in performance of a turbine rotor [J]. Journal of Aerospace Power, 2015, 30(4): 865-874.

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 investigations on the sealing efficiency of the turbine rim seal [J]. Journal of Xi'an Jiaotong University, 2013, 47(5): 12-17.

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.

GAO Qing, LI Jun. Numerical investigations on the sealing efficiency of the turbine radial rim seal [J]. Journal of Xi'an Jiaotong University, 2014, 48(9): 55-61.

SANGAN C M. Measurement of ingress through gas turbine rim seals [D]. Bath, UK: University of Bath, 2011.

RAI M M. Three-dimensional Navier-Stokes simulations of turbine rotor-stator interaction: Part 1 Methodology [J]. AIAA Journal of Propulsion and Power, 1989, 5(3): 305-311.

SUN Hao, LI Jun, SONG Liming, et al. Non-axisymmetric turbine endwall aerodynamic optimization design: part I Turbine cascade design and experimental validations [C]∥ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. New York, USA: ASME, 2014: GT2014-25362.

OWEN J M. Prediction of ingestion through turbine rim seals: part 1 Externally-induced ingress [C]∥ASME Turbo Expo 2009: Power for Land, Sea, Air. New York, USA: ASME, 2009: GT2009-59121.

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