Results 21 to 30 of about 461,621 (293)

Nonlinear AVA Inversion Based on a Novel Quadratic Approximation for Fluid Discrimination

open access: yesGeofluids, 2020
Fluid discrimination plays an important role in reservoir exploration and development. At present, the fluid factors used for fluid discrimination are estimated by linear AVA inversion methods based on the linear approximations of the Zoeppritz equations.
Lin Zhou   +5 more
doaj   +1 more source

The standard mean-field treatment of inter-particle attraction in classical DFT is better than one might expect [PDF]

open access: yes, 2017
In classical density functional theory (DFT) the part of the Helmholtz free energy functional arising from attractive inter-particle interactions is often treated in a mean-field or van der Waals approximation. On the face of it, this is a somewhat crude
Andrew J. Archer   +4 more
core   +2 more sources

A sharp interface direct-forcing immersed boundary method using the moving least square approximation

open access: yesJournal of Fluid Science and Technology, 2021
Based on the Moving Least Square (MLS) approximation, we propose a sharp interface direct-forcing immersed boundary method for incompressible fluid flows with fixed and moving boundaries.
Mehdi BADRI GHOMIZAD   +2 more
doaj   +1 more source

High order fluid model for streamer discharges. II. Numerical solution and investigation of planar fronts [PDF]

open access: yes, 2013
The high order fluid model developed in the preceding paper is employed here to study the propagation of negative planar streamer fronts in pure nitrogen.
Dujko, S., Ebert, U., Markosyan, A. H.
core   +3 more sources

Quasi-geostrophic approximation of anelastic convection [PDF]

open access: yes, 2014
The onset of convection in a rotating cylindrical annulus with parallel ends filled with a compressible fluid is studied in the anelastic approximation. Thermal Rossby waves propagating in the azimuthal direction are found as solutions.
Busse, Friedrich H.   +1 more
core   +2 more sources

A Posteriori Error Estimates for a Nonconforming Finite Element Discretization of the Stokes–Biot System

open access: yesDiscrete Dynamics in Nature and Society, 2022
This paper presents an a posteriori error estimator for a (piecewise linear) nonconforming finite element approximation of the problem defining the interaction between a free fluid and poroelastic structure.
Koffi Wilfrid Houédanou
doaj   +1 more source

Fluid passage-time calculation in large Markov models [PDF]

open access: yes, 2009
Recent developments in the analysis of large Markov models facilitate the fast approximation of transient characteristics of the underlying stochastic process.
Bradley, J, Hayden, R
core   +1 more source

Weighted-density approximation for general nonuniform fluid mixtures [PDF]

open access: yes, 1999
In order to construct a general density-functional theory for nonuniform fluid mixtures, we propose an extension to multicomponent systems of the weighted-density approximation (WDA) of Curtin and Ashcroft [Phys. Rev. A 32, 2909 (1985)].
A. R. Denton   +16 more
core   +2 more sources

Fluid and diffusion approximations of probabilistic matching systems [PDF]

open access: yesQueueing Systems, 2017
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Büke, Burak, Chen, Hanyi
openaire   +3 more sources

Inversion for Geofluid Discrimination Based on Poroelasticity and AVO Inversion

open access: yesGeofluids, 2019
Geofluid discrimination plays an important role in reservoir characterization and prospect identification. Compared with other fluid indicators, the effective pore-fluid bulk modulus is more sensitive to the property of fluid contained in reservoirs.
Lingqian Wang   +5 more
doaj   +1 more source

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