Journal ArticleDOI
Mixed convection of copper-water nanofluid in a shallow inclined lid driven cavity using the lattice Boltzmann method
Arash Karimipour,Mohammad Hemmat Esfe,Mohammad Reza Safaei,Davood Toghraie Semiromi,Saeed Jafari,Salim Newaz Kazi +5 more
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In this article, the effects of different values of the cavity inclination angle and nanoparticles volume fraction at three states of free, force and mixed convection domination are investigated while the Reynolds number is kept fixed as Re = 100 and Re = 10.Abstract:
The goal of this work is to study the laminar mixed convection of water–Cu nanofluid in an inclined shallow driven cavity using the lattice Boltzmann method. The upper lid of the cavity moves with constant velocity, U 0 , and its temperature is higher than that of the lower wall. The side walls are assumed to be adiabatic. The effects of different values of the cavity inclination angle and nanoparticles volume fraction at three states of free, force and mixed convection domination are investigated while the Reynolds number is kept fixed as Re = 100 and Re = 10 . Validation of present results with those of other available ones shows a suitable agreement. Streamlines, isotherms, Nusselt numbers, and velocity and temperature profiles are presented. More Nusselt numbers can be achieved at larger values of the inclination angle and nanoparticles volume fraction at free convection domination. Results imply the appropriate ability of LBM to simulate the mixed convection of nanofluid in a shallow inclined cavity.read more
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An updated review on application of nanofluids in heat exchangers for saving energy
Ahmad Hajatzadeh Pordanjani,Saeed Aghakhani,Masoud Afrand,Boshra Mahmoudi,Omid Mahian,Somchai Wongwises,Somchai Wongwises +6 more
TL;DR: In this paper, a review on application of nanofluids in heat exchangers has been addressed, and it can be concluded that the use of nanophotonics in most cases improves heat transfer, which reduces the volume of heat exchanger, saving energy, consequently water consumption and industrial waste.
Journal ArticleDOI
A comprehensive review of thermo-physical properties and convective heat transfer to nanofluids
K.H. Solangi,Salim Newaz Kazi,M. R. Luhur,Ahmad Badarudin,Ahmad Amiri,Rad Sadri,Mohd Nashrul Mohd Zubir,Samira Gharehkhani,K.H. Teng +8 more
TL;DR: In this paper, the authors present an updated review of properties of nanofluids, such as physical (thermal conductivity) and rheological properties, with emphasis on their heat transfer enhancement characteristics.
Journal ArticleDOI
Simulation of copper-water nanofluid in a microchannel in slip flow regime using the lattice Boltzmann method
Arash Karimipour,Alireza Hossein Nezhad,Annunziata D’Orazio,Mohammad Hemmat Esfe,Mohammad Reza Safaei,Ebrahim Shirani +5 more
TL;DR: In this article, the effects of wall slip velocity and temperature jump of the nanofluid were studied for the first time by using lattice Boltzmann method, and the results indicated that LBM can be used to simulate forced convection for the nano-fluid micro flows.
Journal ArticleDOI
Investigation of rib's height effect on heat transfer and flow parameters of laminar water-Al2O3 nanofluid in a rib-microchannel
Omid Ali Akbari,Davood Toghraie,Arash Karimipour,Mohammad Reza Safaei,Marjan Goodarzi,Habibollah Alipour,Mahidzal Dahari +6 more
TL;DR: The results indicate that the normal internal ribs or turbulators, can significantly enhance the convective heat transfer within a microchannel and illustrate that by increasing the rib's heights and volume fraction of nanoparticles, friction coefficient, heat transfer rate and average Nusselt number of the ribbed-microchannels tend to augment.
Journal ArticleDOI
An experimental study on thermal conductivity and viscosity of nanofluids containing carbon nanotubes
Rad Sadri,Goodarz Ahmadi,Hussein Togun,Mahidzal Dahari,Salim Newaz Kazi,Emad Sadeghinezhad,Nashrul Zubir +6 more
TL;DR: This study focused on providing experimental data on the effects of ultrasonication, temperature and surfactant on the thermo-physical properties of multi-walled carbon nanotube (MWCNT) nanofluids, showing that the viscosity and thermal conductivity of nan ofluids are influenced by the sonication time.
References
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A Model for Collision Processes in Gases. I. Small Amplitude Processes in Charged and Neutral One-Component Systems
TL;DR: In this paper, a kinetic theory approach to collision processes in ionized and neutral gases is presented, which is adequate for the unified treatment of the dynamic properties of gases over a continuous range of pressures from the Knudsen limit to the high pressure limit where the aerodynamic equations are valid.
Journal ArticleDOI
Lattice boltzmann method for fluid flows
Shiyi Chen,Gary D. Doolen +1 more
TL;DR: An overview of the lattice Boltzmann method, a parallel and efficient algorithm for simulating single-phase and multiphase fluid flows and for incorporating additional physical complexities, is presented.
Small amplitude processes in charged and neutral one-component systems
TL;DR: In this article, a kinetic theory approach to collision processes in ionized and neutral gases is presented, which is adequate for the unified treatment of the dynamic properties of gases over a continuous range of pressures from the Knudsen limit to the high pressure limit where the aerodynamic equations are valid.