盘榫间隙通道流动换热特性数值模拟研究

韩枫; 江文涛; 宋毅; 魏嵩; 徐伟建; 陈娇娜; 毛军逵

doi:10.13224/j.cnki.jasp.20250431

盘榫间隙通道流动换热特性数值模拟研究

doi: 10.13224/j.cnki.jasp.20250431

韩枫^{1, 2,},
江文涛¹,
宋毅^{1, 2},
魏嵩^1,*, ,,
徐伟建^{1, 2},
陈娇娜^{1, 2},
毛军逵¹

1.
南京航空航天大学能源与动力学院，南京 210016
2.
南京航空航天大学综合能源研究院，南京 210016

基金项目: 国家自然科学基金（52476077，52406048）；江苏省基础研究计划（BK20230890）；两机基础科学中心重大项目（P2022-A-Ⅱ-007-001）

详细信息

作者简介:
韩枫（1989-），男，副教授，博士，从事航空发动机热端部件流动与换热研究。E-mail：hanfeng@nuaa.edu.cn

通讯作者:
魏嵩（1989-），男，博士后，从事涡轮机械旋转盘腔流动传热特性分析研究。E-mail：weiway@nuaa.edu.cn

中图分类号: V231.1
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出版历程
- 收稿日期: 2025-09-14
- 网络出版日期: 2026-05-18

Numerical simulation study on flow and heat transfer characteristics in disk-mortise clearance channels

Han Feng^{1, 2
,},
Jiang Wentao¹,
Song Yi^{1, 2},
Wei Song^{1,*
, ,},
Xu Weijian^{1, 2},
Chen Jiaona^{1, 2},
Mao Junkui¹

1.
Nanjing university of Aeronautics and Astronautics，College of Energy and Power Engineering，Nanjing 210016，China
2.
Nanjing university of Aeronautics and Astronautics，Integrated Energy Institute，Nanjing 210016，China

摘要

摘要:
针对涡轮盘榫结构愈发严峻的冷却需求，采用SATES（self-adaptive turbulence eddy simulation）模型开展了涡轮盘榫槽与叶片榫头装配时产生的“S”型间隙流动通道的数值仿真研究，对比分析了其与常规矩形管通道在相同工况下的流动特性差异。研究了“S”型通道在瞬态条件下壁面平均努塞尔数随入口雷诺数和旋转雷诺数的变化规律。结果表明：“S”型通道复杂的流动结构导致其相比于矩形管通道具有更强的换热能力。在旋转状态下，“S”型通道两侧壁面换热系数展现出了明显的非对称性。相比于矩形管两侧的对称分布，“S”型通道右侧壁面的换热能力显著高于左侧壁面。两种通道内壁面平均努塞尔数均随着主流雷诺数和旋转雷诺数的增加而增大。
- 榫头榫槽 /
- “S”型通道 /
- 雷诺数 /
- 自适应湍流模型 /
- 流动与换热
Abstract:
In response to the increasingly stringent cooling requirements of turbine disc and mortise structure, an SATES (self-adaptive turbulence eddy simulation) model was employed to conduct a numerical simulation study on the “S”-shaped gap flow channels generated during the assembly of the turbine disk tenon groove and blade tenon head. The differences in flow characteristics between this channel and a conventional rectangular channel under the same operating conditions were compared and analyzed. The variation of the average wall Nusselt number with the inlet Reynolds number and the rotational Reynolds number under transient conditions in the “S”-shaped channel was investigated. Results indicated that the complex flow structure of the “S”-shaped channel led to a significantly stronger heat transfer capability compared with the rectangular channel. Under rotating conditions, the heat transfer coefficients on the two side walls of the “S”-shaped channel exhibited asymmetry. In contrast to the symmetric distribution observed in the rectangular channel, the heat transfer capability of the right-side wall in the “S”-shaped channel was significantly higher than that of the left-side wall. The average wall Nusselt number on the inner walls of both channels increased with the rise of the main flow Reynolds number and the rotational Reynolds number.
- tenon and mortise /
- “S”-shaped channel /
- Reynolds number /
- self-adaptive turbulence eddy simulation (SATES) /
- flow and heat transfer

