传热传质

Numerical Investigation of Flow and Heat Transfer in Vane Impingement/Effusion Cooling with Various Rib/Dimple Structure

展开
  • School of Power and Energy, Northwestern Polytechnical University, Xi’an 710129, China

网络出版日期: 2023-11-11

基金资助

This study is financially supported by the National Science and Technology Major Project (2017-III-0003-0027).

版权

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2023

Numerical Investigation of Flow and Heat Transfer in Vane Impingement/Effusion Cooling with Various Rib/Dimple Structure

Expand
  • School of Power and Energy, Northwestern Polytechnical University, Xi’an 710129, China

Online published: 2023-11-11

Supported by

This study is financially supported by the National Science and Technology Major Project (2017-III-0003-0027).

Copyright

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2023

摘要

本文通过研究冲击/气膜冷却中凹坑、直肋和V形肋的传热和流动特性,致力于为涡轮叶片选择性能最佳的内部冷却结构。本文采用综合冷却效率和冷却剂消耗量来评价结构的整体冷却性能。为了分析结构改进所带来的影响,本文研究了叶片弦向/展向截面和冲击靶面上的流场。研究发现,通过对横流施加阻塞作用,冲击射流可得到有效的保护,从而增强靶面的传热性能。绕流肋比凹坑结构具有更强的对横流的阻塞作用。与绕流肋的阻塞效应相比,肋形状的改变对换热的影响可以忽略不计。通过在绕流肋之间安装凹坑,冲击靶面的换热性能得到进一步增强。通过安装肋/凹坑,冲击射流孔的流量系数增加,而气膜孔的流量系数降低。因此,气膜冷却性能开始恶化。同时,绕流肋和凹坑的安装有助于减少冷却剂的总消耗量。本文还分析了肋/凹坑对内外冷却结构的传热和出流状况的影响。通过分析,整体冷却性能最好的结构是具有带有凹坑和直肋的靶面,其叶片外壁温和冷却剂消耗分别降低了14.57~28.03 K和1.19%~1.81%。本文总结了凹坑的流动机理和影响冷却性能的因素,可为涡轮静叶设计提供一定的思路。

本文引用格式

WANG Mingrui, ZHU Huiren, LIU Cunliang, WANG Rui, WU Zhuang, YAO Chunyi . Numerical Investigation of Flow and Heat Transfer in Vane Impingement/Effusion Cooling with Various Rib/Dimple Structure[J]. 热科学学报, 2023 , 32(4) : 1357 -1377 . DOI: 10.1007/s11630-023-1802-2

Abstract

By investigating heat transfer and flow structures of dimples, orthogonal ribs, and V-shaped ribs in the impingement/effusion cooling, the article is dedicated to selecting a best-performing internal cooling structure for a turbine vane. The overall cooling effectiveness and coolant consumption are adopted to evaluate the cooling performance. To analyze the influence of structural modification, the flow field is investigated on chordwise/spanwise sections and the target surface. The blockage effect on crossflow can protect jet flow, resulting in higher heat transfer performance of the target surface. Ribs own a stronger blockage effect than dimples. Compared with the blockage effect, the influence of the rib shape is negligible. By installing dimples between ribs, heat transfer is augmented further. The introduction of ribs/dimples leads to higher discharge coefficients of jet nozzles but lower discharge coefficients of film holes. Thus, the film cooling deteriorates. Meanwhile, the installation of the ribs and dimples decreases total coolant consumption. The effect of ribs/dimples on heat transfer and effusion condition of internal and external cooling is analyzed. The best-performing cooling structure is the target surface with dimples and orthogonal ribs, which decreases the wall temperature and coolant consumption by 14.57–28.03 K and 1.19%–1.81% respectively. This article concludes the flow mechanism for dimples and influence factors on the cooling performance, which may serve as guidance for the turbine vane design.

