Some new aspects of the slow flow of a viscous fluid through an axisymmetric duct expansion or contraction. I ? Numerical part

1982 ◽  
Vol 39 (3) ◽  
pp. 215-232 ◽  
Author(s):  
D. Sigli ◽  
P. Monnet
Keyword(s):  
Viscous Fluid ◽  
Slow Flow ◽  
Axisymmetric Duct

scholarly journals Application of Hypothesis of Replacement at the Analysis of a Slow Flow of a Body by a Viscous Fluid

Engineering ◽  
2011 ◽  
Vol 03 (06) ◽  
pp. 632-638
Author(s):  
Andrey N. Volobuev ◽  
Eugene S. Petrov
Keyword(s):  
Viscous Fluid ◽  
Slow Flow

Slow flow of an elastic- viscous fluid past an immersed body

1974 ◽  
Vol 8 (2) ◽  
pp. 125-134 ◽  
Author(s):  
Baltasar Mena ◽  
Bruce Caswell
Keyword(s):  
Viscous Fluid ◽  
Slow Flow

scholarly journals Viscous fluid flow between plane walls in presence of temperature gradient

2021 ◽  
pp. 26-38
Author(s):  
Алексей Олегович Сыромясов ◽  
Татьяна Вячеславовна Меньшакова
Keyword(s):  
Temperature Gradient ◽  
Viscous Fluid ◽  
Fluid Velocity ◽  
Asymptotic Methods ◽  
Temperature Drop ◽  
Fluid Viscosity ◽  
Slow Flow ◽  
First Order ◽  
Order Polynomial ◽  
Isothermal Case

В статье изучается медленный поток вязкой несжимаемой жидкости, ограниченной двумя параллельными плоскостями. Течение вызвано либо движением одной плоскости относительно другой, либо перепадом давления вдоль двух неподвижных плоскостей. Предполагается, что вязкость жидкости есть многочлен первой степени от температуры, а в рассматриваемом объеме поддерживается постоянный градиент этой величины. Это приводит к возмущению потока по сравнению с изотермическим случаем. Асимптотическими методами исследована зависимость возникающих искажений от типа потока и взаимной ориентации потока и градиента температуры. При этом перепад температуры на расстоянии, равном зазору между плоскостями, считается малым. Показано, что эти искажения могут вноситься как в скорость, так и в давление жидкости. В последнем случае при наличии в жидкости взвеси возможно возникновение дополнительной подъемной силы или силы тяги, действующей на инородные частицы. Slow flow of incompressible viscous fluid confined by two parallel planes is studied in the paper. The flow is caused either by motion of one plane with respect to another or by pressure drop along the planes. It is supposed that fluid viscosity is the first-order polynomial of temperature and that its gradient is constant in the entire domain under study. These two reasons cause the flow to be disturbed (compared with isothermal case). Dependence of these disturbances on the type of flow and on the orientation of temperature gradient with respect to the flow is investigated by asymptotic methods. Temperature drop on distances equal to the gap between planes is supposed to be small during the investigation. It is shown that both fluid velocity and pressure may be disturbed. In the last case additional lift or drag force may act on the alien particles suspended in the fluid (if it contains any).

Drag on fixed beds of fibres in slow flow

1998 ◽  
Vol 355 ◽  
pp. 163-192 ◽  
Author(s):  
I. D. HOWELLS
Keyword(s):  
Viscous Fluid ◽  
Viscous Flow ◽  
Volume Fraction ◽  
Unit Length ◽  
Slow Flow ◽  
Second Stage ◽  
First Approximation ◽  
Flow Through ◽  
Fixed Beds ◽  
Long Cylinder

As a sequel to earlier work on viscous flow through random beds of fixed spheres, the flow through beds of fixed cylindrical fibres is studied by the same method. Several distributions of orientation are considered. The aim is to find the shielding radius and drag per unit length as a function of volume fraction occupied by the fibres, in the semi-dilute situation. The first approximation is obtained from the drag on a very long cylinder resulting from the uniform flow at infinity of a viscous fluid in the presence of Darcy resistance. Estimates are made of the effects of finite length, and of curvature of the fibres. Finally the effect of a neighbouring cylinder is considered, to obtain the second-stage approximation for straight fibres. Comparison is made with some experimental and numerical results for unidirectional fibres and for plane pads.

Microscopic Observation of FiltrapTM Membrane in Filter Slow Flow/No Reflow Phenomenon

2016 ◽  
Vol 8 (2) ◽  
pp. 98-103
Author(s):  
Akifumi Higashi ◽  
Mitsuru Kimura ◽  
Tatsuya Hondo ◽  
Shin Eno ◽  
Keiji Matsuda ◽  
...  
Keyword(s):  
Microscopic Observation ◽  
Slow Flow ◽  
No Reflow ◽  
No Reflow Phenomenon
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