Numerical and Experimental Investigation of Lasered Riblets on Turbine Exit Guide Vanes and the Impact on the Performance

被引：0

作者：

Leitl, P. A. ^{[1
]}

Flanschger, A. ^{[1
]}

Schreck, S. ^{[1
]}

Benauer, R. ^{[1
]}

Shiraishi, M. ^{[2
]}

Tsuchihashi, S. ^{[2
]}

Ichinose, G. ^{[2
]}

Shibazaki, Y. ^{[2
]}

Pramstrahler, S. ^{[3
]}

Murn, A. ^{[3
]}

机构：

[1] Bion Surface Technol, A-8041 Graz, Austria

[2] Nikon Inc, Next Generat Project Div, Kumagaya, Saitama, Japan

[3] Graz Univ Technol, Inst Thermal Turbomachinery & Machine Dynam, A-8010 Graz, Austria

来源：

AIAA SCITECH 2022 FORUM | 2022年

关键词：

D O I：

10.2514/6.2022-0917

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

The reduction of losses in a turbine exit casing (TEC) with lasered Riblet-surfaces is examined. So called Riblets are streamwise grooved surfaces which reduce the viscous drag in turbulent boundary layer. Since lasered Riblets have the advantage of being resistant to higher temperatures, new areas of application such as turbo machines have opened up. The Riblets were designed in a numerical way with a special algorithm. The change of flow due to Riblets is estimated with an unsteady CFD simulation. Based on the numerical design the Riblet-surface was lasered onto the suction side of the turbine exit guide vane (TEGV). Measurements were performed on a TEC with smooth TEGVs and one with riblet-TEGVs. Five-hole probe data shows a reduction in pressure loss of 7.2% in the area of the TEC.

引用

页数：14

共 10 条

[1]

Bechert D.W., ICAS C 15 LOND ENGL, V2

[2] Experiments on drag-reducing surfaces and their optimization with an adjustable geometry [J].

Bechert, DW ;

Bruse, M ;

Hage, W ;

VanderHoeven, JGT ;

Hoppe, G .

JOURNAL OF FLUID MECHANICS, 1997, 338 :59-87

[3]

Chichkov BN, 1996, APPL PHYS A-MATER, V63, P109, DOI 10.1007/BF01567637

[4]

Fang C., 1990, BELG GAS TURB AER C

[5]

Fottner M., 2002, Proceedings of ASME Turbo Expo 2002

[6]

Leiti Peter Adrian, 2018, Experimental and numerical investigation of the reduction in skin friction due to riblets applied on the surface of a Taylor-Coette cell

[7]

Leitl P. A., 2019, AIAA 2019-1625, P1625, DOI DOI 10.2514/6.2019-1625

[8] Optimal Application of Riblets on Compressor Blades and Their Contamination Behavior [J].

Lietmeyer, Christoph ;

Oehlert, Karsten ;

Seume, Joerg R. .

JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME, 2013, 135 (01)

[9]

RICHARDSON MC, 1991, P SOC PHOTO-OPT INS, V1410, P15, DOI 10.1117/12.43608

[10]

Zenz M., 2019, ETC2019-055

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