Spline for blade grids design

Methods of designing blades grids of power machines, such as equal thickness shape built on middle-line arc, or methods based on target stress spreading were invented long time ago, well described and still in use. Science and technology has moved far from that time and laboriousness of experimental...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2015-08, Vol.90 (1), p.12049
Main Authors: Korshunov, Andrei, Shershnev, Vladimir, Korshunova, Ksenia
Format: Article
Language:English
Subjects:
Blades
Design
Design analysis
Design engineering
Deviation
Mathematical analysis
Optimization
Splines
Spreading
Online Access:Get full text
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Summary:Methods of designing blades grids of power machines, such as equal thickness shape built on middle-line arc, or methods based on target stress spreading were invented long time ago, well described and still in use. Science and technology has moved far from that time and laboriousness of experimental research, which were involving unique equipment, requires development of new robust and flexible methods of design, which will determine the optimal geometry of flow passage.This investigation provides simple and universal method of designing blades, which, in comparison to the currently used methods, requires significantly less input data but still provides accurate results. The described method is purely analytical for both concave and convex sides of the blade, and therefore lets to describe the curve behavior down the flow path at any point. Compared with the blade grid designs currently used in industry, geometric parameters of the designs constructed with this method show the maximum deviation below 0.4%.
ISSN:1757-8981
1757-899X
1757-899X
DOI:10.1088/1757-899X/90/1/012049