Results 51 to 60 of about 25,672 (196)

Periodic magnetorotational dynamo action as a prototype of nonlinear magnetic field generation in shear flows [PDF]

, 2011
The nature of dynamo action in shear flows prone to magnetohydrodynamic instabilities is investigated using the magnetorotational dynamo in Keplerian shear flow as a prototype problem. Using direct numerical simulations and Newton's method, we compute an
C. Cossu, C. Terquem, F. Rincon, G. I. Ogilvie, G. I. Ogilvie, G. Lesur, H. K. Moffatt, J. Herault, Lord Kelvin (W. Thomson), P. Goldreich, P.-Y. Longaretti, W. M. Orr   +11 more
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Large eddy simulations and direct numerical simulations of high speed turbulent reacting flows [PDF]

This research is involved with the implementations of advanced computational schemes based on large eddy simulations (LES) and direct numerical simulations (DNS) to study the phenomenon of mixing and its coupling with chemical reactions in compressible ...
Givi, Peyman, Madnia, C. K., Steinberger, C. J., Tsai, A.   +3 more
core   +4 more sources

Direct numerical simulation of turbulent channel flow up to $Re_\tau \approx 5200$

, 2015
A direct numerical simulation of incompressible channel flow at $Re_\tau$ = 5186 has been performed, and the flow exhibits a number of the characteristics of high Reynolds number wall-bounded turbulent flows. For example, a region where the mean velocity
Lee, Myoungkyu, Moser, Robert D.
core   +1 more source

Lattice Boltzmann method for direct numerical simulation of turbulent flows

, 2010
We present three-dimensional numerical simulations (DNS) of the Kida vortex flow, a prototypical turbulent flow, using a novel high-order lattice Boltzmann model.
Boulouchos, K.B., Chikatamarla, S.S., Frouzakis, C.E., Karlin, I.V., Tomboulides, A.G.   +4 more
core   +1 more source

Three regularization models of the Navier-Stokes equations [PDF]

, 2008
We determine how the differences in the treatment of the subfilter-scale physics affect the properties of the flow for three closely related regularizations of Navier-Stokes.
Annick Pouquet, Brachet M., Cao C., Darryl D. Holm, Foias C., Frisch U., Geurts B. J., Geurts B. J., Geurts B. J., Jonathan Pietarila Graham, Kolmogorov A. N., Leonard A., Pablo D. Mininni, Sagaut P.   +13 more
core   +4 more sources

SIMULATION OF TURBULENT FLOW OVER A BACKWARD FACING STEP USING LATTICE BOLTZMANN METHOD [PDF]

Journal of Engineering Science and Technology, 2013
The lattice Boltzmann scheme for solving the equations governing the flow of fluids has become increasingly popular in recent years. In this method, a probability distribution function for the velocity of fluid elements is computed at each grid point ...
NOR AZWADI C. SIDIK, JAVAD GHADERIAN, SAKINEH SADEGHIPOUR   +2 more
doaj  

Lattice Boltzmann method for direct numerical simulation of turbulent flows [PDF]

, 2017
We present three-dimensional direct numerical simulations (DNS) of the Kida vortex flow, a prototypical turbulent flow, using a novel high-order lattice Boltzmann (LB) model.
BOULOUCHOS, K. B., CHIKATAMARLA, S. S., FROUZAKIS, C. E., KARLIN, I. V., TOMBOULIDES, A. G.   +4 more
core  

Direct simulations and modelling of basic three-dimensional bifurcating tube flows [PDF]

, 2004
Three-dimensional bifurcating internal flow is studied for a single mother tube branching into two equal but diverging daughter tubes. The mother tube is straight and of circular cross-section, containing a fully developed incident motion, while the ...
Smith, FT, Tadjfar, M
core   +1 more source

On the Fidelity of RANS-Based Turbulence Models in Modeling the Laminar Separation Bubble and Ice-Induced Separation Bubble at Low Reynolds Numbers on Unmanned Aerial Vehicle Airfoil

Drones
The operational regime of Unmanned Aerial Vehicles (UAVs) is distinguished by the dominance of laminar flow and the flow field is characterized by the appearance of Laminar Separation Bubbles (LSBs). Ice accretion on the leading side of the airfoil leads
Manaf Muhammed, Muhammad Shakeel Virk
doaj   +1 more source

Large Eddy Simulations (LES) and Direct Numerical Simulations (DNS) for the computational analyses of high speed reacting flows [PDF]

The principal objective is to extend the boundaries within which large eddy simulations (LES) and direct numerical simulations (DNS) can be applied in computational analyses of high speed reacting flows. A summary of work accomplished during the last six
Frankel, S. H., Givi, Peyman, Madnia, Cyrus K., Steinberger, C. J.   +3 more
core   +1 more source