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Oil recovery by ionic surfactant and sweep efficiency study in sandstones
(Associação Brasileira de Pesquisa e Desenvolvimento em Petróleo e Gás, 2008)
In this work, we have investigated the oil recovery performance, adsorption, sweep and displacement efficiency by ionic surfactants. In the adsorption and recovery assays, a surfactant aqueous solution at a concentration ...
Microemulsion flow in porous medium for enhanced oil recovery
(2013)
Injection of microemulsion is a chemical technique of enhanced petroleum recovery. With the implementation of this technique, oil recovery is enhanced by increasing the viscosity of the microemulsion systems, and reducing ...
Analysis of elastic functionally graded materials under large displacements via high-order tetrahedral elements
(ELSEVIER SCIENCE BVAMSTERDAM, 2013-08-02)
The purpose of this study is to present a position based tetrahedral finite element method of any order to accurately predict the mechanical behavior of solids constituted by functionally graded elastic materials and ...
Nano-displacement measurements of a new piezoelectric flextensional actuator by using a high dynamic range interferometry homodyne method
(IEEE, 2014-05-12)
Piezoelectric flextensional actuator (PFA) devices consist in a technology in development, with increasing number of applications in precision mechanics such as nanotechnology equipments, electronic microscopy instruments, ...
Displacement thickness evaluation for semi-empirical airfoil trailing-edge noise prediction model
(Springer, 2016-02-01)
This study proposes a criterion for evaluating the turbulent boundary layer displacement thickness when predicting airfoil trailing-edge noise with semi-empirical methods. The boundary layer integral parameter is usually ...
Formulation of solid-shell finite elements with large displacements considering different transverse shear strains approximations
(Elsevier Science, 2017-08)
This work presents a general formulation and implementation in solid-shell elements of the refined zigzag theory and the trigonometric shear deformation theory in an unified way. The model thus conceived is aimed for use ...