Results 11 to 20 of about 14,104 (341)

Finite element thermal hydraulic analysis using k-.EPSILON. turbulence model.

open access: bronzeJournal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan, 1989
Hiroshi OKUDA   +2 more
openaire   +3 more sources

Numerical Simulation of Cavitation Phenomenon in the Stepped Spillway with Fluent Software [PDF]

open access: yesپژوهش‌های زیرساخت‌های عمرانی, 2020
In the present research, the effects of different turbulence models and cavitation phenomenon in the stepped spillway of Siah Bisheh dam was investigated using the FLUENT model. Three standard K-Epsilon, Renormalization Group (RNG) K-Epsilon, and K-Omega
Farideh Karimi Pirmoosaei   +1 more
doaj   +1 more source

Analysis of Flow Characteristics and Effects of Turbulence Models for the Butterfly Valve

open access: yesApplied Sciences, 2021
In the present study, the flow characteristics of butterfly valves with different sizes DN 80 (nominal diameter: 76.2 mm), DN 262 (nominal diameter: 254 mm), DN 400 (nominal diameter: 406 mm) were numerically investigated under different valve opening ...
Sung-Woong Choi   +2 more
doaj   +1 more source

Near-wall k-epsilon turbulence modeling [PDF]

open access: yesAIAA Journal, 1989
The flow fields from a turbulent channel simulation are used to compute the budgets for the turbulent kinetic energy (k) and its dissipation rate (epsilon). Data from boundary layer simulations are used to analyze the dependence of the eddy-viscosity damping-function on the Reynolds number and the distance from the wall.
N. N. Mansour, J. Kim, P. Moin
openaire   +1 more source

A suitable k-epsilon model for CFD simulation of pump-around jet mixing tank with moderate jet reynolds number [PDF]

open access: yesMATEC Web of Conferences, 2018
This paper presents the appropriate turbulence model for predicting the overall mixing time inside an open 45° inclined side entry pump-around jet mixing tank with moderate jet Reynolds number of about 17,515.
Phapatarinan Satapan   +2 more
doaj   +1 more source

Analytical solution of the k-.EPSILON. turbulence model wih negligible wall stress.

open access: bronzeTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1990
Nobumasa TAKEMITSU
openaire   +3 more sources

Stirred tank simulation using Partially-Averaged Navier-Stokes $$k_u-\epsilon _u$$ k u - ϵ u turbulence model

open access: yesSN Applied Sciences, 2021
In the present study, simulation of a stirred tank using axial flow impeller has been studied numerically to see the behaviour of flow variables in the entire vessel.
Srimanta Maji, Akshaya K. Sahu
doaj   +1 more source

Study on Accuracy of CFD Simulations of Wind Environment around High-Rise Buildings: A Comparative Study of k-ε Turbulence Models Based on Polyhedral Meshes and Wind Tunnel Experiments

open access: yesApplied Sciences, 2022
It is important to create a comfortable wind environment around high-rise buildings for outdoor activities. To predict the wind environment, Computational Fluid Dynamics (CFD) has been widely used by designers and engineers.
Minghui Xiong   +3 more
doaj   +1 more source

Optimal Modeling Study of Flooding Phenomenon in Urban Area (Dam break case) [PDF]

open access: yesInternational Journal for Simulation and Multidisciplinary Design Optimization, 2010
In this paper a numerical study of urban flooding caused by dam break has been undertaken. Problem statement: This study illustrated the influence of the different versions of K-epsilon turbulence model on the water flow behavior, predicted by ...
Rezoug M.   +5 more
doaj   +1 more source

Actuator Disc Approach of Wind Turbine Wake Simulation Considering Balance of Turbulence Kinetic Energy

open access: yesEnergies, 2018
The operation of the wind turbines downstream is affected by the wake of the wind turbines upstream. Wind turbine wake flow is investigated by applying the actuator disc (AD) method. The modified k-ε turbulence model is proposed by using both the
Huilai Ren   +3 more
doaj   +1 more source

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