Numerical study of flow around flat plate using higher-order accuracy scheme

Abstract

Analytical methods exist to solve the problems of hydromechanics and heat transfer, but it is not possible to obtain the solution to some inhomogeneous and nonlinear problems of hydromechanics and heat transfer by analytical methods. The solution to such problems is carried out using numerical methods. Currently, there are many textbooks and monographs on numerical methods for solving problems of hydromechanics, thermal conductivity, heat and mass transfer, and others. The article presents the results of a numerical study of the flow structure in the flow around a flat plate. The calculations are based on the numerical solution of a system of nonstationary equations using a two-fluid turbulence model. For the numerical solution of these problems, schemes of the second and fourth order of accuracy were applied. The control volume method was used for the difference approximation of the initial equations, and the relationship between velocities and pressure was found using the SIMPLE procedure. To confirm the correctness of the numerical results, comparisons were made with each other and experimental data.

Metodology for checking the seismic strength of buildings based on existing norms

“…Various construction organizations, research and project institutes offer organizational and technological solutions for adding additional floors, expanding buildings, expanding erkers and loggias, Diamond and strengthening structures, creating energy savings in buildings, replacing engineering networks, repairing roofs, etc. However, not all recommendations of foreign construction engineers can be applied to the territory of the Respublka of Uzbekistan [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23].…”

“…At the same time, since September 1, 2022, the introduction of the procedure for obtaining conclusions on earthquake relations to objects belonging to Category IV (objects with the highest risk factor), the risk factor under which a new construction is planned in the seismic active zones of our republic, And since October 1, it is another aspect of recognition that the procedure for introducing proposals for the gradual introduction of new housing in the territory of the Republic into the local state authorities in the place of seismically weak and accident-prone housing, which, according to the results of which the period of operation has been completed, has been established and the practice of Starting in 2023, a series of construction planned or selected buildings and structures with a height of 9 floors or higher in the seismic active zones of the Republic, testing and inspection using vibrodynamic equipment or modern digitized instrumental equipment was established in order to increase the earthquake intensity, ensure quality and eliminate defects in advance [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23].…”