نتایج جستجو برای: reynolds stress tensor

تعداد نتایج: 492601  

Journal: :Proceedings of the International Astronomical Union 2006

Journal: :Journal of physics 2023

Abstract This paper presents numerical simulations of incident oblique shock wave impinging on a flat plate with turbulent boundary layer using nonlinear anisotropic turbulence model. Three cases different angles under the same free-stream Mach number are studied, including attachment flow, incipient separation flow and outstanding flows. Convection terms diffusion calculated third-order Roe’s ...

2008
M. Rempel

We present a simple model for the solar differential rotation and meridional circulation based on a mean field parameterization of the Reynolds stresses that drive the differential rotation. We include the subadiabatic part of the tachocline and show that this, in conjunction with turbulent heat conductivity within the convection zone and overshoot region, provides the key physics to break the ...

2018
Chih-Wei Chang

Deep learning (DL)-based Reynolds stress with its capability to leverage values of large data can be used to close Reynolds-averaged Navier-Stoke (RANS) equations. Type I and Type II machine learning (ML) frameworks are studied to investigate data and flow feature requirements while training DL-based Reynolds stress. The paper presents a method, flow features coverage mapping (FFCM), to quantif...

Copper films of 300 nm thickness deposited by planar magnetron sputtering on glass substrates, for substrate temperatures between 300 and 500 K, and deposition rate of 10 ?s?1. Microstructure of these films was obtained by X-ray diffraction, while the texture mode of diffractometer was used for stress measurement by the sin2? technique. The components of the stress tensor are obtained using mea...

R. Naghdabadi and A. Saeedi,

In this paper, an elastic constitutive model based on the Eulerian corotational rate of the logarithmic strain tensor is proposed. Using this model, the large deformation of a closed cycle containing tension, shear, compression and inverse shear is analyzed. Since the deformation path includes a closed cycle and the material is considered as an isotropic elastic material, the normal and shear c...

2016
Stanislav Gordeyev Adam E. Smith

Simultaneous velocity field and optical distortions along the wall-normal direction were performed in a subsonic boundary layer. Comparison between wavefronts and the ones predicted using instantaneous Strong Reynolds Analogy had shown that instantaneous SRA is valid most of the time. Conditional velocity analysis had shown that positive OPD distortions are created by predominantly ejection-typ...

2009
Simon F. Ross Omid Saremi

We discuss the calculation of the field theory stress tensor from the dual geometry for two recent proposals for gravity duals of non-relativistic conformal field theories. The first of these has a Schrödinger symmetry including Galilean boosts, while the second has just an anisotropic scale invariance (the Lifshitz case). For the Lifshitz case, we construct an appropriate action principle. We ...

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