Application of Active Aerodynamics to Avoid Resonant Vortex-Induced Vibrations of Chimneys

When exposed to the wind on the structure, the flow is periodically disrupted with a certain frequency, prompting an effort in the transverse direction of the wind orientation. When the frequency of natural oscillations of the structure and the frequency of stall of the vortices coincide, the phenomenon of resonant vortex excitation occurs. The article analyzes the existing methods of avoiding this dangerous phenomenon in relation to such a class of structures as exhaust pipes and chimneys. A new method is proposed, called by the authors the method of active aerodynamics, consisting in the use of moving parts in the structure that change its aerodynamic characteristics. To find the aerodynamic characteristics of the modified cross-section, a Software package ANSYS (Fluent) is used. The method makes it possible not to prevent the formation of vortices, not to extinguish them, but to bypass the resonance zone altogether.

I.A. CHERNYI, Master’s Student (This email address is being protected from spambots. You need JavaScript enabled to view it.),
A.I. KARAKOZOVA, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)

National Research Moscow State University of Civil Engineering (26, Yaroslavskoe Highway, Moscow, 129337, Russian Federation)

1. Lei Wang, Zheng Wang, Nan Huang, Xing-Yan Fan, Zhen-hua Zhang Comparative analysis of cross-wind load code for high structures with circular sections. Structures. 2022. Vol. 43, pp. 1177–1186. DOI: https://doi.org/10.1016/j.istruc.2022.07.008
2. Ostroumov B.V. Research, development and implementation of high-rise structures with vibration dampers. Doctor Diss. (Engineering). Moscow. 2003. 425 p. (In Russian).
3. Nikitin P.N., Onosov G.V. Experience in chimney design. Promyshlennoe i gragdanskoe stroitelstvo. 2009. No. 5, pp. 24–27. (In Russian).
4. Ostroumov B.V., Karakozova A.I., Karakozova V.I. Implementation of B.G. Korenev’s ideas in the field of equipping high-rise structures with dynamic vibration dampers. Promyshlennoe i gragdanskoe stroitelstvo. 2010. No. 11, pp. 43–45. (In Russian).
5. Tamura Y. Application of damping devices to suppress wind-induced responses of buildings. Journal of Wind Engineering and Industrial Aerodynamics. 1998. Vol. 74–76, pp. 49–72.
6. Olfati R.S., Zaki Z. Features of the use of spoilers for steel chimneys. Innovations and Investments. 2022. No. 10, pp. 198–201. (In Russian).
7. Flaga A., Kłaput R., Flaga Ł., Krajewski P. Wind tunnel model tests of wind action on the chimney with grid-type curtain structure. Archives of civil engineering. 2021. Vol. LXVII. Iss. 3, pp. 177–196. DOI: 10.24425/ace.2021.138050
8. Solovov A.V., Menshikova A.A. Konstruktsiya samoletov: fundamental’nye osnovy i klassika tipovykh reshenii [Aircraft Design: fundamentals and classics of typical solutions: textbook for universities]. Moscow: Yurayt. 2022. 385 p. (In Russian).
9. Berezin M.A., Katyushin V.V. Atlas aerodinamicheskikh kharakteristik stroitel’nykh konstruktsii [Atlas of aerodynamic characteristics of building structures]. Novosibirsk: Olden-poligrafiya. 2003. 130 p. (In Russian).
10. Alekhin V.N., Antipin A.A., Gorodilov S.N., Khramtsov S.V., Burkov E.A., Konovalova M.I. Numerical Modeling of Wind Effects on High-Rise Buildings. Modern City: Design, construction and development (Yeltsin readings): proceedings of the international scientific and practical conference on construction and architecture (Yekaterinburg, April 23–24, 2014). Ekaterinburg: UrFU. 2014, pp. 246–253. (In Russian).