Numerical Investigation on the Flow and Heat Transfer Characteristics of the Flow-Around Rib Channel

doi:10.7652/xjtuxb202111002

您当前的位置：

首页 >

文章列表页 >

Numerical Investigation on the Flow and Heat Transfer Characteristics of the Flow-Around Rib Channel

更新时间：2025-07-09

- Numerical Investigation on the Flow and Heat Transfer Characteristics of the Flow-Around Rib Channel
- Vol. 55, Issue 11, Pages: 8-16(2021)
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202111002
  CLC： TK47
- Online First：10 November 2021，
  
  Published：2021
- 稿件说明：
移动端阅览
Numerical Investigation on the Flow and Heat Transfer Characteristics of the Flow-Around Rib Channel[J]. 2021, 55(11): 8-16.
DOI：

Numerical Investigation on the Flow and Heat Transfer Characteristics of the Flow-Around Rib Channel[J]. 2021, 55(11): 8-16. DOI： 10.7652/xjtuxb202111002.

摘要

为进一步提高燃气轮机叶片内部冷却中冷却通道内的换热性能

降低通道内的流动损失

采用CFX软件数值研究了在Re为20 000～80 000的范围内

肋间距与肋高比p/e=10的6种肋片在宽高比为4:1的矩形通道内的换热与阻力特性。研究结果表明:再循环区对肋片下游的换热性能有很大影响

大范围削弱再循环区域会降低通道换热性能和热力性能; 绕流肋片通道可以消除实心肋片通道肋片前后缘底部附近的传热恶化区域

而正方形绕流肋通道比圆形绕流肋通道具有更好的综合热力性能; 对于绕流肋片通道来说

随着肋片横截面积减少比例的减小

通道综合热力性能增加

但摩擦阻力增大; 边长越大的正方形绕流肋片通道的换热性能和综合热力性能越好

边长为实心肋片边长0.8倍的正方形绕流肋片通道获得了所研究肋片中的最佳综合热力性能和换热性能

相对于实心肋结构

正方形绕流肋结构的通道面积平均Nu提高了0.92%～2.73%

加热段摩擦系数减小了10.89%～11.01%

热力性能因子提高了4.92%～6.75%。

Abstract

To further improve the heat transfer performance and reduce the pressure loss in the internal cooling of gas turbine blade

the flow and heat transfer characteristics of six rib structures in the rectangular channel were numerically studied by CFX software under the Reynolds number of 20 000-80 000. The aspect ratio of the rectangular channel was 4:1

and the rib spacing to rib height ratio(p/e)was 10. The results show that the recirculation zone has a great influence on the heat transfer performance downstream of the rib

and weakening the recirculation zone will reduce the heat transfer performance. The flow-around rib can eliminate the heat transfer deterioration area near the bottom of the leading/trailing edge of the solid rib channel

and the square flow-around rib channel has better thermal performance than the circular flow-around rib channel. For the flow-around rib channels

with the decrease of the rib cross-sectional area reduction ratio ψ

the thermal performance of the channel improves

but the friction factor is increased. The square flow-around ribs with large side-lengths obtain the best thermal performance and heat transfer performance among the ribs studied in this paper. Compared with the solid ribs

the area average Nusselt number of the square flow-around ribs with large side-lengths increases by 0.92%-2.73%

and the friction factor in the heating section decreases by 10.89%-11.01%

which makes the thermal performance factor increase by 4.92%-6.75%.

关键词

Keywords

references

KAEWCHOOTHONG N,MALIWAN K,TAKEISHI K, et al. Effect of inclined ribs on heat transfer coefficient in stationary square channel [J]. Theoretical & Applied Mechanics Letters, 2017, 7(6): 344-350.

JANSANGSUK D, KHANOKNAIYAKARN C, PROMVONGE P. Experimental study on heat transfer and pressure drop in a channel with triangular V-ribs [C]∥2010 Proceedings of the International Conference on Energy and Sustainable Development. Piscataway, NJ, USA: IEEE, 2010: 1-8.

杨祺, 张宗卫, 钱伟佳, 等. 带错排V肋和反V肋矩形通道强化传热机理及规律研究 [J]. 热能动力工程, 2018, 33(4): 21-26.

YANG Qi, ZHANG Zongwei, QIAN Weijia, et al. Study of the mechanism and variation law governing the intensified heat transfer in a rectangular channel with staggered V-shaped ribs and inverted V-shaped ribs [J]. Journal of Engineering for Thermal Energy and Power, 2018, 33(4): 21-26.

刘聪, 王钊, 张宗卫. 带三角形V肋和反向V肋内冷通道强化换热机理研究 [J]. 推进技术, 2019, 40(9): 2040-2049.

LIU Cong, WANG Zhao, ZHANG Zongwei. Investigation on heat transfer augmentation in a inner-cooling passage with triangular V-shaped and inverse V-shaped ribs [J]. Journal of Propulsion Technology, 2019, 40(9): 2040-2049.

李彦霖, 饶宇, 王德强. 涡轮叶片冷却通道高性能微小肋湍流传热的数值研究 [J]. 工程热物理学报, 2018, 39(10): 2271-2279.

LI Yanlin, RAO Yu, WANG Deqiang. Numerical study on turbulent heat transfer of miniature ribs in turbine blade internal passage [J]. Journal of Engineering Thermophysics, 2018, 39(10): 2271-2279.

