The Oseen model for internal separated flows

On Oseen Flows for Large Reynolds Numbers

This investigation offers a detailed analysis of solutions to the two–dimensional Oseen problem in the exterior of an obstacle for large Reynolds numbers. It is motivated by mathematical results highlighting the important role played by the Oseen flows in characterizing the asymptotic structure of steady solutions to the Navier–Stokes problem at large distances from the obstacle. We compute sol...

Simulating separated flows using the k - ε model

the use of appropriate madm model for ranking the vendors of mci equipments using fuzzy approach

abstract nowadays, the science of decision making has been paid to more attention due to the complexity of the problems of suppliers selection. as known, one of the efficient tools in economic and human resources development is the extension of communication networks in developing countries. so, the proper selection of suppliers of tc equipments is of concern very much. in this study, a ...

Internal stabilization of the Oseen-Stokes equations by Stratonovich noise

(1) ∂X ∂t − ν∆X + (f · ∇)X + (X · ∇)g = ∇p in (0,∞)×O, ∇ ·X = 0 in (0,∞)×O, X(0, ξ) = x(t), ξ ∈ O, X = 0 on (0,∞)× ∂O. Here, O is an open and bounded subset of R, d = 2, 3, with smooth boundary ∂O and f, g ∈ C2(O;Rd) are given functions. In the special case g ≡ 0, system (1) describes the dynamic of a fluid Stokes flow with partial inclusion of convection acceleration (f ·∇)X (X is the velocity...

Near - wall damping in model predictions of separated flows

Data from the near-wall region of an attached and a separated turbulent boundary layer are used for the development of near-wall damping functions utilized in turbulence modelling. The model considered is an explicit algebraic Rey-nolds stress model. The data are taken from two direct numerical simulations. The turbulent boundary layer equation is analyzed in order to extend the validity of exi...