Numerical Investigation of Galloping Instabilities in Z-Shaped Profiles
Joint Authors
Gomez, Ignacio
Chavez, Miguel
Alonso, Gustavo
Valero, Eusebio
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-06-25
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
Aeroelastic effects are relatively common in the design of modern civil constructions such as office blocks, airport terminal buildings, and factories.
Typical flexible structures exposed to the action of wind are shading devices, normally slats or louvers.
A typical cross-section for such elements is a Z-shaped profile, made out of a central web and two-side wings.
Galloping instabilities are often determined in practice using the Glauert-Den Hartog criterion.
This criterion relies on accurate predictions of the dependence of the aerodynamic force coefficients with the angle of attack.
The results of a parametric analysis based on a numerical analysis and performed on different Z-shaped louvers to determine translational galloping instability regions are presented in this paper.
These numerical analysis results have been validated with a parametric analysis of Z-shaped profiles based on static wind tunnel tests.
In order to perform this validation, the DLR TAU Code, which is a standard code within the European aeronautical industry, has been used.
This study highlights the focus on the numerical prediction of the effect of galloping, which is shown in a visible way, through stability maps.
Comparisons between numerical and experimental data are presented with respect to various meshes and turbulence models.
American Psychological Association (APA)
Gomez, Ignacio& Chavez, Miguel& Alonso, Gustavo& Valero, Eusebio. 2014. Numerical Investigation of Galloping Instabilities in Z-Shaped Profiles. The Scientific World Journal،Vol. 2014, no. 2014, pp.1-14.
https://search.emarefa.net/detail/BIM-1049333
Modern Language Association (MLA)
Gomez, Ignacio…[et al.]. Numerical Investigation of Galloping Instabilities in Z-Shaped Profiles. The Scientific World Journal No. 2014 (2014), pp.1-14.
https://search.emarefa.net/detail/BIM-1049333
American Medical Association (AMA)
Gomez, Ignacio& Chavez, Miguel& Alonso, Gustavo& Valero, Eusebio. Numerical Investigation of Galloping Instabilities in Z-Shaped Profiles. The Scientific World Journal. 2014. Vol. 2014, no. 2014, pp.1-14.
https://search.emarefa.net/detail/BIM-1049333
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1049333