LIU Huichun, WANG Jianhua. Numerical investigation on synthetical performances of fluid flow and heat transfer of semiattached rib-channels [J]. International Journal of Heat and Mass Transfer, 2011, 54(1/2/3): 575-583.

苏生, 胡捷, 刘建军, 等. 交替大小肋片方腔通道内换热性能的数值模拟 [J]. 航空动力学报, 2008, 23(12): 2274-2279.

SU Sheng, HU Jie, LIU Jianjun, et al. Numerical simulation on heat transfer in duct roughened by periodic alternate scale ribs [J]. Journal of Aerospace Power, 2008, 23(12): 2274-2279.

XIE Gongnan, ZHENG Shaofei, ZHANG Weihong, et al. A numerical study of flow structure and heat transfer in a square channel with ribs combined downstream half-size or same-size ribs [J]. Applied Thermal Engineering: Design, Processes, Equipment, Economics, 2013, 61(2): 289-300.

王龙飞. 燃气涡轮叶片中新型扰流结构的换热和流动研究 [D]. 哈尔滨: 哈尔滨工业大学, 2018.

罗马, 贺宜红, 孙瑞嘉, 等. 高阻塞比肋化通道对流换热特性实验研究 [J]. 南京航空航天大学学报, 2018, 50(4): 471-476.

LUO Ma, HE Yihong, SUN Ruijia, et al. Experimental study on heat transfer characteristics of high blockage ribs channel [J]. Journal of Nanjing University of Aeronautics Astronautics, 2018, 50(4): 471-476.

龚建英, 高铁瑜, 吴伟烽, 等. 燃机透平叶片带肋直通道结构优化策略 [J]. 压缩机技术, 2019(4): 13-17.

GONG Jianying, GAO Tieyu, WU Weifeng, et al. optimized design of internal ribbed straight channels for gas turbine [J]. Compressor Technology, 2019(4): 13-17.

席雷, 徐亮, 高建民, 等. 涡轮叶片厚壁带肋通道冷却性能的实验研究 [J]. 西安交通大学学报, 2021, 55(3): 29-36.

XI Lei, XU Liang, GAO Jianmin, et al. Experimental study on the cooling performance of thick-wall ribbed channels in turbine blade [J]. Journal of Xi'an Jiaotong University, 2021, 55(3): 29-36.

HWANG J J, LIOU T M. Heat transfer in a rectangular channel with perforated turbulence promoters using holographic interferometry measurement [J]. International Journal of Heat Mass Transfer, 1995, 38(17): 3197-3207.

BUCHLIN J M. Convective heat transfer in a channel with perforated ribs [J]. International Journal of Thermal Sciences, 2002, 41(4): 332-340.

LIU Jian, HUSSAIN S, WANG Wei, et al. Heat transfer enhancement and turbulent flow in a rectangular channel using perforated ribs with inclined holes [J]. ASME Journal of Heat Transfer, 2019, 141(4): 041702.

LIOU T M, CHEN S H, SHIH K C. Numerical simulation of turbulent flow field and heat transfer in a two-dimensional channel with periodic slit ribs [J]. International Journal of Heat Mass Transfer, 2002, 45(22): 4493-4505.

HWANG J J, LIOU T M. Heat transfer and friction in a low-aspect-ratio rectangular channel with staggered perforated ribs on two opposite walls [J]. Journal of Heat Transfer, 1995, 117(4): 843-850.

YANG Y T, HWANG C W. Numerical calculations of heat transfer and friction characteristics in rectangular ducts with slit and solid ribs mounted on one wall [J]. Numerical Heat Transfer, 2004, 45(4): 363-375.

TARIQ A, PANIGRAHIP K, MURALIDHAR K. Flow and heat transfer in the wake of a surface-mounted rib with a slit [J]. Experiments in Fluids: Experimental Methods and Their Applications to Fluid Flow, 2004, 37(5): 701-719.

SHARMA N, ALI M S, TARIQ A, et al. Detailed heat transfer and friction factor characteristics in a rectangular duct with alternate solid and converging-slit ribs [J]. Experimental Heat Transfer, 2018, 31(4/5/6): 552-570.

LI Xin, XIE Gongnan, LIU Jian, et al. Parametric study on flow characteristics and heat transfer in rectangular channels with strip slits in ribs on one wall [J]. International Journal of Heat and Mass Transfer, 2020, 149: 118396.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Numerical Predictions of Flow and Heat Transfer for Rotating Internal Cooling Channels with Rib Turbulators

Thermal Performance Study on Efficient and Stable Dual-Tank Liquid Piston Near-Isothermal Expansion Process

Numerical Simulation of Convective Heat Transfer in Metal Foam Filled Pipes

Numerical Simulation for Flow Characteristics in Thermosyphon Elevation Tube with Lunate Channel

Bubble Dynamics of Water Boiling Heat Transfer in Vertical Rectangular Mini-Channel

Related Author

孙瑞嘉 2

张丽 1

郭涛 1

朱惠人 1

赵曙 1

LI Ruixiong

ZHANG Yufei

JIN Peng

Related Institution

College of Power and Energy, Northwestern Polytechnical University

(School of Energy and Power Engineering, Xi'an Jiaotong University,,)

天华化工机械及自动化研究设计院

西安交通大学动力工程多相流国家重点实验室

School of Human Settlement and Civil Engineering, Xi'an Jiaotong University

⁰