Regularization modeling for large-eddy simulation of homogeneous isotropic decaying turbulence [PDF]
, 2008 Inviscid regularization modeling of turbulent flow is investigated. Homogeneous, isotropic, decaying turbulence is simulated at a range of filter widths.
Geurts, B.J., Kuczaj, A.K., Titi, E.S.
core +15 more sources
Three-Dimensional Direct Numerical Simulation (DNS) of Taylor Bubbles Rising in Non-Newtonian Environments [PDF]
14th WCCM-ECCOMAS Congress, 2021 Three-dimensional numerical simulation of Taylor gas bubbles as primary unites of slug flow patterns rising in non-Newtonian environments is performed in the context of Direct Numerical Simulation (DNS) of the governing equations, where the whole physics of fluid motions will be taken into account.
Amani, Ahmad|| +2 more
openaire +2 more sources
Direct numerical simulations of statistically steady, homogeneous, isotropic fluid turbulence with polymer additives [PDF]
, 2010 We carry out a direct numerical simulation (DNS) study that reveals the effects of polymers on statistically steady, forced, homogeneous, isotropic fluid turbulence.
A. M. Crawford +8 more
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Numerical verification of random phase-and-amplitude formalism of weak turbulence [PDF]
, 2013 The Random Phase and Amplitude Formalism (RPA) has significantly extended the scope of weak turbulence studies. Because RPA does not assume any proximity to the Gaussianity in the wavenumber space, it can predict, for example, how the fluctuation of the ...
Tanaka, Mitsuhiro, Yokoyama, Naoto
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Manifestations of Drag Reduction by Polymer Additives in Decaying, Homogeneous, Isotropic Turbulence [PDF]
, 2006 The existence of drag reduction by polymer additives, well established for wall-bounded turbulent flows, is controversial in homogeneous, isotropic turbulence. To settle this controversy we carry out a high-resolution direct numerical simulation (DNS) of
C. Canuto +5 more
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Triple-deck and direct numerical simulation analyses high-speed subsonic flows past a roughness element [PDF]
, 2015 This paper is concerned with the boundary-layer separation in subsonic and transonic flows caused by a two-dimensional isolated wall roughness. The process of the separation is analysed by means of two approaches: the direct numerical simulation (DNS) of
Kravtsova, M +3 more
core +1 more source
Numerical simulation of flow over a rough bed [PDF]
, 2004 This paper presents results of a direct numerical simulation (DNS) of turbulent flow over the rough bed of an open channel. We consider a hexagonal arrangement of spheres on the channel bed.
G. Salton +4 more
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Direct Numerical Simulation Tests of Eddy Viscosity in Two Dimensions
, 1994 Two-parametric eddy viscosity (TPEV) and other spectral characteristics of two-dimensional (2D) turbulence in the energy transfer sub-range are calculated from direct numerical simulation (DNS) with 512$^2$ resolution. The DNS-based TPEV is compared with
A. Chekhlov +5 more
core +1 more source
DNS and regularization modeling of a turbulent differentially heated cavity of aspect ratio 5 [PDF]
, 2013 This work is devoted to the study of turbulent natural convection flows in differentially heated cavities. The adopted configuration corresponds to an airfilled (Pr = 0.7) cavity of aspect ratio 5 and Rayleigh number Ra = 4.5 × 1010 (based on the ...
Gorobets, Andrei +3 more
core +2 more sources
Direct numerical simulation (DNS) investigation of turbulent open channel flow of a Herschel-Bulkley fluid [PDF]
Proceedings of the International Seminar on Paste and Thickened Tailings, 2011 In this research, the turbulent behaviour of non-Newtonian suspensions in open channel conditions will be examined and investigated. With lack of fundamental understanding about the mechanisms involved about how turbulent flows of non-Newtonian fluid transport suspension particles, direct numerical simulation may come into the research as a useful ...
Raymond Guang +4 more
openaire +1 more source