نتایج جستجو برای: al2o3 nanofluid

تعداد نتایج: 15883  

In this work, the stencil adaptive method is applied to investigate the effects of a magnetic field on mixed convection of Al2O3-water nanofluid in a square lid-driven cavity. The incompressible Navier-Stokes equations are solved by an adaptive mesh method which has superior numerical advantages compared to the traditional method on the uniform fine grid. The main objective of this study is to ...

G.A. Sheikhzadeh, H. Khorasanizadeh S.P. Ghaffari

In this paper, mixed convection of Al2O3-EG-Water nanofluid in a square lid-driven enclosure is investigated numerically. The focus of this study is on the effects of variable thermophysical properties of the nanofluid on the heat transfer characteristics. The top moving and the bottom stationary horizontal walls are insulated, while the vertical walls are kept at different constant temperature...

In this article, the instable fluid velocity in the pipes with internal nanofluid is studied. The fluid is mixed by SiO2, AL2O3, CuO and TiO2 nanoparticles in which the equivalent characteristic of nanofluid is calculated by rule of mixture. The force induced by the nanofluid is assumed in radial direction and is obtained by Navier-Stokes equation considering viscosity of nanofluid. The displac...

Kashai, E., Rahmati , A. R. ,

A two-phase lattice Boltzmann model considering the interaction forces of nanofluid has been developed in this paper. It is applied to investigate the flow and natural convection heat transfer of Al2O3–H2O nanofluid in an enclosure containing internal heat generation. To understand the heat transfer enhancement mechanism of the nanofluid flow from the particle level, the lattice Boltzmann metho...

Journal: :energy equipment and systems 2015
hadi imani ali cheraqi ali jafarian mohammad mahdi heyhat

laminar mixed convection of aluminium oxide (al2o3)–water nanofluid flow in an inclined annulus using a single-phase approach was numerically studied. constant heat flux boundary conditions were applied on the inner and outer walls. all the thermophysical properties of nanofluid, such as, viscosity, heat capacity, thermal conductivity, and thermal expansion coefficient, except density in the bo...

Journal: :Mathematics 2021

This paper examines the impact of hybrid nanoparticles on stagnation point flow towards a curved surface. Silica (SiO2) and alumina (Al2O3) are added into water to form SiO2-Al2O3/water nanofluid. Both buoyancy-opposing -assisting flows considered. The governing partial differential equations reduced set ordinary equations, before being coded in MATLAB software obtain numerical solutions. Findi...

Amirhossein Zamzamian Maziar Dehghan Milad Tajik Jamal-Abad Mohammad Sadegh Valipour, Seyfolah Saedodin

Rheological characteristics of Al2O3, CuO and TiO2 nano particles were investigated in oil asthe base fluid at 1 and 2 wt.%. Constitutive relations for non-Newtonian fluid were discussedbased on the power-law model. Measured viscosities of each nanofluid were used to evaluatethe power-law and consistency index. Results indicated that the nanofluid viscosity decreasedby increasing the concentrat...

In the present research, the laminar forced convective heat transfer and fluid flow characteristics for Al2O3-water nanofluid flowing in different bend (i.e., 180o and 90o) pipes have been investigated numerically in a three-dimensional computational domain using the finite volume technique. The effects of different pertinent parameters, such as the Reynolds number of the duct, volume fraction ...

Journal: :CFD Letters 2022

Hybrid nanofluid has an extensive range of real-world applications. is a new and advanced modification extensively used to increase thermal efficiency in fluid flow systems. The main objective this research study magnetohydrodynamics hybrid numerically two dimensional over vertical exponentially shrinking sheet, considering the effects Joule heating slip condition. Furthermore, using Tiwari-Das...

Ebrahim Hajian, Hamed Safikhani, Rafat Mohammadi

In this paper, the Al2O3-water nanofluid flow in laminar and turbulent flows inside tubes fitted with diamond-shaped turbulators is numerically modeled. The nanofluid flow is modeled by employing a two-phase mixture method and applying the constant heat flux boundary condition at tube walls. In the results, the effects of different parameters such as the geometry of turbulators, volume fraction...

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