Mixed convective flow of a hybrid nanofluid between two parallel inclined plates under wall-slip condition

2021 ◽  
Author(s):  
Hang Xu
Keyword(s):  
Convective Flow ◽  
Wall Slip ◽  
Slip Condition ◽  
Hybrid Nanofluid ◽  
Mixed Convective Flow ◽  
Inclined Plates

scholarly journals Radiative mixed convective flow induced by hybrid nanofluid over a porous vertical cylinder in a porous media with irregular heat sink/source

2022 ◽  
Vol 30 ◽  
pp. 101711
Author(s):  
Umair Khan ◽  
Aurang Zaib ◽  
Anuar Ishak ◽  
El-Sayed M. Sherif ◽  
Iskandar Waini ◽  
...  
Keyword(s):  
Porous Media ◽  
Heat Sink ◽  
Convective Flow ◽  
Vertical Cylinder ◽  
Hybrid Nanofluid ◽  
Mixed Convective Flow

scholarly journals Hydrodynamic Analysis of Laminar Mixed Convective Flow of Ag-TiO2-Water Hybrid Nanofluid in a Horizontal Annulus

CFD letters ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 45-57
Author(s):  
Badr Ali Bzya Albeshri ◽  
Nazrul Islam ◽  
Ahmad Yahya Bokhary ◽  
Amjad Ali Pasha
Keyword(s):  
Heat Transfer ◽  
Cross Section ◽  
Convective Flow ◽  
Base Fluid ◽  
Entrance Region ◽  
Heat Transfer Fluid ◽  
Hybrid Nanofluid ◽  
Hydrodynamic Behavior ◽  
Buoyancy Forces ◽  
Mixed Convective Flow

Nanofluids occupy a large place in many fields of technology due its improved heat transfer and pressure drop characteristics. Very recently, a new type of nanofluid, known as hybrid nanofluid, which consists of a mixture of two different nanoparticles suspended in the base fluid has been found to be the most emerging heat transfer fluid. It is well also established that entrance region effect enhances heat transfer rate. The present study deals with numerical investigations of the hydrodynamic behavior of the laminar mixed convective flow of a hybrid nanofluid in the entrance region of a horizontal annulus. A thermal boundary condition of uniform heat flux at the inner wall and an adiabatic outer wall is selected. The SIMPLER numerical algorithm is adopted in the present study. The hybrid nanofluid consists of water as base fluid and Ag-TiO2 as nanoparticles. The ratio of Ag to TiO2 is maintained as 1:3. The objective of the current study is mainly to analyze the hydrodynamic behavior hybrid nanofluid in the entrance region. The investigation reveals that the effect of the secondary flow due to the buoyancy forces is more intense in the upper part of the annular cross-section. It increases throughout the cross-section until its intensity reaches a maximum and then it becomes weak far downstream. The development of axial flow and temperature field is strongly influenced by the buoyancy forces.

Mathematical Analysis of Thermal Energy Distribution in a Hybridized Mixed Convective Flow

2021 ◽  
Vol 10 (2) ◽  
pp. 222-231
Author(s):  
Shafiq Ahmad ◽  
Sohail Nadeem ◽  
Aysha Rehman
Keyword(s):  
Convective Flow ◽  
Volume Fraction ◽  
Variable Viscosity ◽  
Solid Volume Fraction ◽  
Momentum Equation ◽  
Hybrid Nanofluid ◽  
Governing Equations ◽  
Porosity Parameter ◽  
Heat Transfer Phenomenon ◽  
Mixed Convective Flow

The mixed convective flow of hybrid nanofluid (SWCNT-MWCNT/EG) containing micropolar fluid past a Riga surface embedded in porous medium is explored in detail throughout this study. In the momentum equation, the Darcy Forchheimer effect is used. The heat transfer phenomenon is exploited with viscous dissipation and thermal stratification over a non-Fourier heat flux model. PDEs are transformed into the necessary governing equations using transformations. The numerical results of non-linear governing equations are collected using Matlab function bvp4c. Graphical representations of the effects of relevant parameters on velocity, skin friction, and temperature are shown. The comparison of simple nanofluid and hybrid nanofluid is discussed in graphs. The temperature field is higher for hybrid nanofluid than simple nanofluid when solid volume fraction enhances. With increasing solid volume fraction, porosity parameter, and mixed convection parameter, the axial friction factor rises. The momentum boundary layer is inversely proportional to the slip parameter, Hartman number, variable viscosity and the porosity parameter.

Entropy Optimization in Nonlinear Mixed Convective Flow of Nanomaterials Through Porous Space

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Tasawar Hayat ◽  
Ikram Ullah ◽  
Ahmad Alsaedi ◽  
Shaher Momani
Keyword(s):  
Convective Flow ◽  
Second Law Of Thermodynamics ◽  
Second Law ◽  
Porous Space ◽  
Arrhenius Activation Energy ◽  
Suction Parameter ◽  
Electrically Conducting ◽  
Entropy Optimization ◽  
Dimensionless Variables ◽  
Mixed Convective Flow

Abstract Our intention in this article is to investigate entropy optimization in nonlinear mixed convective unsteady magnetohydrodynamic flow of nanomaterials in porous space. An exponentially stretched sheet creates the liquid flow. Nanomaterial is considered electrically conducting. The concentration and energy expressions comprise viscous dissipation, Joule heating, thermophoresis and Brownian motion aspects. Arrhenius activation energy is considered. Computation of entropy generation based upon the second law of thermodynamics is made. Nonlinear partial expressions are obtained via suitable dimensionless variables. Resultant expressions are tackled by the OHAM technique. Features of numerous variables on entropy, temperature, velocity and concentration are graphically visualized. Skin friction and the temperature gradient at the surface are also elaborated. Comparative analysis is deliberated in tabulated form to validate the previously published outcomes. Velocity is reduced significantly via the suction parameter. The entropy rate increases for higher values of Brinkman, Biot and Hartmann numbers.

Dynamics of Cattaneo-Christov Double Diffusion (CCDD) and arrhenius activation law on mixed convective flow towards a stretched Riga device

2021 ◽  
Vol 148 ◽  
pp. 111010
Author(s):  
Yi-Xia Li ◽  
Faisal Shah ◽  
M. Ijaz Khan ◽  
Ronnason Chinram ◽  
Yasser Elmasry ◽  
...  
Keyword(s):  
Convective Flow ◽  
Double Diffusion ◽  
Mixed Convective Flow
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