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JOURNALS // Journal of Siberian Federal University. Mathematics & Physics // Archive

J. Sib. Fed. Univ. Math. Phys., 2024 Volume 17, Issue 2, Pages 229–237 (Mi jsfu1152)

Approximate solution to a model of the far momentumless axisymmetric turbulent wake

Alexey V. Schmidt

Institute of Computational Modelling SB RAS, Krasnoyarsk, Russian Federation

Abstract: The flow in the far axisymmetric momentumless turbulent wake is described with the use of a mathematical model based on $k-\varepsilon$ semi-empirical model of turbulence. A group-theoretical analysis of the mathematical model of the wake is performed. The similarity reduction of the model to a system of ordinary differential equations is obtained. Asymptotic expansion of the solution in the vicinity of a singular point is used to construct approximate solution of corresponding boundary value problem.

Keywords: far momentumless axisymmetric turbulent wake, approximate solution, asymptotic expansion.

UDC: 532.517.4

Received: 10.09.2023
Received in revised form: 28.10.2023
Accepted: 26.12.2023

Language: English



© Steklov Math. Inst. of RAS, 2025