Interface between turbulent flows above and within rough porous walls

• Autorzy: Pokrajac D. , Manes C.
• Języki publikacji: EN

Abstrakty

EN

This paper explores the concept of a macroscopic boundary between turbulent flows above and within rough permeable walls. The macroscopic boundary and the associated conditions for macroscopic flow variables have been thoroughly investigated for laminar, but not for turbulent flows. The literature on laminar flows follows two main conceptual models of the boundary: sharp boundary with step changes in macroscopic variables and gradual boundary with smooth changes of variables. The former approach is usually associated with the two-domain simulation models and the latter one with the single-domain models. This paper presents the derivation of the step conditions for velocity and shear stress at the macroscopic boundary between turbulent boundary layer and turbulent porous media flows. The physical meaning of the main terms in the shear stress condition is discussed in order to clarify the relationship between two-domain and single-domain simulation models.

Słowa kluczowe

EN

fluid-porous interface; momentum transfer; stress jump condition; turbulence in porous media; double-averaging methodology

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2008
• Tom: Vol. 56, no. 3
• Strony: 824--844
• Opis fizyczny: bibliogr. 48 poz.

Twórcy

autor

Pokrajac D.

autor

Manes C.

• School of Engineering, University of Aberdeen, Aberdeen, UK,

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