Analysis of realistic rough surface for its globally dominant parameters using continuous wavelets

Continuous Morlet and Mexican hat wavelets are used to analyze a highly irregular rough surface replicated from real turbine blades which are roughened by deposi-tion of foreign materials. The globally dominant aspect ratio, length scale, and orientation of the roughness elements are determined. The...

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Bibliographic Details
Published in:Applied mathematics and mechanics 2014-06, Vol.35 (6), p.741-748
Main Author: 吴彦华 任慧颖
Format: Article
Language:English
Subjects:
Aircraft components
Applications of Mathematics
Classical Mechanics
Computational fluid dynamics
Deposition
Fluid- and Aerodynamics
Mathematical analysis
Mathematical Modeling and Industrial Mathematics
Mathematics
Mathematics and Statistics
Orientation
Partial Differential Equations
Turbine blades
Turbulence
Wavelet
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Summary:Continuous Morlet and Mexican hat wavelets are used to analyze a highly irregular rough surface replicated from real turbine blades which are roughened by deposi-tion of foreign materials. The globally dominant aspect ratio, length scale, and orientation of the roughness elements are determined. These parameters extracted from this highly irregular rough surface are important for the future studies of their effects on turbulent flows over this kind of rough surfaces encountered in Washington aerospace and power generating industries.
ISSN:0253-4827
1573-2754
DOI:10.1007/s10483-014-1826-6