Results 221 to 230 of about 19,721 (254)

Couple-stresses in peristaltic transport of fluids

Journal of Physics D: Applied Physics, 1994
Summary: Peristaltic pumping by a sinusoidal traveling wave in the walls of a two- dimensional channel field with a viscous incompressible couple-stress fluid is investigated. A perturbation solution is obtained which satisfies the momentum equation for the case in which the amplitude ratio (wave amplitude/channel half width) is small. The results show
El Shehawey, El Sayed F., Mekheimer, Kh. S.   +1 more
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Dynamics of a Couple‐Stress Fluid Membrane

Studies in Applied Mathematics, 1984
This work concerns the dynamics of a two‐dimensional (surface) fluid membrane which resists bending in a manner reminiscent of elastic shells. Such bending stiffness can arise from the molecular structure of the membrane, the molecules being treated as “directors” oriented normal to the surface.
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A Uniqueness Theorem on Couple-Stress Theory of Fluids

ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 1983
Existence and uniqueness of solution for the three-dimensional exterior problem is established by first proving a reciprocal theorem which is then used to obtain an integral representation for the velocity vector in terms of fundamental solutions for both bounded and unbounded domains. This representation then yields the uniqueness.
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Drag in couple stress fluids

Zeitschrift für angewandte Mathematik und Physik ZAMP, 1978
A general expression is derived for the drag experienced by an axially symmetric body in the slow steady flow of Stokes' couple stress fluids. The result is compared with that obtained for micropolar fluids and then applied to the particular case of flow past a sphere.
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Neglect of the Fluid Extra Stresses in Volumetrically Coupled Solid‐Fluid Problems

ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 2001
AbstractUsually the fluid flow through porous media is described by Darcy 's law or generalizations of it. In this contribution, Darcy 's law is derived from the theory of porous media. To archive this, the fluid extra stress (frictional stress) is neglected in comparision with the momentum exchange (drag force) between the fluid phase and the solid ...
Diebels, S., Ehlers, W., Markert, B.
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Integral Representations in Couple Stress Theory of Fluids

ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 1979
AbstractThe system of differential equations characterizing the slow, steady, incompressible flow of couple stress fluids is examined. Integral representation for the velocity vector is obtained with the aid of a constructed fundamental singular solution and a derived reciprocity theorem.
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Peristaltic flow of a couple stress fluid in an asymmetric channel

Biorheology: The Official Journal of the International Society of Biorheology, 2007
This paper presents an analysis of the peristaltic flow of a couple stress fluid in an asymmetric channel. The asymmetric nature of the flow is introduced through the peristaltic waves of different amplitudes and phases on the channel walls. Mathematical modelling corresponding to a two-dimensional flow has been carried out.
N, Ali, T, Hayat, M, Sajid
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Estimating pore fluid pressure-stress coupling

Marine and Petroleum Geology, 2016
Abstract Fracture Pressure (FP) prediction is a vital component in well planning for safe drilling in high pressure areas, in the estimation of seal capacity and seal breach risk analysis, for fluid injection and in fracture stimulation for oil/gas recovery from tight reservoirs and mature source rocks. Coupling of pore fluid pressure (PP) and FP at
Richard E. Swarbrick, Richard W. Lahann
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Slider bearings lubricated by fluids with couple stress

Wear, 1979
Abstract A theoretical study is presented of infinitely long slider bearings assuming the lubricant to be an incompressible fluid with couple stress. Analytical expressions for the load capacity, frictional force and the centre of pressure are derived.
G. Ramanaiah, Priti Sarkar
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Skew-symmetric couple-stress fluid mechanics

Acta Mechanica, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hadjesfandiari, Ali R., Hajesfandiari, Arezoo, Dargush, Gary F.   +2 more
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