参考文献

[1] Xie Y., Wang M., Zhang G., et al., Analysis of superalloy turbine blade tip cracking during service. Engineering Failure Analysis, 2006, 13(8): 1429–1436.
[2] Nowak G., Wróblewski W., Optimization of blade cooling system with use of conjugate heat transfer approach. International Journal of Thermal Sciences, 2011, 50(9): 1770–1781.
[3] Kassab A., Divo E., Heidmann J., et al., BEM/FVM conjugate heat transfer analysis of a three - dimensional film cooled turbine blade. International Journal of Numerical Methods for Heat & Fluid Flow, 2003, 13(5): 581–610.
[4] Scholl S., Verstraete T., Duchaine F., et al., Conjugate heat transfer of a rib-roughened internal turbine blade cooling channel using large eddy simulation. International Journal of Heat and Fluid Flow, 2016, 61: 650–664.
[5] Cornaro C., Fleischer A.S., Goldstein R.J., Flow visualization of a round jet impinging on cylindrical surfaces. Experimental Thermal and Fluid Science, 1999, 20(2): 66–78.
[6] Xie G., Liu C., Ye L., et al., Effects of impingement gap and hole arrangement on overall cooling effectiveness for impingement/effusion cooling. International Journal of Heat and Mass Transfer, 2020, 152: 119449.
[7] Chang S.W., Liou H.F., Heat transfer of impinging jet-array onto concave-and convex-dimpled surfaces with effusion. International Journal of Heat and Mass Transfer, 2009, 52(19–20): 4484–4499.
[8] Zhou J., Wang X., Li J., Influences of effusion hole diameter on impingement/effusion cooling performance at turbine blade leading edge. International Journal of Heat and Mass Transfer, 2019, 134: 1101–1118.
[9] Hong S.K., Lee D.H., Cho H.H., et al., Local heat/mass transfer measurements on effusion plates in impingement/effusion cooling with rotation. International Journal of Heat and Mass Transfer, 2010, 53(7–8): 1373–1379.
[10] Xing Y., Weigand B., Experimental investigation of impingement heat transfer on a flat and dimpled plate with different crossflow schemes. International Journal of Heat & Mass Transfer, 2010, 53: 3874–3886.
[11] Rhee Dong Ho., Nam Y.W., Cho H.H., Local heat/mass transfer with various rib arrangements in impingement/effusion cooling system with crossflow. Journal of Turbomachinery, 2004, 126(4): 615–626.
[12] Kunstmann S., von Wolfersdorf J., Ruedel U., Heat transfer and pressure loss in rectangular one-side-ribbed channels with different aspect ratios. Turbo Expo: Power for Land, Sea, and Air, 2009, 48845: 251–261.
[13] Promvonge P., Changcharoen W., Kwankaomeng S., et al., Numerical heat transfer study of turbulent square-duct flow through inline V-shaped discrete ribs. International Communications in Heat and Mass Transfer, 2011, 38(10): 1392–1399.
[14] Liu Y.H., Wright L.M., Fu W.L., et al., Rib spacing effect on heat transfer and pressure loss in a rotating two-pass rectangular channel (AR= 1: 2) with 45-degree angled ribs. Turbo Expo: Power for Land, Sea, and Air, 2006, 4238: 363–373.
[15] Ekkad S.V., Huang Y., Han J.C., Detailed heat transfer distributions in two-pass square channels with rib turbulators and bleed holes. International Journal of Heat And Mass Transfer, 1998, 41(23): 3781–3791.
[16] Wright L M., Fu W L., Han J C., Thermal performance of angled, V-shaped, and W-shaped rib turbulators in rotating rectangular cooling channels (AR= 4: 1). Turbo Expo: Power for Land, Sea, and Air, 2004, 41685: 885–894.
[17] Li S., Xie G., Zhang W., et al., Computation of flow and heat transfer of a blade internal cooling passage with truncated v-shaped ribs on opposite walls. ASME International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012, 45233: 1987–1994.
[18] Ravi R.K., Saini R.P., Experimental investigation on performance of a double pass artificial roughened solar air heater duct having roughness elements of the combination of discrete multi-V shaped and staggered ribs. Energy, 2016, 116: 507–516.
[19] Ye L, Liu C, Liu H, et al., Experimental and numerical study on the effects of rib orientation angle on film cooling performance of compound angle holes. International Journal of Heat and Mass Transfer, 2018, 126: 1099–1112.
