scholarly journals Characteristics of Newtonian heating on electrically conducting water-based nano-fluid with in permeable vertical micro-channels

2022 ◽  
Keyword(s):  
Newtonian Heating ◽  
Electrically Conducting ◽  
Nano Fluid ◽  
Micro Channels ◽  
Water Based

Fully developed forced convection analysis of magneto-hydrodynamic nano fluid through annular sector duct

2021 ◽  
pp. 095440622110071
Author(s):  
Farhan Ahmed
Keyword(s):  
Friction Factor ◽  
Forced Convection ◽  
Axial Direction ◽  
Nano Particles ◽  
Convection Flow ◽  
Fully Developed Flow ◽  
Electrically Conducting ◽  
Nano Fluid ◽  
Annular Sector ◽  
Transfer Flow

During this study, we have investigated the effect of magnetic field on heat transfer flow of an electrically conducting magneto-hydrodynamic, ( MHD) nano fluid through annular sector duct. The problem is formulated under the assumption of fully developed flow by ignoring the deviation of velocity components in the axial direction only; and simulated with the help of semi implicit method for pressure linked equations revised, ( SIMPLER). The effect of Hartman number, M, on fully developed forced convection flow has been determined for different values of Copper nano particles contribution in base fluid, ϕ, apex angle, β and ratio of radii, Ȓ. With increase in the value of M, a prominent effect has been observed on friction factor, fRe. Furthermore, the influence of nano particles contribution on friction factor, fRe, has been dominated, when we increase the value of M.

Transmission Performance of Water-Based Nano Fluid Based on Computational Fluid Dynamics

2015 ◽  
Vol 1095 ◽  
pp. 58-62
Author(s):  
Zheng Zheng Song ◽  
Zhang Yong Wu ◽  
Zi Yong Mo
Keyword(s):  
Mass Fraction ◽  
Good Resistance ◽  
Sedimentation Stability ◽  
Nano Fluid ◽  
Dispersing Agent ◽  
Shaped Tube ◽  
Velocity Flow ◽  
Water Based ◽  
Transmission Fluid ◽  
Membrane Treatment

The nanoboron carbide particle size is 60nm, dispersed in RO reverse osmosis membrane treatment water form water-based nanofluid by adding the dispersant. In experiment, Water-based nanoboron carbide fluid has good resistance sedimentation stability when adding sodium carboxymethyl cellulose as a dispersing agent. Prepared three kinds of water-based nanoboron carbide fluid, the mass fraction of nanoparticles is 0.6%, 0.8%, 1.0%. By establishing a model of U-shaped tube, simulated the water-based nanofluids flow field in U-shaped tube using FLUENT, get velocity flow lines picture and pressure variation graph by CFD post-processing. From simulation results obtained: Water-based nanoboron carbide has good transmission fluid performance when nanoparticles mass fraction of 0.8%.

scholarly journals Estimating the Volume of Unknown Inclusions in an Electrically Conducting Body with Voltage Measurements

Sensors ◽  
2019 ◽  
Vol 19 (3) ◽  
pp. 637 ◽  
Author(s):  
Antonio Affanni ◽  
Ruben Specogna ◽  
Francesco Trevisan
Keyword(s):  
Current Density ◽  
Low Cost ◽  
Region Of Interest ◽  
Density Field ◽  
Impedance Tomography ◽  
Electrically Conducting ◽  
Conducting Body ◽  
Micro Channels ◽  
Blood Clots ◽  
A Current

We propose a novel technique to estimate the total volume of unknown insulating inclusions in an electrically conducting body from voltage measurements. Unlike conventional Electrical Impedance Tomography (EIT) systems that usually exhibit low spatial resolution and accuracy, the proposed device is composed of a pair of driving electrodes which, supplied with a known sinusoidal voltage, create a current density field inside a region of interest. The electrodes are designed to generate a current density field in the region of interest that is uniform, to a good approximation, when the inclusions are not present. A set of electrodes with a polygonal geometry is used for four-wires resistance measurements. The proposed technique has been tested designing a low cost prototype, where all electrodes are on the bottom of the conducting body, showing good performances. Such a device may be used to monitor the volume of biological cells inside cell culture dishes or the volume of blood clots in micro-channels in lab-on-a-chip biosensors.

scholarly journals Effects of Slip, Brownian Motion and Thermophoresis on Peristaltic Pumping of Nano Fluid in an Asymmetric Channel with Porous Medium

2018 ◽  
Vol 7 (4.10) ◽  
pp. 484 ◽  
Author(s):  
S. Sreenadh ◽  
G. Yasodhara ◽  
B. Sumalatha ◽  
A. N.S.Srinivas
Keyword(s):  
Porous Medium ◽  
Nonlinear Partial Differential Equations ◽  
Asymmetric Channel ◽  
Peristaltic Motion ◽  
Governing Equations ◽  
Long Wavelength ◽  
Electrically Conducting ◽  
Nano Fluid ◽  
Peristaltic Pumping ◽  
Uniform Parameter

This paper deals with peristaltic motion of electrically conducting nanofluid in a tapered asymmetric channel through a porous medium in presence of heat and mass transfer under the effect of slip conditions. The problem is reduced mathematically by a set of nonlinear partial differential equations which describe the conservation of mass, momentum, energy and concentration of nanoparticles. The non-dimensional form of these equations is simplified under the assumption of long wavelength and low Reynolds number. The coupled governing equations are solved analytically. The expressions for velocity, stream function, temperature and concentration are derived. The results have been presented graphically for the various interested emerging parameters and the obtained results are discussed in detail. It is observed that the magnitude of the velocity decreases in the middle of the channel while it increases near the channel walls with an increase in the non-uniform parameter  It is also noticed that the nanoparticle temperature increases with increasing thermal slip parameter . The present result coincides with the findings of Kothandapani and Prakash [19].  

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