Modeling of a Three-Dimensional Incompressible Fluid Flow in a Turbulent Boundary Layer in a Diffuser

Zubarev, V.M.

Автор: Zubarev V.M.
Журнал: Fluid Dynamics
Том: 58
Номер: 8
Год издания: 2023
Издательство: Maik Nauka/Interperiodica Publishing
Местоположение издательства: Russian Federation
Первая страница: 1684
Последняя страница: 1696
Оригинальные версии: Моделирование трехмерного течения несжимаемой жидкости в турбулентном пограничном слое диффузора
DOI: 10.1134/S0015462823602644
Аннотация: Within the framework of a three-dimensional boundary layer, the region of developed turbulent flow of an incompressible fluid under the action of a longitudinal unfavorable (positive) pressure gradient (hereinafter, referred to as UPG) in the diffuser is simulated. For a turbulent flow regime, the Reynolds-averaged Navier–Stokes equations in the boundary layer approximation are closed using a differential turbulence model based on the introduction of turbulent viscosity and the Kolmogorov–Prandtl hypotheses. Using the nonlinear least squares method (NLSM), correlation dependencies are found for the initial experimental data, which are further used in the numerical simulation. The calculated and experimental velocity profiles are compared in the region close to separation. Based on the numerical solutions of the turbulent boundary layer equations, the mechanisms of the interaction of the flows in the presence of transverse pressure gradients in an incompressible fluid are studied.https://rdcu.be/dCk1u
Добавил в систему: Зубарев Вячеслав Михайлович

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Modeling of a Three-Dimensional Incompressible Fluid Flow in a Turbulent Boundary Layer in a Diffuserстатья