Numerical Models of Wind Effects on Temperature Loaded Object
| Autor: | Vladimíra Michalcová, Iveta Skotnicova, Lenka Lausova, Sergej Kuznetsov |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Wind gradient
010504 meteorology & atmospheric sciences Planetary boundary layer 020209 energy Mechanical Engineering Wind stress 02 engineering and technology Mechanics Thermal wind Atmospheric sciences 01 natural sciences Wind speed Physics::Fluid Dynamics Wind profile power law Mechanics of Materials Wind shear 0202 electrical engineering electronic engineering information engineering General Materials Science Physics::Atmospheric and Oceanic Physics Geology 0105 earth and related environmental sciences Wind tunnel |
| Zdroj: | Key Engineering Materials. 738:69-78 |
| ISSN: | 1662-9795 |
| DOI: | 10.4028/www.scientific.net/kem.738.69 |
| Popis: | Wind climate influencing wind loads on buildings and other structures, as well as the dispersion of pollutants from various surfaces is essentially determined by small-scale motions and processes occurring in the atmospheric boundary layer (ABL). The physical and thermal properties of the underlying surface, in conjunction with the dynamics and thermodynamics of the lower atmosphere influence the distribution of wind velocity in thermally stratified ABL. Atmospheric turbulence is characterized by a high degree of irregularity, three-dimensionality, diffusivity, dissipation, and a wide range of motion scales. This article describes a change of selected turbulent variables in the surroundings of flow around a thermally loaded object. The problem is solved numerically in Ansys Fluent 13.0 software using LES (Large eddy simulation) models as well as the Transition SST (Shear Stress Transport) model that is able to take into account the difference between high and low turbulence at the interface between the wake behind an obstacle and the free stream. The results are mutually compared and verified with experimental measurements in the wind tunnel. |
| Databáze: | OpenAIRE |
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