Lattice Boltzmann simulation of nanofluid flow and heat transfer in a hollow multi-pipe heat exchanger considering nanoparticles' shapes

Rahimi, Alireza; Aravindhan, Surendar; Kasaeipoor, Abbas; Hooshmand, Payam; Malekshah, Emad Hasani

doi:10.1016/j.powtec.2018.08.086

Cited by 33 publications

(5 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They also tried to present a new method to show the LBM applicability in solving different problems, such as multiphase conditions and porous media under various physical conditions (Frijters et al , 2015; Zhang et al , 2017; Li et al , 2018; Cheng et al , 2018; Liu et al , 2016). Among its industrial applications is to increase thermal efficiency in heat exchangers (Bahmani et al , 2018; Rahimi et al , 2018; Bamdad and Ashorynejad, 2015; Leonardi et al , 2012; Goodarzi et al , 2016). Regarding the improved efficiency of LBM by engineers, using it for two-phase flow simulation is becoming more common, and its results are consistent with experimental findings (Kamali et al , 2012; Huang et al , 2017; Kashyap and Dass, 2018; Kharmiani and Passandideh-Fard, 2018; Yazdi et al , 2018; Nemati et al , 2018).…”

Section: Introductionmentioning

confidence: 99%

Lattice Boltzmann method to simulate convection heat transfer in a microchannel under heat flux

Mozaffari

D’Orazio

Karimipour

et al. 2019

HFF

View full text Add to dashboard Cite

Purpose The purpose of this paper is to improve the lattice Boltzmann method’s ability to simulate a microflow under constant heat flux. Design/methodology/approach Develop the thermal lattice Boltzmann method based on double population of hydrodynamic and thermal distribution functions. Findings The buoyancy forces, caused by gravity, can change the hydrodynamic properties of the flow. As a result, the gravity term was included in the Boltzmann equation as an external force, and the equations were rewritten under new conditions. Originality/value To the best of the authors’ knowledge, the current study is the first attempt to investigate mixed-convection heat transfer in an inclined microchannel in a slip flow regime.

show abstract

Section: Introductionmentioning

confidence: 99%

Lattice Boltzmann method to simulate convection heat transfer in a microchannel under heat flux

Mozaffari

D’Orazio

Karimipour

et al. 2019

HFF

View full text Add to dashboard Cite

show abstract

“…For the nanofluid, the thermo-physical properties must be estimated. In this regard, the density ρ nf , thermal expansion coefficient ( ρβ ) nf and specific heat energy ( ρC P ) nf are estimated as follows (Rahimi et al , 2018m; Salari et al , 2018b; Rahimi et al , 2018j): …”

Section: Numerical Proceduresmentioning

confidence: 99%

Lattice Boltzmann simulation of convective flow and heat transfer in a nanofluid-filled hollow cavity

Aalizadeh

Aghamolaei

et al. 2019

HFF

Self Cite

View full text Add to dashboard Cite

Purpose This paper aims to to simulate the flow and heat transfer during free convection in a square cavity using double-multi-relaxation time (MRT) lattice Boltzmann method. Design/methodology/approach The double-MRT lattice Boltzmann method is used, and the natural convection fluid flow and heat transfer under influence of different parameters are analyzed. The D2Q5 model and D2Q9 model are used for simulation of temperature field and flow field, respectively. The cavity is filled with CuO-water nanofluid; in addition, the thermo-physical properties of nanofluid and the effect of nanoparticles’ shapes are considered using Koo–Kleinstreuer–Li (KKL) model. On the other hand, the cavity is included with an internal active hollow with constant thermal boundary conditions at its walls and variable dimensions. It should be noted that the dimensions of the internal hollow will be determined by as aspect ratio. Findings The Rayleigh number, nanoparticle concentration and the aspect ratio are the governing parameters. The heat transfer performance of the cavity has direct relationship with the Rayleigh number and solid volume fraction of CuO-water nanofluid. Moreover, the configuration of the cavity is good controlling factor for changing the heat transfer performance and entropy generation. Originality/value The originality of this work is using double-MRT lattice Boltzmann method in simulating the free convection fluid flow and heat transfer.

show abstract

“…Spherical and non-spherical nanoparticle suspensions of magnetite (Fe 3 O 4 ) and graphene oxide (GO) were suspended in pure water. Rahimi et al [ 25 ] studied two-dimensional natural convection and entropy generation in a hollow heat exchanger filled with a CuO-water nanofluid. The KKL model was used to estimate the dynamic viscosity of nanoparticles based on their shape in the simulation.…”

Section: Introductionmentioning

confidence: 99%

Shape-Factor Impact on a Mass-Based Hybrid Nanofluid Model for Homann Stagnation-Point Flow in Porous Media

You

2023

Nanomaterials

View full text Add to dashboard Cite

This paper studies the impact of shape factor on a mass-based hybrid nanofluid model for Homann stagnation-point flow in porous media. The HAM-based Mathematica package BVPh 2.0 is suitable for determining approximate solutions of coupled nonlinear ordinary differential equations with boundary conditions. This analysis involves discussions of the impact of the many physical parameters generated in the proposed model. The results show that skin friction coefficients of Cfx and Cfy increase with the mass of the first and second nanoparticles of the hybrid nanofluids w1 and w2 and with the coefficient of permeability in porous media. For the axisymmetric case of γ = 0, when w1 = w2 = 10 gr, wf = 100 gr and Cfx = Cfy = 2.03443, 2.27994, 2.50681, and 3.10222 for σ = 0, 1, 2, and 5. Compared with w1 = w2 = 10 gr, wf = 100 gr, and σ = 0, it can be found that the wall shear stress values increase by 12.06%, 23.21%, and 52.48%, respectively. As the mass of the first and second nanoparticles of the mass-based hybrid nanofluid model increases, the local Nusselt number Nux increases. Values of Nux obviously decrease and change with an increase in the coefficient of permeability in the range of γ < 0; otherwise, Nux is less affected in the range of γ > 0. According to the calculation results, the platelet-shaped nanoparticles in the mass-based hybrid nanofluid model can achieve maximum heat transfer rates and minimum surface friction.

show abstract

Lattice Boltzmann simulation of nanofluid flow and heat transfer in a hollow multi-pipe heat exchanger considering nanoparticles' shapes

Cited by 33 publications

References 21 publications

Lattice Boltzmann method to simulate convection heat transfer in a microchannel under heat flux

Lattice Boltzmann method to simulate convection heat transfer in a microchannel under heat flux

Lattice Boltzmann simulation of convective flow and heat transfer in a nanofluid-filled hollow cavity

Shape-Factor Impact on a Mass-Based Hybrid Nanofluid Model for Homann Stagnation-Point Flow in Porous Media

Contact Info

Product

Resources

About