Results 21 to 30 of about 1,811,844 (252)

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

Optimization using surrogate models and partially converged computational fluid dynamics simulations [PDF]

open access: yes, 2006
Efficient methods for global aerodynamic optimization using computational fluid dynamics simulations should aim to reduce both the time taken to evaluate design concepts and the number of evaluations needed for optimization.
Alexander I.J. Forrester   +5 more
core   +1 more source

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

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   +4 more sources

Ellipsoidal vortices in rotating stratified fluids : beyond the quasi-geostrophic approximation [PDF]

open access: yes, 2015
Support for this research has come from the UK Engineering and Physical Sciences Research Council (grant number EP/H001794/1).We examine the basic properties and stability of isolated vortices having uniform potential vorticity (PV) in a non-hydrostatic ...
Dritschel, David G.   +2 more
core   +1 more source

Exact controllability of Galerkin’s approximations of micropolar fluids [PDF]

open access: yesProceedings of the American Mathematical Society, 2009
We consider the nonlinear model describing micropolar fluid in a bounded smooth region of R
Araruna, F. D.   +2 more
openaire   +4 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

Thermodynamic Properties of the Parabolic-Well Fluid

open access: yesFrontiers in Physics, 2021
The thermodynamic properties of the parabolic-well fluid are considered. The intermolecular interaction potential of this model, which belongs to the class of the so-called van Hove potentials, shares with the square-well and the triangular well ...
Mariano López de Haro   +1 more
doaj   +1 more source

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

On the Holographic Bound in Newtonian Cosmology

open access: yesEntropy, 2018
The holographic principle sets an upper bound on the total (Boltzmann) entropy content of the Universe at around 10 123 k B ( k B being Boltzmann’s constant).
José M. Isidro   +1 more
doaj   +1 more source

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