Fluid flow analysis of cilia beating in a curved channel in the presence of magnetic field and heat transfer

2020 ◽  
Vol 98 (2) ◽  
pp. 191-197 ◽  
Author(s):  
Hina Sadaf ◽  
S. Nadeem
Keyword(s):  
Magnetic Field ◽  
Heat Transfer ◽  
Velocity Profile ◽  
Flow Analysis ◽  
Fluid Motion ◽  
Flow Characteristics ◽  
Physical Parameters ◽  
Curved Channel ◽  
Radial Magnetic Field ◽  
Fluid Flow Analysis

This paper investigates fluid motion generated by cilia and a pressure gradient in a curved channel. The flow analysis is carried out in the presence of heat transfer and radial magnetic field. The leading equations are simplified under the familiar suppositions of large wavelength and small Reynolds number approximations. An exact solution has been developed for the velocity profile. The flow characteristics of the viscous fluid are computed in the presence of cilia and metachronal wave velocity. The effects of several stimulating parameters on the flow and heat transfer are studied in detail through graphs. It is found that symmetry of the velocity profile is broken owing to bending of the channel. The radially varying magnetic field decreases the velocity field, but near the left ciliated wall it induces the opposite behavior. It is also found that velocity profile increases due to increase in buoyancy forces throughout the domain. Numerical consequences for velocity profile are also accessible in the table for diverse values of the physical parameters.

scholarly journals Magnetorheological finishing of small gear teeth profiles using novel workpiece fixture

2021 ◽  
Author(s):  
Manjesh kumar ◽  
◽  
Abhinav Kumar ◽  
Anupam Alok ◽  
Manas Das ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Fluid Flow ◽  
Surface Characterization ◽  
Flow Analysis ◽  
Flow Characteristics ◽  
Surface Finishing ◽  
Computational Domain ◽  
Essential Components ◽  
Process Factors ◽  
Fluid Flow Analysis

Miniature gears are essential components of transmitting power in tiny motors used in the aviation, automobile, and healthcare sectors etc. Because of the intricacy of its shape, nanofinishing of tiny gear is a tough job. The rotational magnetorheological abrasive flow finishing (R-MRAFF) technique is a new hybrid methodology for the generation of nano-meter range surface finishing. These surfaces reduce friction between integrating parts, extending their life span. In the current study, a model for simulating the impacts of the R-MRAFF technique was developed using finite element (FE) analysis software, namely COMSOL® Multiphysics. The impacts of various process factors on the fluid flow characteristics while finishing the gear component are investigated using magnetostatic fluid flow analysis of magnetorheological polishing fluid (MRPF) in 3D computational domain of new workpiece fixture. To evaluate the forces operating in R-MRAFF technique, a viscosity model for MRP fluid flow around a complicated component (small steel gear) in an outside magnetic field is recognized and simulated. The magnetic field has a major impact on processing effectiveness by controlling the MRPF viscosity. During the polishing of the gear component, the surface finish attained at various places on working surfaces is uniform, which is confirmed by surface characterization of teeth profiles of small gear.

Effects of Heat Transfer, Magnetic Field and Space Porosity on Peristaltic Flow of a Newtonian Fluid in a Tapered Channel

2015 ◽  
Vol 813-814 ◽  
pp. 679-684 ◽  
Author(s):  
M. Kothandapani ◽  
Jayavel Prakash ◽  
V. Pushparaj
Keyword(s):  
Magnetic Field ◽  
Heat Transfer ◽  
Phase Difference ◽  
Newtonian Fluid ◽  
Fluid Transport ◽  
Flow Analysis ◽  
Flow Characteristics ◽  
Peristaltic Flow ◽  
Porous Space ◽  
Tapered Channel

In this paper, the influences of magnetic field and porous space of peristaltic flow of a Newtonian fluid in the tapered channel are studied. Flow analysis is also discussed in the presence of heat transfer. A model of wall-induced fluid flow within an infinite tapered channel having symmetric wall displacements and phase difference is developed. Expressions of dimensionless stream function and temperature are obtained analytically by employing long wavelength and low Reynolds number assumptions. The effects of various emerging parameters on the flow characteristics are shown and discussed with the help of graphs. It has been found that The geometric parameters likes, non-uniform parameter, amplitudes and phase difference control the fluid transport phenomena.

scholarly journals Peristaltic Flow with Heat Transfer for Nano-Coupled Stress Fluid through Non-Darcy Porous Medium in the Presence of Magnetic Field

