Results 11 to 20 of about 35,623 (166)
Shock and Vibration, 2021 This paper studies the in-line and cross-flow coupling vibration response characteristics of a marine viscoelastic riser subjected to two-phase internal flow and affected by the combined effects of several parameters including the volume fraction of gas ...
Xueping Chang +3 more
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A Backwards-Tracking Lagrangian-Eulerian Method for Viscoelastic Two-Fluid Flows
Applied Sciences, 2021 A new Lagrangian–Eulerian method for the simulation of viscoelastic free surface flow is proposed. The approach is developed from a method in which the constitutive equation for viscoelastic stress is solved at Lagrangian nodes, which are convected by ...
Simon Ingelsten +3 more
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Effect of viscoelasticity on displacement processes in porous media
Frontiers in Physics, 2023 Improving the displacement efficiency of capillary entrapments in porous media by adding high molecular weight polymers to the invading phase has various industrial applications, from enhanced oil recovery to soil remediation.
Michael Jung +5 more
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Impedance‐based viscoelastic flow cytometry [PDF]
ELECTROPHORESIS, 2019 AbstractElastic nature of the viscoelastic fluids induces lateral migration of particles into a single streamline and can be used by microfluidic based flow cytometry devices. In this study, we investigated focusing efficiency of polyethylene oxide based viscoelastic solutions at varying ionic concentration to demonstrate their use in impedimetric ...
Murat Serhatlioglu +3 more
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Viscoelastic Pipe Flow is Linearly Unstable [PDF]
Physical Review Letters, 2018 Newtonian pipe flow is known to be linearly stable at all Reynolds numbers. We report, for the first time, a linear instability of pressure driven pipe flow of a viscoelastic fluid, obeying the Oldroyd-B constitutive equation commonly used to model dilute polymer solutions.
Garg, Piyush +4 more
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Entropy, 2020 The cross-slot geometry plays an important role in the study of nonlinear effects of viscoelastic fluids. The flow of viscoelastic fluid in a micro cross-slot with a high channel aspect ratio (AR, the ratio of channel depth to width) can be divided into ...
Chao Yuan +5 more
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Flow Direction-Dependent Elastic Instability in a Symmetry-Breaking Microchannel
Micromachines, 2021 This paper reports flow direction-dependent elastic instability in a symmetry-breaking microchannel. The microchannel consisted of a square chamber and a nozzle structure. A viscoelastic polyacrylamide solution was used for the instability demonstration.
Wu Zhang +6 more
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Quasistatic Nonlinear Viscoelasticity and Gradient Flows [PDF]
Journal of Dynamics and Differential Equations, 2014 We consider the equation of motion for one-dimensional nonlinear viscoelasticity of strain-rate type under the assumption that the stored-energy function is $λ$-convex, which allows for solid phase transformations. We formulate this problem as a gradient flow, leading to existence and uniqueness of solutions.
J. M. Ball, Y. Şengül
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Viscoelastic phase separation in shear flow [PDF]
Physical Review E, 2004 16pages, 16figures, to be published in Phys.Rev ...
Imaeda, Tatsuhiro +2 more
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Numerical Simulation of Dynamic Phenomena of Unsteady Friction and Viscoelastic Effects in Pipeline under the Transient Flow [PDF]
علوم و مهندسی آبیاری, 2018 Plastic pipes are widely used in pressurized water systems. The analysis of transient flow and estimation of maximum and minimum pressure wave propagation in pipeline and pipe networks is required for design and practice of piping systems, pumping ...
Mostafa Rahmanshahi +2 more
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