Numerical Modeling of Some Free Turbulent Flows

Черных, Г. Г.; Demenkov, A. G.; Fomina, A. V.; Ilyushin, B. B.; Kostomakha, V. A.; Moshkin, N. P.; Voropayeva, O. F.

doi:10.1007/978-3-540-69010-8_8

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“…Available experimental data [1][2][3] and numerical calculations [4,5] show that the flow in the far turbulent wake can be considered to be close to a self-similar flow. Kaptsov and Efremov [6] found self-similar solutions of the k-ε model of turbulence [7].…”

Section: Introductionmentioning

confidence: 99%

Self-similar solutions of the second-order model of the far turbulent wake

Капцов

Efremov

Shmidt

2008

J Appl Mech Tech Phys

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A second-order semi-empirical two-dimensional model of turbulence in the approximation of the far turbulent wake is considered. The sought quantities are the velocity defect, kinetic turbulent energy, energy dissipation, and Reynolds stress. The full group of transformations admitted by this model is found. Self-similar solutions satisfying natural boundary conditions are constructed. The solutions obtained agree with experimental data. [4,5] show that the flow in the far turbulent wake can be considered to be close to a self-similar flow. Kaptsov and Efremov [6] found self-similar solutions of the k-ε model of turbulence [7]. The objective of the present work was to construct self-similar solutions of the u v -k-ε model [8][9][10] used to calculate the characteristics of the far turbulent wake behind a plane or an axisymmetric body: Introduction. Available experimental data [1-3] and numerical calculations

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Section: Introductionmentioning

confidence: 99%