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Kriging interpolating cosmic velocity field [PDF]

open access: yesPhysical Review D, 2015
[abridged] Volume-weighted statistics of large scale peculiar velocity is preferred by peculiar velocity cosmology, since it is free of uncertainties of galaxy density bias entangled in mass-weighted statistics. However, measuring the volume-weighted velocity statistics from galaxy (halo/simulation particle) velocity data is challenging.
Yu, Yu   +3 more
openaire   +3 more sources

Mapping Small-Scale Horizontal Velocity Field in Panzhinan Waterway by Coastal Acoustic Tomography [PDF]

open access: yesSensors, 2020
Mapping small-scale high-precision velocity fields is of great significance to oceanic environment research. Coastal acoustic tomography (CAT) is a frontier technology used to observe large-scale velocity field in the horizontal slice. Nonetheless, it is
Haocai Huang   +3 more
doaj   +2 more sources

MHD Oldroyd-B Fluid with Slip Condition in view of Local and ‎Nonlocal Kernels [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2021
We examine the velocity field of an incompressible Oldroyd-B fluid over a horizontal plate of continual length in a permeable medium with magnetohydrodynamics effect.
Muhammad Bilal Riaz   +3 more
doaj   +1 more source

A pre-training model based on CFD for open-channel velocity field prediction with small sample data

open access: yesJournal of Hydroinformatics, 2023
Accurately obtaining the distribution of the open-channel velocity field in hydraulic engineering is extremely important, which is helpful for better calculation of open-channel flow and analysis of open-channel water flow characteristics.
Ruixiang Lin, Xinzhi Zhou, Bo Li, Xin He
doaj   +1 more source

Three-Dimensional Mathematical Model of the Liquid Film Downflow on a Vertical Surface

open access: yesEnergies, 2020
Film downflow from captured liquid without wave formation and its destruction is one of the most important aspects in the development of separation equipment.
Ivan Pavlenko   +9 more
doaj   +1 more source

Deep Minima in the Triply Differential Cross Section for Ionization of Atomic Hydrogen by Electron and Positron Impact

open access: yesAtoms, 2020
We investigate ionization of atomic hydrogen by electron- and positron-impact. We apply the Coulomb–Born (CB1) approximation, various modified CB1 approximations, the three body distorted wave (3DW) approximation, and the time-dependent close-coupling ...
C. M. DeMars   +4 more
doaj   +1 more source

Digital models for retrospective analysis of the structure of currents in the Neva Bay

open access: yesMagazine of Civil Engineering, 2023
The Neva Bay is a body of water located between the delta of the Neva River and Kotlin Island. The goal of the study was to develop a method for numerical modeling of the shallow water equation in the Neva Bay, based on the finite element method.
Zotov Dmitry   +4 more
doaj   +1 more source

On the flow of MHD generalized maxwell fluid via porous rectangular duct

open access: yesOpen Physics, 2020
The purpose of this proposed investigation is to study unsteady magneto hydrodynamic (MHD) mixed initial-boundary value problem for incompressible fractional Maxwell fluid model via oscillatory porous rectangular duct.
Farooq Aamir   +5 more
doaj   +1 more source

Exact solutions for the unsteady rotational flow of a generalized second grade fluid through a circular cylinder

open access: yesNonlinear Analysis, 2010
Here the velocity field and the associated tangential stress corresponding to the rotational flow of a generalized second grade fluid within an infinite circular cylinder are determined by means of the Laplace and finite Hankel transforms.
M. Kamran, M. Imran, M. Athar
doaj   +1 more source

Experimental and Numerical Modeling of Open Channel Flow in Various Cross-Section

open access: yesGazi Üniversitesi Fen Bilimleri Dergisi, 2019
In this study, the flow that interacts with the trapezoidal head structure, which constitutes the narrowing and expansion section in the open channel, has been investigated experimentally and numerically.
Veysel GÜMÜŞ   +2 more
doaj   +1 more source

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