Results 271 to 280 of about 95,386 (312)

Direct Numerical Simulation of Detonation

AIP Conference Proceedings, 2006
The last decade has been witness to a thousand fold gain in computational power, in addition to comparable gains from improved computational algorithms such as adaptive mesh algorithms (AMR). But, even with these gains, there are many detonation phenomena which are beyond the current and foreseeable capabilities of direct simulation of resolved ...
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Numerical simulation of quantum directional couplers

Applied Physics A: Materials Science & Processing, 1997
A numerical analysis of a quantum directional coupler based on Π-shaped electron waveguides is presented with use of the scattering-matrix method. After the optimization of the device parameters, uniform output for the two output ports and high directivity are obtained within a wide range of the electron momenta.
Wei-Dong Sheng, Jian-Bai Xia
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Direct numerical simulation of spiral turbulence

Journal of Fluid Mechanics, 2010
In this paper, we present results of three-dimensional direct numerical simulations of the spiral turbulence phenomenon in a range of moderate Reynolds numbers, in which alternating intertwined helical bands of turbulent and laminar fluids co-exist and propagate between two counter-rotating concentric cylinders.
Dong, S., Zheng, X.
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Direct Numerical Simulations of Nucleate Boiling

Volume 10: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B, and C, 2008
Direct Numerical Simulations (DNS) of multiphase flows, where all continuum length and time scales are fully resolved have progressed enormously in the last few years. Increases in computer power and new algorithms now make it possible to follow the unsteady motion of several hundred particles (drops, bubbles and solids) for long enough times so that ...
Gretar Tryggvason, Siju Thomas, Jiacai Lu   +2 more
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On Direct Numerical Simulation of Turbulent Flows

Applied Mechanics Reviews, 2011
The direct numerical simulation of turbulence (DNS) has become a method of outmost importance for the investigation of turbulence physics, and its relevance is constantly growing due to the increasing popularity of high-performance-computing techniques.
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Direct numerical simulation of bifurcating jets

Physics of Fluids, 2000
The mechanisms leading to bifurcating jets are investigated by means of direct numerical simulation. Two distinct types of jets were obtained by applying a bi-modal perturbation at the nozzle. When forcing simultaneously the counter-rotating helical modes (flapping mode) with the same amplitude and the same frequency, the jet splits into two branches ...
Danaila, Ionut, Boersma, Bendiks Jan
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Direct Numerical Simulations of Bubbly Flows

2007
The status of direct numerical simulations of bubbly flows is reviewd and a few recent results are presented. The development of numerical methods based on the one-field formulation has made it possible to follow the evolution of a large number of bubbles for a sufficiently long time so that converged statistics for the averaged properties of the flow ...
Gretar Tryggvason, Jiacai Lu, Souvik Biswas, Asghar Esmaeeli   +3 more
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Direct Numerical Simulation and Large Eddy Simulation

2010
This chapter presents important issues that one needs to consider in order to perform direct numerical simulation (DNS) and large eddy simulation (LES) of turbulent flows. We also present important similarities and differences between DNS and LES.
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Radiation therapy‐associated toxicity: Etiology, management, and prevention

Ca-A Cancer Journal for Clinicians, 2021
Kyle Wang
exaly  

Direct Numerical Simulation

2022
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