Numerical Investigation of Macro Flow Dynamics of Downburst Wind Over Buildings and the Interference Effect

Abstract

A “Downburst” is an important weather phenomenon in which an air mass comes down with high velocity towards the ground from the cloud level during a Thunderstorm. Thunderstorms occur frequently in the eastern and Northeastern part of India. Thunderstorms over the Gangetic West Bengal and Assam are popularly known as ‘Kalbaishakhi’ and ‘Bardoisila’, respectively. Severe thunderstorms are known to cause detrimental impact on various facets of national activity like civil and defense operations, aviation, space vehicle launching, agriculture in addition to its damage potential to life and properties of human beings and animals. Extreme wind conditions during thunderstorm downburst also cause extensive damages to earth fixed structures and aviation. In this paper an attempt is made to study the macro flow dynamics of downburst wind.

Keywords: Downburst, streamline pattern, pressure coefficient, building shape, macro flow dynamics

Cite this Article

Kalyan Kumar Das, Hirak Ranjan Das. Numerical Investigation of Macro Flow Dynamics of Downburst Wind over Buildings and the Interference Effect. Journal of Aerospace Engineering & Technology. 2018; 8(1): 11–20p.