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ORIGINAL PAPER
Numerical study of turbulent separated flows in axisymmetric diffusers based on a two-fluid model
1
Information system and mathematical sciences, Plekhanov Russian University of Economics, Uzbekistan
2
Fluid mechanics, 1Institute of Mechanics and Earthquake Engineering M.T. Urazbaev, Academy of Sciences of the Republic of Uzbekistan, Uzbekistan
3
Fluid mechanics, Institute of Mechanics and Earthquake Engineering M.T. Urazbaev, Academy of Sciences of the Republic of Uzbekistan., Uzbekistan
4
Applied Sciences, Tashkent University of Information Technologies named after Muhammad al-Khwarizmi, Uzbekistan
Submission date: 2024-05-08
Final revision date: 2024-07-24
Acceptance date: 2024-07-25
Online publication date: 2024-12-12
Publication date: 2024-12-12
Corresponding author
Bokhodir Kholboev
Information system and mathematical sciences, Plekhanov Russian University of Economics, 3 Shakhriabad, T, 100164, Tashkent, Uzbekistan
Information system and mathematical sciences, Plekhanov Russian University of Economics, 3 Shakhriabad, T, 100164, Tashkent, Uzbekistan
International Journal of Applied Mechanics and Engineering 2024;29(4):121-142
KEYWORDS
TOPICS
ABSTRACT
This paper discusses a numerical study of turbulent flow at Re = 1.56×104 in an axisymmetric diffuser with half-angle expansion α=14°, 18° и 90°. The results obtained are compared with known experimental data. The flow at the diffuser inlet is fully developed turbulent. To simulate the flow, a relatively recently developed two-fluid turbulence model in the Comsol Multiphysics software package was used. The paper also presents numerical results of the well-known SST and SA turbulence models, which are included in the Comsol Multiphysics software package. It is shown that the two-fluid turbulence model in the Comsol Multiphysics software package is capable of producing more accurate results than known models. In addition, it demonstrated good convergence and stability.
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