A Two Dimensional Viscous Blade Flow Code Using Shifted Periodic Grids

Volume 1: Aircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery ◽

10.1115/97-gt-516 ◽

1997 ◽

Author(s):

Hongjun Li ◽

Shun Chen ◽

Harry F. Martin

Keyword(s):

Experimental Data ◽

Turbine Blade ◽

Test Data ◽

Numerical Results ◽

Numerical Prediction ◽

Blade Design ◽

Two Dimensional ◽

Code Verification ◽

High Quality ◽

Turbine Blade Design

An advanced CFD cede for turbine blade design and analysis has been developed. The non-skewed shifted periodic grids are used in the code. With this high quality grids, the accuracy of the solutions, particularly in loss predictions, are greatly improved. Extensive studies have been conducted for code verification and calibrations. Results show that the solutions are accurate and consistent. Numerical results are presented and compared with experimental data for different blade sections. Good agreements are observed between numerical prediction and test data for the cases compared.

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Advances in wind turbine blade design and materials

10.1533/9780857097286 ◽

2013 ◽

Cited By ~ 18

Author(s):

Povl Brøndsted ◽

Rogier P. L. Nijssen

Keyword(s):

Wind Turbine ◽

Turbine Blade ◽

Wind Turbine Blade ◽

Blade Design ◽

Turbine Blade Design

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Advances in ocean current turbine blade design

10.1063/5.0037622 ◽

2021 ◽

Author(s):

Hassan Mahfuz ◽

Nicholas Asseff ◽

Mohammad Wasim Akram ◽

Fang Zhou ◽

Takuya Suzuki ◽

...

Keyword(s):

Turbine Blade ◽

Ocean Current ◽

Blade Design ◽

Turbine Blade Design ◽

Current Turbine

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Wind Turbine Blade Design Review

Wind Engineering ◽

10.1260/0309-524x.36.4.365 ◽

2012 ◽

Vol 36 (4) ◽

pp. 365-388 ◽

Cited By ~ 10

Author(s):

P.J. Schubel ◽

R.J. Crossley

Keyword(s):

Wind Turbine ◽

Turbine Blade ◽

Wind Turbine Blade ◽

Blade Design ◽

Design Review ◽

Turbine Blade Design

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Influence of Turbocharger Turbine Blade Geometry on Vibratory Blade Stresses

Journal of Engineering for Gas Turbines and Power ◽

10.1115/1.4041152 ◽

2018 ◽

Vol 141 (2) ◽

Author(s):

Pavan Naik ◽

Bernhard Lehmayr ◽

Stefan Homeier ◽

Michael Klaus ◽

Damian M. Vogt

Keyword(s):

Turbine Blade ◽

High Cycle Fatigue ◽

Pressure Field ◽

Spanwise Direction ◽

Blade Design ◽

Centrifugal Forces ◽

Baseline Design ◽

Combined Stresses ◽

Blade Thickness ◽

Turbine Blade Design

In this paper, a method to influence the vibratory blade stresses of mixed flow turbocharger turbine blade by varying the local blade thickness in spanwise direction is presented. Such variations have an influence on both the static and the vibratory stresses and therefore can be used for optimizing components with respect to high-cycle fatigue (HCF) tolerance. Two typical cyclic loadings that are of concern to turbocharger manufacturers have been taken into account. These loadings arise from the centrifugal forces and from blade vibrations. The objective of optimization in this study is to minimize combined effects of centrifugal and vibratory stresses on turbine blade HCF and moment of inertia. Here, the conventional turbine blade design with trapezoidal thickness profile is taken as baseline design. The thicknesses are varied at four spanwise equally spaced planes and three streamwise planes to observe their effects on static and vibratory stresses. The summation of both the stresses is referred to as combined stress. In order to ensure comparability among the studied design variants, a generic and constant excitation order-dependent pressure field is used at a specific location on blade. The results show that the locations of static and vibratory stresses, and hence the magnitude of the combined stresses, can be influenced by varying the blade thicknesses while maintaining the same eigenfrequencies. By shifting the maximum vibratory stresses farther away from the maximum static stresses, the combined stresses can be reduced considerably, which leads to improved HCF tolerance.

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