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Evaluating the Effect of Roadside Parking on a Dual-Direction Urban Street

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Impact of corner optimization measures on the interference effects between two square section buildings.

Te Zhang¹, Fanghui Li², Jiahong Fan¹

¹School of Civil Engineering, Heilongjiang University, Harbin, 150080, China.

Scientific Reports

|February 14, 2025

Summary

Aerodynamic corner treatments significantly alter wind-induced interference effects between twin buildings. Rounded corners reduce wind pressure shielding, while chamfered corners amplify effects, impacting structural design.

Keywords:

Aerodynamic coefficient Interference effect Large eddy simulation Non-Gaussian characteristics Side-by-side square cylinders

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Area of Science:

Fluid dynamics
Wind engineering
Structural engineering

Background:

High-rise twin buildings experience wind-induced interference effects.
Aerodynamic optimization can mitigate these effects.
Understanding corner geometry's role is crucial for building design.

Purpose of the Study:

To investigate the impact of aerodynamic corner optimizations on wind-induced interference effects between twin buildings.
To analyze wind load characteristics and flow mechanisms under varying spacing ratios.
To compare the effectiveness of chamfered, rounded, and recessed corner treatments.

Main Methods:

Large eddy simulations (LES) were used to model wind load characteristics.
Simulations were validated against experimental data and previous studies.
Ten spacing ratios (B/L from 1.2 to 8) and three corner treatments (chamfered, rounded, recessed) were analyzed at Re=22,000.

Main Results:

Rounded corners showed the most significant wind pressure shielding effect.
Chamfered corners exhibited the strongest wind pressure amplification effect.
Recessed corners displayed a bimodal wind pressure distribution at critical spacing.

Conclusions:

Corner geometry is a key factor in managing wind interference effects.
Specific corner treatments offer distinct advantages for wind load mitigation.
Findings inform aerodynamic design strategies for tall building clusters.