About the authors
| First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address. | Anvar V. Gumerov, candidate of technical sciences, associate professor, Kazan State University of Architecture and Engineering, Kazan, Russian Federation Е-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it , ORCID: 0000-0002-4547-8839 |
| Title of the article | Numerical calculations of force coefficients of rectangular cylinders to consider wind loads |
| Abstract. | blem statement. Taking into account wind loads in the design of high-rise structures and facilities is the main task in the total volume of design work. The calculation of wind impacts on hinged facade systems also remains a difficult task to this day. This primarily concerns the choice of fasteners for such facades, where it is required to calculate wind loads correctly. The purpose of the article is numerical studies using the turbulence model in calculating the coefficients of drag, transverse force and frequency of vortex disruptions in rectangular cylinders with different aspect ratios. To do this, the following tasks were set: a review of published works on this topic based on the analysis of published works, the selection of the most appropriate turbulence model, numerical calculations and comparison with available experimental results Results. Numerical calculations have been performed using the k-e Realizable turbulence model at incoming flow velocities corresponding to the Reynolds number 2*105. The dependences of the coefficients of drag, transverse force and the Strouhal number on the aspect ratio of rectangular cylinders are obtained. The obtained results are compared with the available experimental data. For a square section, the distribution of the pressure coefficient along its contour at maximum transverse force is given, and the average pressure coefficient is compared with available numerical and experimental data. A picture of the position of vortex structures in the wake of rectangles is given. The aerodynamic characteristics of various rectangular prisms obtained by numerical calculations showed generally good convergence with experimental data. Conclusions. The significance of the results obtained for the construction industry lies in the possibility of using the k-e Realizable turbulence model in calculations of wind loads of buildings, structures and structural elements of rectangular cross-section. |
| Keywords. | flow around a rectangular cylinder, simulation of flow around a rectangular prism, turbulence model k-e, wind load |
| For citations: | Gumerov A.V. Numerical calculations of force coefficients of rectangular cylinders to consider wind loads // Izvestiya KGASU. 2024. №3(69) P.77-87. |
