Results 1 to 10 of about 14,104 (341)
Analysis of a turbulence model related to that of k-epsilon for stationary and compressible flows [PDF]
, 2010 We shall study a turbulence model arising in compressible fluid mechanics. The model called $\theta - \phi$ we study is closely related to the k-epsilon model.
Pierre Dreyfuss
core +7 more sources
New time scale based k-epsilon model for near-wall turbulence [PDF]
AIAA Journal, 1993 A k-epsilon model is proposed for wall bonded turbulent flows. In this model, the eddy viscosity is characterized by a turbulent velocity scale and a turbulent time scale. The time scale is bounded from below by the Kolmogorov time scale. The dissipation equation is reformulated using this time scale and no singularity exists at the wall.
Yang, Z., Shih, T. H.
openaire +2 more sources
An Improved K-Epsilon Model for Near-Wall Turbulence and Comparison with Direct Numerical Simulation [PDF]
, 1990 An improved k-epsilon model for low Reynolds number turbulence near a wall is presented. The near-wall asymptotic behavior of the eddy viscosity and the pressure transport term in the turbulent kinetic energy equation is analyzed. Based on this analysis,
Tsan-Hsing Shih
openalex +2 more sources
Revista Facultad de Ingeniería Universidad de Antioquia, 2017 The processing of natural gas requires the implementation of new technologies in a context of increasing demand around the world. The natural gas liquids (NGL) separation using supersonic devices is a novel and efficient way to reduce volume of ...
Marco Andrés Guevara-Luna +1 more
doaj +4 more sources
Modeling of k-.EPSILON. Turbulence Model by Statistical Turbulence Theory and its Applications.
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1991 A new near wall k-e model has been proposed, which includes the Prandtl number effect. Modeling was made from the statistical theory developed by A. Yoshizawa. The model was compatible with near wall limiting behavior for turbulent energy and Reynolds stress.
Masanori YAMAKAWA, Shinichi INAGE
openaire +3 more sources
EVALUATION OF K-EPSILON MODEL FOR TURBULENT BUOYANT JET
Platform, a Journal of Engineering, 2019 The modelling of a turbulent buoyant jet is challenging due to the complex nature of such flow, which consists of two fluids with different densities, as well as the multi-scale flow phenomena associated in both space and time.
Osman Abu Bakr Mohmmed Ahmed +1 more
doaj +2 more sources
Parabolic turbulence k-epsilon model with applications in fluid flows through permeable media [PDF]
Opuscula MathematicaIn this work, we study a one-equation turbulence \(k\)-epsilon model that governs fluid flows through permeable media. The model problem under consideration here is derived from the incompressible Navier-Stokes equations by the application of a time ...
Hermenegildo Borges de Oliveira
doaj +4 more sources
Journal of Fluid Science and TechnologyThe aim of this study is to investigate the effect of weak but prolonged mean flow accelerations, such as those observed in wind tunnel blockage acceleration, on free-stream turbulence.
Akira ONO +3 more
doaj +3 more sources
An improved k-epsilon model for near wall turbulence [PDF]
, 1991 An improved k-epsilon model for low Reynolds number turbulence near a wall is presented. In the first part of this work, the near-wall asymptotic behavior of the eddy viscosity and the pressure transport term in the turbulent kinetic energy equation are ...
Tsan-Hsing Shih, Andrew Hsu
openalex +2 more sources
The k-epsilon model in the theory of turbulence [PDF]
, 2005 We consider the $k-varepsilon$ model in the theory of turbulence, where $k$ is the turbulent kinetic energy, $varepsilon$ is thedissipation rate of the turbulent energy, and $alpha,$ $eta,$ and $gamma$ are positive constants. In particular we examine the
Colleen Dawn Scott-Pomerantz
openalex +2 more sources