scholarly journals Numerical study of parameters affecting pressure drop of power-law fluid in horizontal annulus for laminar and turbulent flows

2019 ◽  
Vol 9 (4) ◽  
pp. 3091-3101 ◽  
Author(s):  
Hicham Ferroudji ◽  
Ahmed Hadjadj ◽  
Ahmed Haddad ◽  
Titus Ntow Ofei
Keyword(s):  
Pressure Drop ◽  
Turbulent Flows ◽  
Power Law ◽  
Numerical Study ◽  
Power Law Fluid ◽  
Laminar And Turbulent Flows

A numerical study on combined baffles quick-separation device

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Ehsan Dehdarinejad ◽  
Morteza Bayareh ◽  
Mahmud Ashrafizaadeh
Keyword(s):  
Turbulent Flows ◽  
Separation Efficiency ◽  
Numerical Study ◽  
Turbulence Models ◽  
Complete Separation ◽  
Solid Particles ◽  
Flow Rates ◽  
Separation Device ◽  
Coupling Technique ◽  
Laminar And Turbulent Flows

Abstract The transfer of particles in laminar and turbulent flows has many applications in combustion systems, biological, environmental, nanotechnology. In the present study, a Combined Baffles Quick-Separation Device (CBQSD) is simulated numerically using the Eulerian-Lagrangian method and different turbulence models of RNG k-ε, k-ω, and RSM for 1–140 μm particles. A two-way coupling technique is employed to solve the particles’ flow. The effect of inlet flow velocity, the diameter of the splitter plane, and solid particles’ flow rate on the separation efficiency of the device is examined. The results demonstrate that the RSM turbulence model provides more appropriate results compared to RNG k-ε and k-ω models. Four thousand two hundred particles with the size distribution of 1–140 µm enter the device and 3820 particles are trapped and 380 particles leave the device. The efficiency for particles with a diameter greater than 28 µm is 100%. The complete separation of 22–28 μm particles occurs for flow rates of 10–23.5 g/s, respectively. The results reveal that the separation efficiency increases by increasing the inlet velocity, the device diameter, and the diameter of the particles.

Pressure drop prediction of power law fluid through granular media

1997 ◽  
Vol 72 (2-3) ◽  
pp. 319-323 ◽  
Author(s):  
G.J.F Smit ◽  
J.P du Plessis
Keyword(s):  
Pressure Drop ◽  
Power Law ◽  
Granular Media ◽  
Power Law Fluid

scholarly journals Flow Induced By A Rotating Microchannel-A Numerical Study

2021 ◽  
Author(s):  
Kashif Ali ◽  
Shahzad Ahmad ◽  
Anique Ahmad ◽  
Faisal Ali
Keyword(s):  
Power Law ◽  
Hartmann Number ◽  
Stokes Equations ◽  
Numerical Study ◽  
Wall Slip ◽  
Future Generation ◽  
Fluid Viscosity ◽  
Power Law Fluid ◽  
Fluid Behavior ◽  
Behavior Index

Abstract In this paper, a mathematical foundation has been developed for the primary understanding of complex interaction of the wall slip with the Coriolis and Lorentz forces acting orthogonally on the Electromagnetohydrodynamic (EMHD) flow of a power-law fluid in a microchannel. Modified Navier Stokes equations are solved numerically by incorporating the fully implicit computational scheme with suitable initial and boundary conditions, which generates numerical results in excellent comparison with the literature for a certain limiting case. An extensive effort has been made to understand how the Hartmann number, fluid behavior index, rotating Reynolds number, and slip parameter affects the flow. Results show the velocity of the power-law fluid depends strongly on flow parameters. Critical Hartmann number can be obtained for the power-law fluid in presence of uniform electric and magnetic fields. As a promising phenomenon, existence of a cross over point (which depends upon the fluid behavior index) for the centerline flow velocity, has also been predicted. Reduction in the shear stress and fluid viscosity can be controlled effectively by incorporating a slippery film of lubricant on the periphery of the microchannel. This work is useful to meet the upcoming challenges of future generation, like improvement in bio-magnetic-sensor technologies as well as electrical and mechanical mechanisms.

Numerical Study on Pulsating Laminar Flow in Annular Space for Power-Law Fluid

2013 ◽  
Vol 394 ◽  
pp. 86-91
Author(s):  
Shan Bo Huang ◽  
Liang Gong ◽  
Zhao Min Li
Keyword(s):  
Laminar Flow ◽  
Power Law ◽  
Numerical Study ◽  
Simple Algorithm ◽  
Petroleum Engineering ◽  
Annular Space ◽  
Reciprocating Motion ◽  
Power Law Fluid ◽  
Liquidity Index ◽  
Axial Pressure Gradient

A mathematical model of pulsating laminar flow inside an annular space for power-law fluid was established basing on the background of petroleum engineering. The characteristic of pulsating flow was obtained by employed SIMPLE algorithm. The investigation result shows that the velocity profile and axial pressure gradient are affected by the frequency, amplitude, liquidity index and annular distance of reciprocating motion and the affection is violent near the inner wall.

scholarly journals Numerical Study of the Magnetic Field Effects on the Heat Transfer and Entropy Generation Aspects of a Power Law Fluid over an Axisymmetric Stretching Plate Structure

Entropy ◽  
2017 ◽  
Vol 19 (3) ◽  
pp. 94 ◽  
Author(s):  
Payam Hooshmand ◽  
Hamed Gatabi ◽  
Navid Bagheri ◽  
Isma’il Pirzadeh ◽  
Ashkan Hesabi ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Heat Transfer ◽  
Entropy Generation ◽  
Power Law ◽  
Numerical Study ◽  
Magnetic Field Effects ◽  
Power Law Fluid ◽  
Plate Structure ◽  
Stretching Plate ◽  
The Magnetic Field

Peristaltic Transport of a Power-Law Fluid With Variable Consistency

1982 ◽  
Vol 104 (3) ◽  
pp. 182-186 ◽  
Author(s):  
J. B. Shukla ◽  
S. P. Gupta
Keyword(s):  
Pressure Drop ◽  
Friction Force ◽  
Power Law ◽  
Flow Rate ◽  
Peristaltic Transport ◽  
Peristaltic Wave ◽  
Power Law Fluid ◽  
Peripheral Layer

Effects of the consistency variation on the peristaltic transport of a non-Newtonian power-law fluid fluid through a tube have been investigated by taking into account the existence of a peripheral layer. It is shown that the flow rate flux, for zero pressure drop, increases as the amplitude of the peristaltic wave increases but it decreases due to the pseudoplastic nature of the fluid. It is also noted that, for zero pressure drop, the flux does not depend on the consistency of peripheral layer while the friction decreases as this consistency decreases. However, for nonzero pressure drop, the flux increases and the friction force decreases as the consistency of peripheral layer fluid decreases.

Power-law fluid flow across an array of infinite circular cylinders: a numerical study

1999 ◽  
Vol 87 (2-3) ◽  
pp. 263-282 ◽  
Author(s):  
M. Vijaysri ◽  
R.P. Chhabra ◽  
V. Eswaran
Keyword(s):  
Fluid Flow ◽  
Power Law ◽  
Numerical Study ◽  
Circular Cylinders ◽  
Power Law Fluid
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