Results 101 to 110 of about 58,998 (325)
Navier-Stokes turbine heat transfer predictions using two-equation turbulence [PDF]
Navier-Stokes calculations were carried out in order to predict the heat transfer rates on turbine blades. The calculations were performed using TRAF2D which is a two-dimensional, explicit, finite volume mass-averaged Navier-Stokes solver. Turbulence was
Ameri, Ali A., Arnone, Andrea
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Numerical Simulation of magnetized jet creation using a hollow ring of laser beams
, 2018 Three dimensional FLASH magneto-hydrodynamics(MHD) modeling is carried out to interpret the OMEGA laser experiments of strongly magnetized, highly collimated jets driven by a ring of 20 OMEGA beams.
Birkel, A. +13 more
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International Journal for Numerical Methods in Fluids, EarlyView.A hybrid RANS‐LES turbulence model adapted for the Moving Particle Semi‐implicit method is employed to investigate a turbulent free surface flow. A method based on the cell‐linked list is proposed to speed up the nearest wall search for the turbulence model.
Fabio Kenji Motezuki +3 more
wiley +1 more source
Journal of Applied Fluid Mechanics, 2016 The interplay between stratification and shear in lakes controls the vertical mixing, which is the most important mechanism affecting the transport of heat, salt, momentum and suspended and dissolved substances.
Sebnem Elci, Huseyin Burak Ekmekçi
doaj
Journal of Marine Science and EngineeringThe k-omega SST turbulence model is extensively employed in Reynolds-averaged Navier–Stokes (RANS)-based Computational Fluid Dynamics (CFD) calculations.
Satoshi Matsuda, Tokihiro Katsui
doaj +1 more source
An algebraic transition model combined with the k-ω RANS model for turbomachinery use
, 2016 The functioning of a recently developed algebraic model for laminar to turbulent boundary layer transition under high free-stream turbulence is illustrated. The model uses only local variables and is tuned for turbomachinery flows.
Dick, Erik, Kubacki, Slawomir
core
International Journal for Numerical Methods in Fluids, EarlyView.This study investigates the impact of uncertain parameters on Navier–Stokes equations coupled with heat transfer using the Intrusive Polynomial Chaos Method (IPCM). Sensitivity equations are formulated for key input parameters, such as viscosity and thermal diffusivity, and solved numerically using the Finite Element‐Volume method.
N. Nouaime +3 more
wiley +1 more source
Turbulence and transition modeling for high-speed flows [PDF]
Research conducted during the past three and a half years aimed at developing and testing a turbulence/transition model applicable to high-speed turbulent flows is summarized.
Wilcox, David C.
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A Fuzzy Framework for Realized Volatility Prediction: Empirical Evidence From Equity Markets
Journal of Forecasting, EarlyView.ABSTRACT This study introduces a realized volatility fuzzy time series (RV‐FTS) model that applies a fuzzy c‐means clustering algorithm to estimate time‐varying c$$ c $$ latent volatility states and their corresponding membership degrees. These memberships are used to construct a fuzzified volatility estimate as a weighted average of cluster centroids.
Shafqat Iqbal, Štefan Lyócsa
wiley +1 more source
Assessment of closure coefficients for compressible-flow turbulence models [PDF]
A critical assessment is made of the closure coefficients used for turbulence length scale in existing models of the transport equation, with reference to the extension of these models to compressible flow.
Bradshaw, P. +2 more
core +1 more source