HTML

图 1 涡轮前燃气温度的增长趋势

Figure 1. Increasing trend of gas turbine inlet temperature

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图 2 涡轮盘榫装配示意图

Figure 2. Schematic diagram of turbine disc tenon assembly

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图 3 榫头榫槽装配“S”型间隙通道示意图

Figure 3. Schematic diagram of “S”-shaped gap channel in tenon-and-mortise assembly

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图 4 “S”型通道计算域模型及分视图

Figure 4. “S”-shaped channel computational domain model and section views

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图 5 矩形管通道计算域模型及分视图

Figure 5. Rectangular channel computational domain model and sectional views

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图 6 仿真几何模型^[9]

Figure 6. Geometric model simulation^[9]

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图 7 不同湍流模型下通道壁面h随Re的变化

Figure 7. Variation of channel wall h with Re under different turbulence models

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图 8 “S”型通道及矩形管通道模型网格划分及局部加密

Figure 8. Schematic diagram of mesh generation and local enrichment for “S”-shaped channel and rectangular channel models

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图 9 网格独立性验证结果

Figure 9. Grid independence verification results

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图 10 Re=34253时，矩形管和“S”型通道内部静止状态下沿程截面压力分布云图和三维流线

Figure 10. Contour plots of pressure distribution along the cross-section and three-dimensional streamlines in the rectangular channel and “S”-shaped channel at steady flow conditions when Re=34253

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图 11 Re_ω=0时，矩形管通道和“S”型通道流量系数C_d随Re变化

Figure 11. Flow coefficients C_d for rectangular channel and“S”-shaped channel vary with Re when Re_ω=0

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图 12 Re=34253, Re_ω=0时矩形管通道和“S”型通道壁面的Nu分布

Figure 12. Nu distribution on the walls of rectangular channels and“S”-shaped channels when Re=34253 and Re_ω=0

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图 13 Re_ω=0时矩形管和“S”型通道壁面平均Nu随Re变化

Figure 13. Trend of Nu on rectangular channel and “S”-shaped channel wall surfaces with Re when Re_ω=0

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图 14 Re= 34253, Re_ω=3.565×10⁶时，不同通道内的三维流线及沿程截面时均压力分布

Figure 14. Three-dimensional streamlines and time-averaged pressure distribution along the cross-section within different channels when Re= 34253, Re_ω=3.565×10⁶

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图 15 Re=34253, “S”型通道沿程截面在不同转速下的时均无量纲速度云图及二维流线

Figure 15. Time-averaged dimensionless velocity contour diagrams and two-dimensional streamlines of the “S”-shaped channel along the cross-section at different rotational speeds at Re=34253

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图 16 Re=34253时，矩形管通道和“S”型通道流量系数C_d随Re_ω变化

Figure 16. Trend of C_d on rectangular channel and “S”-shaped channel with Re_ω when Re=34253

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图 17 Re=34253, Re_ω=3.565×10⁶时矩形管通道和“S”型通道壁面的Nu分布

Figure 17. Nu distribution on the walls of rectangular channels and “S”-shaped channels when Re=34253 and Re_ω= 3.565×10⁶

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图 18 Re=34253时，矩形管通道和“S”型通道壁面平均Nu随Re_ω变化

Figure 18. Trend of average Nu on rectangular channel and “S”-shaped channel wall surfaces with Re_ω at Re=34253

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表 1 矩形管通道计算域工况参数

Table 1. Operating parameters of the rectangular channel computational domain

工况	旋转雷诺数 Re_ω/10⁶	入口雷诺数Re	入口温度 T₀/K	入口压力 p₀/kPa
1	0	34253	900	850
2	0.671	34253	900	850
3	2.051	34253	900	850
4	3.565	34253	900	850
5	0.671	9923	900	850
6	0.671	52973	900	850

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表 2 “S”型通道计算域工况参数

Table 2. Operating parameters of the “S”-shaped channel calculation domain

工况	旋转雷诺数 Re_ω/10⁶	入口雷诺数Re	入口温度 T₀/K	入口压力 p₀/kPa
1	0	34253	900	850
2	0.671	34253	900	850
3	2.051	34253	900	850
4	3.565	34253	900	850
5	0.671	9923	900	850
6	0.671	52973	900	850

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