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Controlling Viscoelastic Flow in Microchannels with Slip
Langmuir, 2011We show that viscoelastic flow in a microchannel under a dynamic pressure gradient dramatically changes with the value of the apparent slip. We demonstrate this by using classical hydrodynamics and the Navier boundary condition for the apparent slip. At certain driving frequencies, the flow is orders of magnitude different for systems with and without ...
Bravo-Gutiérrez, M. E +3 more
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The Canadian Journal of Chemical Engineering, 2003
AbstractSlip flow in ducts occurs in many practical fluid transport situations. The method of eigenfunction expansion and collocation is used to solve the velocity distribution for slip flow in ducts of polygonal, elliptic and cuspidal cross sections. The friction factor‐ Reynolds number products are tabulated.
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AbstractSlip flow in ducts occurs in many practical fluid transport situations. The method of eigenfunction expansion and collocation is used to solve the velocity distribution for slip flow in ducts of polygonal, elliptic and cuspidal cross sections. The friction factor‐ Reynolds number products are tabulated.
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Rough curved microchannel slip flow
The European Physical Journal Plus, 2020This paper models a slip flow through a curved microchannel. The curved walls confining the flow have surface roughness of small amplitude. Through domain perturbation analysis, the analytical expression of the volumetric flow rate is obtained as a function of the Knudsen number of the slip flow, the channel radius of curvature and the parameters ...
Nnamdi Fidelis Okechi, Saleem Asghar
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Slip mechanisms in complex fluid flows
Soft Matter, 2015The classical no-slip boundary condition of fluid mechanics is not always a valid assumption for the flow of several classes of complex fluids including polymer melts, their blends, polymer solutions, microgels, glasses, suspensions and pastes.
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Journal of Non-Newtonian Fluid Mechanics, 2012
The capillary flow of a high-density polyethylene (HDPE) melt was studied both experimentally and numerically. The excess pressure drop due to entry (entrance pressure drop), the compressibility, the effect of pressure and temperature on viscosity, and the slip effects on the capillary data analysis have been examined.
Mahmoud Ansari +2 more
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The capillary flow of a high-density polyethylene (HDPE) melt was studied both experimentally and numerically. The excess pressure drop due to entry (entrance pressure drop), the compressibility, the effect of pressure and temperature on viscosity, and the slip effects on the capillary data analysis have been examined.
Mahmoud Ansari +2 more
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Slip Flow of Linearized Couette Problem
The Physics of Fluids, 1966An asymptotic solution, valid throughout the physical space, is obtained for the linearized Couette problem at small Knudsen number. The error introduced by this solution is of the order of (1/α) exp [−(1/β)α2/3] where (1/α) is the Knudsen number and β is any real number greater than unity.
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Slip flow in elliptic microchannels
International Journal of Thermal Sciences, 2007Microscale fluid dynamics has received intensive interest due to the emergence of Micro-Electro-Mechanical Systems (MEMS) technology. When the mean free path of the gas is comparable to the channel's characteristic dimension, the continuum assumption is no longer valid and a velocity slip may occur at the duct walls.
Zhipeng Duan, Y.S. Muzychka
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Journal of the Aeronautical Sciences, 1954
Skin-friction data in the slip flow regime are presented, covering the range: 0.008 < M/\/~Re < 0.38; 34 < Re < 2,020 for 2.5 < M < 3.8; 3 < Re < 500 for M ~ 0.2 and 0.6. The results are discussed in terms of the various relevant theories, and it is inferred that, in the neighborhood of Re = 1,000, the dominant effect is the interaction between ...
S. A. SCHAAF, F. S. SHERMAN
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Skin-friction data in the slip flow regime are presented, covering the range: 0.008 < M/\/~Re < 0.38; 34 < Re < 2,020 for 2.5 < M < 3.8; 3 < Re < 500 for M ~ 0.2 and 0.6. The results are discussed in terms of the various relevant theories, and it is inferred that, in the neighborhood of Re = 1,000, the dominant effect is the interaction between ...
S. A. SCHAAF, F. S. SHERMAN
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Zeitschrift für angewandte Mathematik und Physik, 2009
This paper is concerned with uniform axial flow of a gas along a semi-infinite microcylinder in the slip regime. Following Glauert and Lighthill (Proc R Soc 230A:188–203, 1955), the effect of slip on the skin friction is investigated by employing an asymptotic series approach for large axial distances along the cylinder.
L. J. Crane, A. G. McVeigh
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This paper is concerned with uniform axial flow of a gas along a semi-infinite microcylinder in the slip regime. Following Glauert and Lighthill (Proc R Soc 230A:188–203, 1955), the effect of slip on the skin friction is investigated by employing an asymptotic series approach for large axial distances along the cylinder.
L. J. Crane, A. G. McVeigh
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Nonlinear Dynamics of Slipping Flows
Radiophysics and Quantum Electronics, 2023E. A. Kuznetsov +2 more
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