Results 21 to 30 of about 11,368 (115)

Finite-temperature effects in helical quantum turbulence [PDF]

, 2018
We perform a study of the evolution of helical quantum turbulence at different temperatures by solving numerically the Gross-Pitaevskii and the stochastic Ginzburg-Landau equations, using up to 40963 grid points with a pseudospectral method. We show that
Brachet, Marc E., Clark Di Leoni, Patricio, Mininni, Pablo Daniel   +2 more
core   +1 more source

Distribution, Formation, and Evolution of Subsurface Secondary Acoustic Ducts From Global Ocean Modeling and Observations

Journal of Geophysical Research: Oceans, Volume 131, Issue 4, April 2026.
Abstract Monthly mean reanalysis from assimilating global ocean circulation models spanning 27 years is used to study subsurface secondary acoustic ducts, which provide waveguides for the transmission of mid‐frequency sound. A systematic diagnosis of secondary ducts from monthly mean temperature and salinity fields characterizes their distribution and ...
K. Ravi Prakash, Ramsey R. Harcourt, John B. Mickett, Guangyu Xu, LuAnne Thompson   +4 more
wiley   +1 more source

Structure and stability of the compressible Stuart vortex [PDF]

, 2003
The structure and two- and three-dimensional stability properties of a linear array of compressible Stuart vortices (CSV; Stuart 1967; Meiron et al. 2000) are investigated both analytically and numerically. The CSV is a family of steady, homentropic, two-
O'Reilly, G., Pullin, D. I.
core  

Interaction of Ocean Currents and Seamounts: Near‐Bottom Dynamics Around Atlantis II

Journal of Geophysical Research: Oceans, Volume 131, Issue 3, March 2026.
Abstract This work investigates through a modeling exercise the interaction of a strong, surface current with isolated seamounts, focusing on the Gulf Stream and Atlantis II, one of the New England Seamounts. The roles of bathymetric details and model resolution are investigated with three simulations that consider realistic realizations of the ...
Pratik P. Aghor, Matthew McKinley, Annalisa Bracco   +2 more
wiley   +1 more source

Viscous-Inviscid Interactions in a Boundary-Layer Flow Induced by a Vortex Array

, 2014
In this paper we investigate the asymptotic validity of boundary layer theory. For a flow induced by a periodic row of point-vortices, we compare Prandtl's solution to Navier-Stokes solutions at different $Re$ numbers.
A. Obabko, C. Klein, C. Sulem, D. Gerard-Varet, D. Gerard-Varet, D. Iftimie, F. Gargano, F. Gargano, F. Gargano, Francesco Gargano, G. Coclite, G. Della Rocca, H. Beirão da Veiga, H. Beirão da Veiga, H. Beirão da Veiga, H. Lamb, I. Kukavica, J. Kelliher, J. Kelliher, J. Weideman, K. Cassel, K. Cassel, Kevin Cassel, L. Dommelen van, L. Whang, M. Cannone, M. Cannone, M. Lombardo, M. Lombardo, M. Lopes Filho, M. Lopes Filho, M. Lopes Filho, M. Sammartino, M. Sammartino, Marco Sammartino, N. Masmoudi, P. Orlandi, R. Caflisch, R. Peyret, R. Temam, T. Clopeau, T. Kato, V. Peridier, Vincenzo Sciacca, W. Kramer, W. Pauls, Y. Maekawa, Z. Xin   +47 more
core   +1 more source

Surrogate Quantum Circuit Design for the Lattice Boltzmann Collision Operator

International Journal for Numerical Methods in Engineering, Volume 127, Issue 4, 28 February 2026.
ABSTRACT This study introduces a framework for learning a low‐depth surrogate quantum circuit (SQC) that approximates the nonlinear, dissipative, and hence non‐unitary Bhatnagar–Gross–Krook (BGK) collision operator in the lattice Boltzmann method (LBM) for the D2Q9$$ {D}_2{Q}_9 $$ lattice.
Monica Lăcătuş, Matthias Möller
wiley   +1 more source

A Jacobian‐Free Newton‐Krylov Method for Cell‐Centred Finite Volume Solid Mechanics

International Journal for Numerical Methods in Engineering, Volume 127, Issue 3, 15 February 2026.
ABSTRACT This study proposes a Jacobian‐free Newton‐Krylov approach for finite‐volume solid mechanics. Traditional Newton‐based approaches require explicit Jacobian matrix formation and storage, which can be computationally expensive and memory‐intensive.
Philip Cardiff, Dylan Armfield, Željko Tuković, Ivan Batistić   +3 more
wiley   +1 more source

Shrouded Wind and Water Turbine Analytical Model Extensions for Tip Gaps, Center Bodies, and Flow Blockage

Wind Energy, Volume 29, Issue 2, February 2026.
ABSTRACT This paper provides improvements to a previously presented simple, accurate, lower order analytical model for predicting the performance of horizontal‐axis shrouded turbines for a wide range of shroud airfoil shapes varying in length, camber, and thickness. The new, extended model incorporates explicit quantitative predictions of those effects
M. J. Werle
wiley   +1 more source

A Pull‐Out Mooring Wave Energy Converter: Design, Analysis, and Application

Advanced Science, Volume 13, Issue 4, 19 January 2026.
A pull‐out mooring wave energy converter (POM‐WEC) with a high‐performance electromagnetic power take‐off system efficiently converts low‐frequency wave excitation into high‐speed rotor motion, enabling reliable energy harvesting in real marine environments.
Weihan Xu, Junru Chen, Shanghao Gu, Xingya Feng, Fei Wang   +4 more
wiley   +1 more source

Vortex Line Density in a Superfluid Turbulent Wake in the Zero Temperature Limit

Annalen der Physik, Volume 538, Issue 1, January 2026.
The quasiclassical conjecture for quantum turbulence in a pure superfluid straightforwardly leads to the definition of the superfluid Reynolds number, Res=ud/κ$Re_s=ud/\kappa$, and suggests that the effective quantum viscosity should be of the order of the circulation quantum κ$\kappa$.
Hiromitsu Takeuchi
wiley   +1 more source