On the Size of the Step Along the Azimuth of the Wind Flow During Aerodynamic Studies of High-Rise Buildings

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Abstract

In recent decades, high-rise construction has been actively developing in the Russian Federation. This led to a significant increase in aerodynamic studies of high-altitude objects in accordance with the methodology of SP 20.13330.2016 «SNiP 2.01.07-85* Loads and Impacts». In many domestic and foreign works, when conducting such studies, the step in the azimuth angle of the wind flow is 15 degrees (less often 20 degrees). This paper presents results that show that such a wind azimuth step, in conditions of dense multi-height buildings, results in a significant underestimation of local negative peak wind loads. The question of sufficiency of the wind flow azimuth step of 5 degrees is discussed.

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About the authors

P. P. Pastushkov

Lomonosov Moscow State University; Scientific-Research Institute of Building Physics of RAACS

Author for correspondence.
Email: pavel-one@mail.ru

Candidate of Sciences (Engineering), Research Institute of Mechanics

Russian Federation, 1 Michurinskii prosp. Moscow, 119526; 21, Lokomotivniy Driveway, Moscow, 127238

A. A. Sinyavin

Lomonosov Moscow State University

Email: sinjavinaa@yandex.ru

Candidate of Sciences (Physics and Mathematics), Research Institute of Mechanics

Russian Federation, 1 Michurinskii prosp. Moscow, 119526

A. Yu. Chulyunin

Lomonosov Moscow State University

Email: chulyu-n@mail.ru

Senior Researcher, Research Institute of Mechanics

Russian Federation, 1 Michurinskii prosp. Moscow, 119526

References

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Supplementary files

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2. Fig. 1. Model of an object surrounded by nearby development elements in the working area of a wind tunnel during aero-physical modeling: a – view along the flow; b – top view

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3. Fig. 2. Diagram of the pipe A-6 of the Moscow State University Research Institute of Mechanics: 1 – nozzle; 2 – working part; 3 – diffuser; 4 – fan; 5 – DC motor; 6 – return channel; 7 – rotary blades

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4. Fig. 3. The layout of the drainage points (a) and the distribution of the basic aerodynamic coefficient Cm (b)

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5. Fig. 4. Pulsation characteristic σ=f(β) (a) and peak characteristic Cm–3σ=f(β) (b)

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6. Fig. 5. The layout of the drainage points (a) and the distribution of the basic aerodynamic coefficient Cm (b) for a detached building

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