Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Wind and Structures Volume 32, Number 2, February 2021 , pages 115-126 DOI: https://doi.org/10.12989/was.2021.32.2.115 |
|
|
|
Wind flow modification by a jet roof for mitigation of snow cornice formation |
||
Ganesh Kumar, Ajay Gairola and Aditya Vaid
|
||
| Abstract | ||
| The snow cornice mass on the formation zone had triggered avalanches which led to the loss of human life and property. Snow cornice is formed due to flow separation on the leeward side. Effect of lee slope is more prominent in the formation of snow cornices as compared to the windward slope. The analysis of wind flow pattern has been carried out to evaluate the performance of a jet roof. Computational Fluid Dynamics (CFD) analysis of wind flow over a 2D hill model was carried out using RNG based k-ε turbulence models available in ANSYS Fluent. Effect of varying leeward hill slope (1:2 to 1:6) on flow separation for the given windward slope was observed and a critical slope of 1:4 was found at which the separation zone ceased to exist. The modification of wind flow over a hill due to the installation of jet roof was simulated. It was observed that jet roof had significantly modified the wind flow pattern around hill ridgeline and ultimately snow cornice formation had mitigated. The results of the wind flow pattern were validated with the wind data collected at the experimental site, Banihal Top (Jammu and Kashmir, India). The wind flow simulation over the hill and mitigation of cornice formation by the jet roof has been explained in the present paper. | ||
| Key Words | ||
| computational fluid dynamics; turbulence; wind; jet roof; separation zone | ||
| Address | ||
| Ganesh Kumar:Defence Geo-Informatics Research Establishment, Defence Research and Development Organization,Himparisar, Sector-37A, Chandigarh, PIN-160036, India Ajay Gairola:Civil Engineering Department, Indian Institute of Technology, Roorkee, Uttarakhand, PIN-247667, India Aditya Vaid:Defence Geo-Informatics Research Establishment, Defence Research and Development Organization,Himparisar, Sector-37A, Chandigarh, PIN-160036, India | ||