نتایج جستجو برای: nonlinear viscoelastic fluid

تعداد نتایج: 443326  

This communication influences on magnetohydrodynamic flow of viscoelastic fluid with magnetic field induced by oscillating plate. General solutions have been found out for velocity and shear stress profiles using mathematical transformations (Integral transforms). The governing partial differential equations have been solved analytically under boundary conditions u(0,t)=A_0 H(t)sinΩt and u(0,t)...

2010
Jovani L. Favero Nilo S. M. Cardozo Argimiro R. Secchi Hrvoje Jasak

The understanding of polymeric fluids flows is of essential importance for several industry sectors, including plastic and food processing industries. The rheological response of viscoelastic fluids is quite complex, including combination of viscous and elastic effects and highly non-linear viscous and elastic phenomena. In a previous work we presented a solver for internal viscoelastic fluid f...

2011
Boris Gurevich

Recently, Hashin-Shtrikman bounds for bulk and shear moduli of elastic composites have been extended to the moduli of composite viscoelastic media. Since viscoelastic moduli are complex, the viscoelastic bounds form a closed curve on a complex plane. We apply these general viscoelastic bounds to a particular case of a porous solid saturated with a Newtonian fluid. Our analysis shows that for po...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2011
Bin Liu Thomas R Powers Kenneth S Breuer

We precisely measure the force-free swimming speed of a rotating helix in viscous and viscoelastic fluids. The fluids are highly viscous to replicate the low Reynolds number environment of microorganisms. The helix, a macroscopic scale model for the bacterial flagellar filament, is rigid and rotated at a constant rate while simultaneously translated along its axis. By adjusting the translation ...

Journal: :Wave Motion 2022

The paper investigates waves generated by the moving loads on ice plates floating an incompressible fluid. Two different viscoelastic approximations are considered for cover: A model depending strain-relaxation time, and a including hereditary delay integral. problem is formulated in terms of exact dispersion relation Dirichlet–Neumann operator connected to fluid motion. Weakly nonlinear linear...

2014
Tasawar Hayat Muhammad Bilal Ashraf Hamed H. Alsulami Muhammad Shahab Alhuthali

The objective of present research is to examine the thermal radiation effect in three-dimensional mixed convection flow of viscoelastic fluid. The boundary layer analysis has been discussed for flow by an exponentially stretching surface with convective conditions. The resulting partial differential equations are reduced into a system of nonlinear ordinary differential equations using appropria...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2011
Brian A Camley Frank L H Brown

Recent experiments suggest that lipid bilayer membranes may be viscoelastic. We present a generalized "Saffman-Einstein" relation that may be used to determine the linear viscoelastic shear modulus from single-bead microrheology experiments on membranes. We show that viscoelastic parameters can also be extracted from membrane domain flicker spectroscopy experiments. Contributions from fluid ine...

2015
Tasawar Hayat Muhammad Shoaib Anwar Muhammad Farooq Ahmad Alsaedi

Flow of viscoelastic fluid due to an impermeable stretching cylinder is discussed. Effects of mixed convection and variable thermal conductivity are present. Thermal conductivity is taken temperature dependent. Nonlinear partial differential system is reduced into the nonlinear ordinary differential system. Resulting nonlinear system is computed for the convergent series solutions. Numerical va...

In this paper, the reflection and refraction of longitudinal wave from a plane surface separating a micropolar viscoelastic solid half space and a fluid saturated incompressible half space is studied. A longitudinal wave (P-wave) impinges obliquely at the interface. Amplitude ratios for various reflected and transmitted waves have been obtained. Then these amplitude ratios have been computed nu...

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