[20] Kim S.M., Kim K.Y., Evaluation of cooling performance of impinging jet array over various dimpled surfaces. Heat and Mass Transfer, 2016, 52: 845–854.
[21] Liu Y.H., Lo Y.H., Li X.X., et al., Heat transfer and friction in a square channel with ribs and grooves. Journal of Thermophysics and Heat Transfer, 2016, 30(1): 144–151.
[22] Du W., Luo L., Wang S., et al., Flow structure and heat transfer characteristics in a 90-deg turned pin fined duct with different dimple/protrusion depths. Applied Thermal Engineering, 2019, 146: 826–842.
[23] Jing Q., Zhang D., Xie Y., Numerical investigations of impingement cooling performance on flat and non-flat targets with dimple/protrusion and triangular rib. International Journal of Heat and Mass Transfer, 2018, 126: 169–190.
[24] Choi E.Y., Choi Y.D., Kwak J.S., Effect of dimple configuration on heat transfer coefficient in a rib-dimpled channel. Journal of Thermophysics and Heat Transfer, 2013, 27(4): 653–659.
[25] Zhou W., Rao Y., Hu H., An experimental investigation on the characteristics of turbulent boundary layer flows over a dimpled surface. Journal of Fluids Engineering, 2016, 138(2): 021204.
[26] Andrews G.E., Asere A.A., Mkpadi M.C., et al., Transpiration cooling: contribution of film cooling to the overall cooling effectiveness. International Journal of Turbo and Jet Engines, 1986, 3: 245–256.
[27] Rao Y., Chen P., Wan C., Experimental and numerical investigation of impingement heat transfer on the surface with micro W-shaped ribs. International Journal of Heat and Mass Transfer, 2016, 93: 683–694.
[28] Shen Z., Xie Y., Zhang D., Numerical predictions on fluid flow and heat transfer in U-shaped channel with the combination of ribs, dimples and protrusions under rotational effects. International Journal of Heat and Mass Transfer, 2015, 80: 494–512.
[29] Zhang C., Xu Q., Zhao M., et al., Effect of impingement/effusion hole-area ratio on discharge coefficients of double cooling wall. Turbo Expo: Power for Land, Sea, and Air. 2006, 4238: 569–579.
[30] Andrews G.E., Asere A.A., Mkpadi M.C., et al., Transpiration cooling: contribution of film cooling to the overall cooling effectiveness. International Journal of Turbo and Jet Engines, 1986, 3: 245–256.
[31] Han J.C., Rallabandi A., Turbine blade film cooling using PSP technique. Frontiers in Heat and Mass Transfer, 2010. DOI: 10.5098/HMT.V1.1.3001
[32] Kaur I., Singh P., Ekkad S.V., Enhanced thermal hydraulic performance by V-shaped protrusion for gas turbine blade trailing edge cooling. International Journal of Heat and Mass Transfer, 2020, 149: 119221.
[33] Xie Y., Qu H., Zhang D., Numerical investigation of flow and heat transfer in rectangular channel with teardrop dimple/protrusion. International Journal of Heat and Mass Transfer, 2015, 84: 486–496.
[34] Kumar R., Nadda R., Rana A., et al., Performance investigation of a solar thermal collector provided with air jets impingement on multi V-shaped protrusion ribs absorber plate. Heat and Mass Transfer, 2020, 56: 913–930.
[35] Kwon H.G., Hwang S.D., Cho H.H., Measurement of local heat/mass transfer coefficients on a dimple using naphthalene sublimation. International Journal of Heat and Mass Transfer, 2011, 54: 1071–1080.
[36] Rhee D.H., Choi J.H., Cho H.H., Flow and heat (mass) transfer characteristics in an impingement/effusion cooling system with crossflow. Journal of Turbomachinery, 2003, 125(1): 74–82.
[37] Ballal D R., Zelina J., Progress in aeroengine technology (1939--2003). Journal of Aircraft, 2004, 41(1): 43–50.
[38] Seo H., Kwon D., Lee S., et al., Experimental and numerical investigation of the effects of the jet diameter and arrangement of effusion holes on the concave surface of an impingement/effusion cooling system. Journal of Visualization, 2023, 26(1): 61–81.
[39] Wang M., Zhu H., Liu C., et al., Structure improvement on turbine guided vane cooling system based on conjugate heat transfer. International Journal of Thermal Sciences, 2022, 172: 107332.
文章导航

/