Results 21 to 30 of about 71,643 (226)

Super rogue waves in simulations based on weakly nonlinear and fully nonlinear hydrodynamic equations [PDF]

open access: yes, 2013
The rogue wave solutions (rational multi-breathers) of the nonlinear Schrodinger equation (NLS) are tested in numerical simulations of weakly nonlinear and fully nonlinear hydrodynamic equations. Only the lowest order solutions from 1 to 5 are considered.
Akhmediev, N.   +6 more
core   +3 more sources

The main geodynamic border and seismic visualization of plumes under the East European Platform

open access: yesГеофизический журнал, 2019
According to the Taylor approximation method of the three-dimensional P-velocity mantle model under Eurasia, a seismic imaging of the manifold plumes and super-deep fluid processes of the East European Platform was carried out.
T. Tsvetkova   +2 more
doaj   +1 more source

Cosmic microwave background bispectrum on small angular scales [PDF]

open access: yes, 2008
This article investigates the non-linear evolution of cosmological perturbations on sub-Hubble scales in order to evaluate the unavoidable deviations from Gaussianity that arise from the non-linear dynamics.
Bernardeau, Francis   +2 more
core   +2 more sources

Deep Fluids: A Generative Network for Parameterized Fluid Simulations

open access: yes, 2018
This paper presents a novel generative model to synthesize fluid simulations from a set of reduced parameters. A convolutional neural network is trained on a collection of discrete, parameterizable fluid simulation velocity fields.
Azevedo, Vinicius C.   +5 more
core   +1 more source

Experimental Study of Matrix Permeability of Gas Shale: An Application to CO2-Based Shale Fracturing

open access: yesEnergies, 2018
Because the limitations of water-based fracturing fluids restrict their fracturing efficiency and scope of application, liquid CO2 is regarded as a promising substitute, owing to its unique characteristics, including its greater environmental ...
Chengpeng Zhang   +1 more
doaj   +1 more source

Laminar-Turbulent Patterning in Transitional Flows

open access: yes, 2017
Wall-bounded flows experience a transition to turbulence characterized by the coexistence of laminar and turbulent domains in some range of Reynolds number R, the natural control parameter.
Manneville, Paul
core   +1 more source

MeshfreeFlowNet: A Physics-Constrained Deep Continuous Space-Time Super-Resolution Framework [PDF]

open access: yes, 2020
We propose MeshfreeFlowNet, a novel deep learning-based super-resolution framework to generate continuous (grid-free) spatio-temporal solutions from the low-resolution inputs. While being computationally efficient, MeshfreeFlowNet accurately recovers the
Anandkumar, Anima   +8 more
core   +2 more sources

Primordial magnetic fields from self-ordering scalar fields

open access: yes, 2015
A symmetry-breaking phase transition in the early universe could have led to the formation of cosmic defects. Because these defects dynamically excite not only scalar and tensor type cosmological perturbations but also vector type ones, they may serve as
Horiguchi, Kouichirou   +3 more
core   +1 more source

Time-Reversal of Nonlinear Waves - Applicability and Limitations [PDF]

open access: yes, 2016
Time-reversal (TR) refocusing of waves is one of fundamental principles in wave physics. Using the TR approach, "Time-reversal mirrors" can physically create a time-reversed wave that exactly refocus back, in space and time, to its original source ...
Chabchoub, A., Ducrozet, G., Fink, M.
core   +5 more sources

Development and evaluation of foam-based conformance control for a high-salinity and high-temperature carbonate

open access: yesJournal of Petroleum Exploration and Production Technology, 2018
The extreme heterogeneity of carbonate reservoirs in the form of fracture corridors and super-permeability thief zones present challenges to the efficient sweep of oil in both secondary and tertiary recovery operations.
Alhasan B. Fuseni   +3 more
doaj   +1 more source

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