Coatings ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 910
Author(s):  
Wael Abbas ◽  
Nabil T. M. Eldabe ◽  
Rasha A. Abdelkhalek ◽  
Nehad A. Zidan ◽  
Samir. Y. Marzouk
Keyword(s):  
Magnetic Field ◽  
Heat Transfer ◽  
Porous Medium ◽  
Couple Stress ◽  
Fluid Velocity ◽  
Fluid Motion ◽  
Physical Parameters ◽  
Linear Partial Differential Equations ◽  
Nanoparticles Concentration ◽  
Coupled Stress

In this paper, the peristaltic motion of nano-coupled stress fluid through non-Darcy porous medium is investigated, and the heat transfer is taken into account. The system is stressed by an external magnetic field. The Ohmic and viscous couple stress dissipations, heat generation and chemical reaction are considered. This motion is modulated mathematically by a system of non-linear partial differential equations, which describe the fluid velocity, temperature and nanoparticles’ concentration. These equations are transformed to non-dimensional form with the associated appropriate boundary conditions. The homotopy perturbation method is used to find the solutions of these equations as a function of the physical parameters of the problem. The effects of the parameters on the obtained solutions are discussed numerically and illustrated graphically. It is found that these parameters play an important role to control the solutions. Significant outcomes from graphical elucidation envisage that the inclusion of more magnetic field strength increases the resistance of the fluid motion. Intensification of the couple stress parameter attenuates the temperature values, while it increases with increasing thermophoresis parameter.

scholarly journals Magnetic field effect on convective heat transfer in corrugated flow channel

2017 ◽  
Vol 21 (5) ◽  
pp. 2105-2115
Author(s):  
Hadi Heidary ◽  
Mohammad Kermani ◽  
Bahram Dabir
Keyword(s):  
Magnetic Field ◽  
Heat Transfer ◽  
Heat Exchange ◽  
Numerical Study ◽  
Control Volume ◽  
Flow Analysis ◽  
Magnetic Field Effect ◽  
Wavy Channel ◽  
Study Heat Transfer ◽  
Fluid Flow Analysis

In this study heat transfer and fluid flow analysis in a wavy channel is numerically studied, while a magnetic field is applied in transverse direction to the main flow stream. Recently in a numerical study, we have observed that usage of wavy channel instead of straight one enhances heat exchange between the core flow and hot walls. On the other hand, the usage of magnetic field transverse to hot walls can enhance heat transfer in a straight channel. In this paper, we would like to examine if presence of these two methods simultaneously is useful for enhancement of heat exchange. For this purpose, the governing equations are numerically solved in the domain by the control volume approach based on the SIMPLE technique. Numerical studies are performed over a range of Reynolds number, Hartmann number, and the wave amplitude. From this study, it is concluded that heat transfer in channels can be enhanced by the usage of magnetic field or usage of wavy channel instead of a straight one. But simultaneous usage of magnetic field and wavy channel is not recommended.

scholarly journals Heat transfer and fluid flow analysis using nanofluids in diamond-shaped cavities with novel obstacles

2021 ◽  
Vol 15 (1) ◽  
pp. 1034-1056
Author(s):  
Alireza Aghaei ◽  
Suvanjan Bhattacharyya ◽  
Amin Dezfulizadeh ◽  
A.S. Goldanlou ◽  
S. Rostami ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Fluid Flow ◽  
Flow Analysis ◽  
Fluid Flow Analysis

scholarly journals Corrigendum by Simeon Oka, Editor-in-Chief of the Journal Thermal Science requested to replace .pdf file of the paper The effect of variable magnetic field on heat transfer and flow analysis of unsteady squeezing nanofluid flow between parallel plates using Galerkin method by Mohammad Rahimi-Gorji Oveis Pourmehran, Mofid Gorji-Bandpy and Davood Domiri Ganji, Published in the Journal Thermal Science, year 2017, vol. 21, no. 5, pp. 2057-2067; https://doi.org/10.2298/TSCI160524180R

2017 ◽  
Vol 21 (6 Part B) ◽  
pp. 3062-3062
Author(s):  
E Editorial
Keyword(s):  
Magnetic Field ◽  
Heat Transfer ◽  
Review Process ◽  
Peer Review Process ◽  
Flow Analysis ◽  
Editorial Staff ◽  
Variable Magnetic Field ◽  
Parallel Plates ◽  
Nanofluid Flow ◽  
Font Color

Due to error of the Editorial staff, unrevised manuscript has been published instead of the REVISED MANUSCRIPT sent by authors after peer review process. The corrected version of this article is printed in this issue on pages pp. 3063-3073<br><br><font color="red"><b> Link to the corrected article <u><a href="http://dx.doi.org/10.2298/TSCI160524180R">10.2298/TSCI160524180R</a></b></u>

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