MHD boundary layer flow of SWCNT‐water and MWCNT‐water nanofluid over a vertical cone with heat generation/absorption

Reddy, Y. R.; Reddy, M. Suryanarayana; Reddy, P. Sudarsana

doi:10.1002/htj.21393

Cited by 12 publications

(5 citation statements)

References 31 publications

(36 reference statements)

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“…It should be noted that two volume fractions of the nanomaterials, 0.5% and 1%, are considered here. In order to determine density, specific heat, thermal conductivity and dynamic viscosity, the following equations are applied [33,34]:…”

Section: Methodsmentioning

confidence: 99%

Thermal Management of Solar Photovoltaic Cell by Using Single Walled Carbon Nanotube (SWCNT)/Water: Numerical Simulation and Sensitivity Analysis

et al. 2022

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Despite the attractiveness of Photovoltaic (PV) cells for electrification and supplying power in term of environmental criteria and fuel saving, their efficiency is relatively low and is further decreased by temperature increment, as a consequence of absorption of solar radiation. In order to prevent efficiency degradation of solar cells due to temperature increment, thermal management is suggested. Active cooling of solar cells with use of liquid flow is one of the most conventional techniques used in recent years. By use of nanofluids with improved thermophysical properties, the efficiency of this cooling approach is improvable. In this article, Single Walled Carbon Nano Tube (SWCNT)/water nanofluid is used for cooling of a PV cell by considering variations in different factors such as volume fraction of solid phase, solar radiation, ambient temperature and mass flow rate. According to the findings, use of the nanofluid can lead to improvement in performance enhancement; however, this is not significant compared with water. In cases using water and the nanofluid at 0.5% and 1% concentrations, the maximum improvement in the efficiency of the cell compared with the cell without cooing were 49.2%, 49.3 and 49.4%, respectively. In addition, sensitivity analysis was performed on the performance enhancement of the cell and it was noticed that solar radiation has the highest impact on the performance enhancement by using the applied cooling technique, followed by ambient temperature, mass flow rate of the coolants and concentration of the nanofluid, respectively. Moreover, exergy analysis is implemented on the system and it is noticed that lower ambient temperature and solar radiation are preferred in term of exergy efficiency.

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Section: Methodsmentioning

confidence: 99%

Thermal Management of Solar Photovoltaic Cell by Using Single Walled Carbon Nanotube (SWCNT)/Water: Numerical Simulation and Sensitivity Analysis

et al. 2022

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“…The density, heat capacitance, and thermal diffusivity which are denoted by ρ nf , ( c p ) nf , and α nf of nanofluid, respectively, are given 42

(}, \begin{array}{l} ρ_{nf} = ρ_{f} ((), 1 - ϕ) + ρ_{CNT} ϕ, \\ {(ρ c_{p})}_{nf} = {(ρ c_{p})}_{f} ((), 1 - ϕ) + {(ρ c_{p})}_{CNT} ϕ, \\ α_{nf} = k_{nf} / {(ρ c_{p})}_{nf} . \end{array}) .

…”

Section: Formulationmentioning

confidence: 99%

Natural convection nanofluid flow with heat transfer analysis of carbon nanotubes–water nanofluid inside a vertical truncated wavy cone

Ellahi

Zeeshan

Waheed

et al. 2021

Math Methods in App Sciences

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The flow of heat transfer study of carbon nanotubes (CNTs)–water nanofluid over vertical truncated wavy cone is considered. The present boundary layer power law fluid is analyzed near the truncated wavy cone. The considered cone is wavy in physical configuration and placed in a vertical direction. Moreover, nanosized particles of CNTs suspended into water (base fluid) are transporting in two directions, which are modeled by using Boussinesq's approximation. Coordinate transformation is applied in order to shift the wavy surface to a flat surface. Then governing equation dealing with the momentum of nanofluid along with thermal stratification are reduced in dimensionless form by using appropriate transformation. Results point out that the thickness of thermal boundary layer decreases by increasing the value of volume fraction of carbon nanotubes. Finally, the obtained solution is related through a graphical survey, and it is inferred that the investigation is in good accordance with the current literature.

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“…Recently Mahabaleshwar et al [29] showed the effect of radiation on the Graphene Casson Nanofluid and the effect of CNTs modeled through a Newtonian fluid flow formulation. Recently Anusha et al [30], Vishalaksi et al [31], Senha et al [32] and several researchers in the following references [33][34][35][36][37][38][39][40] have discussed the flow of several nano liquids along various types of surfaces. The present paper aims at examining the fluid flow in SWCNT and MWCNT with the impact of the induced slip and inclined MHD.…”

Section: Introductionmentioning

confidence: 99%

Induced Navier’s Slip with CNTS on a Stretching/Shrinking Sheet under the Combined Effect of Inclined MHD and Radiation

et al. 2023

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The present article investigates viscous fluid flow’s heat and mass transfers over a stretching/shrinking sheet using the single and multi-wall carbon nanotube models. The analysis considers the effects of thermal radiation, induced slip, mass transpiration, and inclined magnetic force. The effect of the carbon nanotube model on fluid flow has not been considered in previous studies. By exploiting the similarity variable, the governing nonlinear partial differential equations are converted into nonlinear ordinary differential equation. The derived equations are solved analytically, and we obtained an exact solution for the velocity and energy conservation equation. The physical parameters of interest such as induced slip parameter, suction/injection, magnetic field, thermal radiation, and shear stress are analyzed and presented graphically. In particular, we show that the fluid flow in a single wall carbon nanotube transfers more energy than the multivalued nanotubes.

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MHD boundary layer flow of SWCNT‐water and MWCNT‐water nanofluid over a vertical cone with heat generation/absorption

Cited by 12 publications

References 31 publications

Thermal Management of Solar Photovoltaic Cell by Using Single Walled Carbon Nanotube (SWCNT)/Water: Numerical Simulation and Sensitivity Analysis

Thermal Management of Solar Photovoltaic Cell by Using Single Walled Carbon Nanotube (SWCNT)/Water: Numerical Simulation and Sensitivity Analysis

Natural convection nanofluid flow with heat transfer analysis of carbon nanotubes–water nanofluid inside a vertical truncated wavy cone

Induced Navier’s Slip with CNTS on a Stretching/Shrinking Sheet under the Combined Effect of Inclined MHD and Radiation

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