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Aerodynamic coefficients and pressure distribution on two circular cylinders with free end immersed in experimentally produced downburst-like outflows.
- Source :
-
Advances in Structural Engineering . Feb2021, Vol. 24 Issue 3, p522-538. 17p. - Publication Year :
- 2021
-
Abstract
- Thunderstorms winds are localized and transient phenomena characterized by three-dimensional non-stationary velocity fields. While numerous studies investigated the wind loading on cantilevered structures under thunderstorm downburst winds, there is a lack of fundamental research on the behavior of simple circular cylinders subjected to downburst-like outflows. This paper investigates the pressure distribution and aerodynamic coefficients of two cylinders with different diameters immersed in three different types of wind: (1) isolated downburst (DB); (2) downburst embedded in an atmospheric boundary layer (ABL) wind (DBABL); and (3) steady ABL wind. The focus of this study is to provide a comparative analysis between aerodynamic coefficients (drag and lift) and surface pressures that result from these three different wind systems. The ABL winds caused a higher drag on the thinner cylinder than the two DB-like outflows. The lift coefficients during the primary vortex passage in the DB-like outflows were negative at the base of the cylinders and approached zero or to slightly positive values close to the cylinders' top. The location of the cylinders in DB-like outflows is the dominant factor for their aerodynamics. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13694332
- Volume :
- 24
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Advances in Structural Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 148517035
- Full Text :
- https://doi.org/10.1177/1369433220958763