Wavelet strategy for flow and heat transfer in CNT-water based fluid with asymmetric variable rectangular porous channel

Pandit, Sapna; Sharma, Seema

doi:10.1007/s00366-020-01139-z

Cited by 7 publications

(6 citation statements)

References 35 publications

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“…For this purpose, we draw two lines before and after the circle which is equidistant from the circle and to determine the velocity magnitude as well as pressure by the numerical procedure through COMSOL Multiphysics 5.4. In Figure 10, we found the velocity magnitude in line 1 before the circle and line 2 Numerical results [28] Numerical results [29] Numerical results [30] Present code after the circle, and it is deducted that the ow rate in the middle of the channel is minimum. It is showing that after striking o the uid with the circular obstacle, the uid losses it is power and slows down and therefore vortex can be seen there.…”

Section: Velocity Field and Pressurementioning

confidence: 93%

“…Convergence analysis of this study showed that the error could be minimized to zero by increasing the resolution level. Using the wavelet collocation procedure, an asymmetric channel was analyzed for its physical characteristics due to unsteady heat distribution and the spread of nanofluid flow [29]. e velocity and the temperature profiles were discussed in the terms of volume fraction, expansion ratio, and the Reynolds number.…”

Section: Introduction and Literature Reviewmentioning

confidence: 99%

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Modelling and Simulation of Fluid Flow through a Circular Cylinder with High Reynolds Number: A COMSOL Multiphysics Study

Memon

Bhatti

et al. 2022

Journal of Mathematics

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In this study, we intend to investigate the steady-state and laminar flow of a viscous fluid through a circular cylinder fixed between two parallel plates keeping the aspect ratio of 1 : 5 from cylinder radius to height of the channel. The two-dimensional, incompressible fluid flow problem has been simulated using COMSOL Multiphysics 5.4 which implements finite element’s procedure. The flow pattern will be investigated by using the Reynolds number from 100 to 1000. The reattachment length formed at the back of the cylinder and drag force when the fluid comes to strike with the front surface of the cylinder is expressed in terms of Reynolds numbers. We propose to calculate the velocity and the pressure before and after the cylinder. For this purpose, two-line graphs before and after the cylinder will be drawn to check the impact of cylinder on both velocity and pressure. It was found that the percentage change in the velocity as well as pressure before to after the cylinder is changing their behaviours at Re = 700. The study is important because the empirical equations between the vortex’s lengths formed along the cylinder using the linear regression process obtained in this study may be used for future implementation.

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Section: Velocity Field and Pressurementioning

confidence: 93%

Section: Introduction and Literature Reviewmentioning

confidence: 99%

Modelling and Simulation of Fluid Flow through a Circular Cylinder with High Reynolds Number: A COMSOL Multiphysics Study

Memon

Bhatti

et al. 2022

Journal of Mathematics

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“…(1 − ϕ) 2.5 are constant parameters, α � a _ a/] is the wall expansion ratio which is very +ve and − ve for expansion and contraction, and R l � aV l /] and R u � aV u /] are the permeation RNs relevant to the bottom and top walls which are +ve due to injection of cooled fluid. Following the work of Uchida and Aoki and Pandit and Sharma [18,19], to normalize equations ( 9) and (10), substitute g � G/R which leads to…”

Section: Description Of the Problem And Mathematical Modelmentioning

confidence: 99%

“…First, apply the boundary conditions ( 12) and ( 15) in equations ( 29) and (30). After that, substitute the values of g (4) n+1 (y), g (3) n+1 (y), g (2) n+1 (y), g (1) n+1 (y), g n+1 (y) from ( 29) in (19) and h (2) (y), h (1) (y), h(y) from ( 30) in (14) with y l � (l − 0.5/2M), l � 1, 2, . .…”

Section: Wavelet Family and Uniform S2hwsmentioning

confidence: 99%

Wavelet Operational Matrices and Lagrange Interpolation Differential Quadrature‐Based Numerical Algorithms for Simulation of Nanofluid in Porous Channel

Alqahtani

Jiwari

2022

Journal of Mathematics

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This work analyses the features of nanofluid flow and thermal transmission (NFTT) in a rectangular channel which is asymmetric by developing two numerical algorithms based on scale-2 Haar wavelets (S2HWs), Lagrange’s interpolation differential quadrature technique (LIDQT), and quasilinearization process (QP). In the simulation procedure, first of all, using similarity transformation (ST), the governing unsteady 2D flow model is changed into two highly non-linear ODEs. After that, QP is applied to linearize the non-linear ODEs, and finally S2HWs and LIDQT are used to simulate the non-linear system of ODEs. In results and discussion section, the parameters Reynolds number (R), expansion ratio and Nusselt (Nu), and nanoparticle volume fraction φ are analysed with respect to velocity and temperature profiles. The proposed techniques are easy to implement for fluid and heat transfer (FHT) problems.

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“…They witnessed spherical shaped nanoparticles possess lowered thermal conductivity as equated with non-spherical case. Pandit and Sharma 32 employed wavelet scheme to resolve the equations of unsteady flow of nanoliquid passing through a rectangular passage. Similar kind of work carried by Ramesh et al 33 using hybridized nanoliquid flow across a cylinder.…”

Section: Introductionmentioning

confidence: 99%

Impact of nonlinear radiation on magnetohydrodynamic flow of hybrid nanofluid with heat source effect

Sandeep

Ranjana

Samrat

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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This investigation is performed to deliberate the novel significance of nonlinear thermal radiation effect on magnetohydrodynamic flow of Casson hybrid nanoliquid caused by a curved stretching sheet. The flow and thermal transport nature of three different hybrid nanoliquids in the stimulus of viscous dissipation, nonlinear radiation and magnetic force is discussed numerically. The novelty of this work is to obtain the simultaneous solutions for three different types of hybrid nanoliquids, they are obtained by suspending titanium alloy (Ti6Al4vs.) is composed of titanium, aluminum and vanadium in the ratio of 90:6:4 respectively and aluminium alloy (AA7075) is compossed of Aluminum, Zinc, Magnesium and Copper nanoparticles in the ratio of 90:6:3:1 respectives with added metals Silicon, Ferrous and Magnesium. in three various working liquids viz. methanol, ethylene glycol and engine oil. The flow governing PDE's are transmuted into ODE's with suitable similarity transformation and solved by using Runge-Kutta and Newton's approach. Numerical outcomes of flow and temperature profiles are presented via graphical trends, also skin friction coefficient and rate of thermal transfer are illustrated via tabulated values. Major outcomes reveals that, inclusion of hybrid nanometer sized particles in pedestal liquid lead to an large hike in thermal transfer performance. Importantly, thermal transport rate and temperature profiles of the hybrid nanoliquid rises with improving nonlinear radiation values and these results are significant in nonlinear radiation case as compared with linear radiation case.

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Wavelet strategy for flow and heat transfer in CNT-water based fluid with asymmetric variable rectangular porous channel

Cited by 7 publications

References 35 publications

Modelling and Simulation of Fluid Flow through a Circular Cylinder with High Reynolds Number: A COMSOL Multiphysics Study

Modelling and Simulation of Fluid Flow through a Circular Cylinder with High Reynolds Number: A COMSOL Multiphysics Study

Wavelet Operational Matrices and Lagrange Interpolation Differential Quadrature‐Based Numerical Algorithms for Simulation of Nanofluid in Porous Channel

Impact of nonlinear radiation on magnetohydrodynamic flow of hybrid nanofluid with heat source effect

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