Open AccessEffect of Gust Wind on Flow over a Wall-Mounted Fence
Author(s) -
Dhanush Bhamitipadi Suresh,
Emmanuvel Joseph Aju,
Matthew John Zaksek,
Melissa Marie Leffingwell,
Yaqing Jin
Publication year - 2021
Publication title -
international symposium on particle image velocimetry.
Language(s) - English
Resource type - Journals
ISSN - 2769-7576
DOI - 10.18409/ispiv.v1i1.100
Subject(s) - wake , fence (mathematics) , wind tunnel , particle image velocimetry , flow (mathematics) , meteorology , mechanics , geology , environmental science , aerodynamics , physics , engineering , structural engineering , turbulence
In this work, the characteristics of incoming and wake flows downstream of wall-mounted fences under wind gust were explored with wind tunnel experiments. A time-resolved particle image velocimetry was used to capture the flow dynamics across two different fence heights. The results show that during the gust period, the wake presents distinct meandering and strong flow mixing. The Probability Density Function distribution of flow velocities indicates that the mixing effect increases with the streamwise distances. Specifically, for locations above the fence top tip, the growth of streamwise distance decreases the footprint of wind gust. However, for locations lower than the fence top tip, the local wind flows exhibit stronger variations before and after wind gust with the growth of downstream distance. Overall, at the same relative streamwise and spanwise locations downstream of fences within the wake region, the higher fence better suppresses the influence of gust wind.