Wind interference study due to spacing variation of
a centrally placed rectangular cross-section
interfering building
Bharat S. Chauhan,Anupam Chakrabarti,Ashok K. Ahuja,Adal Mengesha Yimer
Abstract
In the current study, the effect of wind interference on a principal building caused by the presence of a
centrally located interfering building is investigated through experiments conducted in a boundary layer wind tunnel.
The distance between the interfering building and the principal building is gradually changed for five different
interfering building heights. Principal and interfering buildings have the same rectangular cross-section with an aspect
ratio of 1:3. Force and pressure measurements are undertaken independently. For validation, the outcomes of the two
measurements are compared with one another and with the Indian Standards. Results of force measurement are
presented in terms of wind interference factors for different parameters, while results for pressure measurement are
expressed in terms of mean and RMS wind pressure coefficients (πΆπ and πΆπ'). The highest along-wind force reduction
is noted to be 55.15% under wind interference conditions compared to that under the stand-alone condition, according
to the force measurement results. The force measurement results are appropriately and clearly explained by the contour
plots for the mean coefficients of wind pressure. Also, it is seen that the suctions observed on the leeward and the side
faces are higher for lower height interfering buildings. The highest πΆπ value noted is 38.16% higher than that observed
for the stand-alone condition. Probability density functions plotted for critical pressure points at different spacings
reveal that πΆπ values on the side face reach closer to stand-alone condition faster compared to that on the windward
and leeward faces.
Bharat S. Chauhan β 1)Heritage and Special Structures Group, CSIR- Central Building Research Institute, Roorkee, Uttarakhand - 247667, India 2)Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
Anupam Chakrabarti β Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand - 247667, India
Ashok K. Ahuja β Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand - 247667, India
Adal Mengesha Yimer β Department of Civil Engineering, Debre Tabor University, Ethiopia
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