Results 21 to 30 of about 35,367 (244)

Modelling the Wake Flow Behind a Model of Horizontal Axis Wind Turbine using RANS Approach: A Comparative Study [PDF]

open access: yesJournal of Engineering Research - Egypt, 2020
Steady CFD simulations, which is based on Reynolds Average Navier-Stokes (RANS) approach, were conducted for a model of Horizontal Axis Wind Turbine (HAWT) and compared with experimental data in order to assess the accuracy of these models in simulating ...
Abd Elnaby Kabeel   +3 more
doaj   +1 more source

Three-dimensional numerical analysis of a dam-break using OpenFOAM

open access: yesТруды Института системного программирования РАН, 2018
This paper presents a 3D numerical analysis of flow field patterns in a dam break laboratory scale by applying the numerical code based on Finite Volume Method (FVM), OpenFOAM.
E. Sánchez-Cordero   +2 more
doaj   +1 more source

Revisiting the Reynolds-averaged Navier–Stokes equations

open access: yesOpen Physics, 2022
This study revisits the Reynolds-averaged Navier–Stokes (RANS) equations and finds that the existing literature is erroneous regarding the primary unknowns and the number of independent unknowns in the RANS. The literature claims that the Reynolds stress
Sun Bohua
doaj   +1 more source

Physical and numerical modeling for the investigation of downstream scour caused by sudden blockage in circular and box culvert inlets [PDF]

open access: yesJournal of Applied Research in Water and Wastewater
This paper presents a comprehensive experimental and numerical study using non-cohesive uniform sand (d50 = 2 mm). The study investigates the impact of local scour downstream of four model culverts with different barrel shapes and inlet blockage sizes ...
Saeed Gohari, Somayeh Karimpour
doaj   +1 more source

Análisis numérico 3D de las características del flujo en un canal curvo

open access: yesIngeniería del Agua, 2020
El presente trabajo muestra un análisis numérico 3D del comportamiento del flujo de agua en un canal curvo influenciado por la presencia de un vertedero y una compuerta.
E. Sánchez-Cordero   +2 more
doaj   +1 more source

Comparison of Different Turbulent Models in Flow on a Rotating Airfoil Considering Centrifugal Acceleration Force, Coriolis Force and Thermal Dissipation [PDF]

open access: yesJournal of Heat and Mass Transfer Research
The moving blades in a circular path have many industrial applications, in more modern turbo machines, such as jet engine compressors, the flow conditions are completely incompressible.
Iraj Fazeli Farsani, Bahman Asadi
doaj   +1 more source

A New Scientific Paradigm as a key to Building a Community with a Common Future for Humanity

open access: yesCadmus, 2020
The major idea of this article is that for a scientifically based understanding of possible future for humanity we need a new knowledge of regularities for its development.
Valentina M. Bondarenko
doaj  

NUMERICAL STUDY ON PROPULSIVE FACTORS IN REGULAR HEAD AND OBLIQUE WAVES

open access: yesBrodogradnja, 2022
This paper applies Reynolds-averaged Navier-Stokes (RANS) method to study propulsion performance in head and oblique waves. Finite volume method (FVM) is employed to discretize the governing equations and SST k-ω model is used for modeling the turbulent ...
Kun Dai   +5 more
doaj   +1 more source

Comparative Evaluation of Hemodiafiltration, Hemoperfusion, and Standard Hemodialysis on Efficacy, Inflammatory Control, Dialysis Adequacy, and Safety in End‐Stage Renal Disease: A Prospective Observational Study

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Chronic micro‐inflammation in patients with end‐stage renal disease (ESRD) is a significant driver of cardiovascular complications and diminished quality of life. While standard hemodialysis (SHD) effectively manages small‐molecule clearance, its ability to remove medium‐to‐large uremic toxins—the primary catalysts of systemic ...
Hongwei Zuo   +5 more
wiley   +1 more source

Automatic Transition Prediction and Application to High-Lift Multi-Element Configurations [PDF]

open access: yes, 2004
A Reynolds-averaged Navier-Stokes (RANS) solver, a laminar boundary layer code and an e(N)-database method for transition prediction were coupled in order to perform RANS computations of two-dimensional high-lift multi-element systems with automatic ...
Krumbein, Andreas   +2 more
core   +1 more source

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