Investigations of convective heat transfer in ferrofluid microflows using lattice-Boltzmann approach

Xuan, Yi; Li, Qiang; Yang, Meng

doi:10.1016/j.ijthermalsci.2006.04.002

Cited by 83 publications

(19 citation statements)

References 22 publications

(26 reference statements)

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“…Investigations on LBM are still going on in order to attain more progress for better simulation of fluid flow and heat transfer. Thus, several researchers have been trying to find out if it is applicable for different conditions and geometries [25,26].…”

Section: Introductionmentioning

confidence: 99%

New correlation for Nusselt number of nanofluid with Ag / Al 2 O 3 / Cu nanoparticles in a microchannel considering slip velocity and temperature jump by using lattice Boltzmann method

Karimipour

2015

International Journal of Thermal Sciences

129

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Section: Introductionmentioning

confidence: 99%

New correlation for Nusselt number of nanofluid with Ag / Al 2 O 3 / Cu nanoparticles in a microchannel considering slip velocity and temperature jump by using lattice Boltzmann method

Karimipour

2015

International Journal of Thermal Sciences

129

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“…It is proved that the lattice BGK method is consistent with the Navier-Stokes equation for fluid flow through ChapmanEnskog expansion (Benzi et al, 1992). As a flexible and effective numerical method, it finds increasing applications in simulating complex flow, heat, and mass transfer problems (Chen and Doolen, 1998;Xuan et al, 2007;Li et al, 2005;Orazio et al, 2003). An important advantage of the lattice Boltzmann method is that it can simulate the interfacial force between the two different phases conveniently and catch the interface of the two different phases clearly.…”

Section: Multiphase Lattice Boltzmann Modelmentioning

confidence: 99%

Transient Modeling of CPL Based on Mesoscaled Analysis by Lattice Boltzmann Method

Xuan

Zhao

Li³

2010

Frontiers in Heat Pipes

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A transient model of a Capillary Pumped Loop (CPL) is proposed to predict the thermal and dynamic behavior, which includes two coupled modules: the thermal model and the hydrodynamic module. The thermal module is based on the nodal method and the dynamic module of the liquidvapor interface is based on the molecular kinetic theory. Especially, a thermal non-equilibrium model is proposed to predict the temperature of evaporator, which is unlike some traditional numerical method associate with the CPL system. In the present model, vapor is treated as a compressible phase, so an equation of state (EOS) should be used to complete the controlling equations. A mesoscaled multiphase lattice Boltzmann model (LBM) is proposed to analyze the different working fluids, which can help us to choose appropriate EOS. Combining these two models for different scale, the behavior of ammonia is analyzed by the LBM. The processes such as the start-up, the temperature oscillations in the reservoir and the heat load change in the evaporator are investigated by the transient model of a whole CPL. The numerical results of the LBM show that the PengRobinson (P-R) equation is more appropriate for the ammonia and the results of the macroscopic transient model show that why the start-up of a CPL becomes a failure easily and temperature oscillations in the reservoir are disadvantageous to the operation of CPL. With this new mixed algorithm, the mesoscaled behavior of the working fluid and the operation mechanism of a whole CPL can be investigated in detail, which can provide guidance for the design of a CPL system.

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“…It is proved that the lattice BGK method is consistent with the Navier-Stokes equation for fluid flow through Chapman-Enskog expansion (Benzi et al 1992). As a flexible and effective numerical method, it finds increasing applications in simulating complex flow, heat, and mass transfer problems (Qian et al 1995;Chen and Doolen 1998;Xuan et al 2007;Li et al 2005;Orazio et al 2003;He et al 1998). An important advantage of the lattice Boltzmann method is that the complex geometry boundary conditions, such as porous structure, curved boundaries can be conveniently incorporated into the numerical model (McClure et al 2010;Jeong 2010;Zhao et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Investigation on Heat and Mass Transfer in a Evaporator of a Capillary-Pumped Loop with the Lattice Boltzmann Method: Pore Scale Simulation

Xuan

Zhao

2011

Transp Porous Med

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A two-dimensional transient numerical model based on the lattice Boltzmann method (LBM) for the global evaporator of a capillary-pumped loop (CPL) is proposed to describe heat and mass transfer with evaporation in the porous wick, heat conduction in the cover plate, and heat transfer in the vapor groove. To indicate the stochastic phase distribution characteristics of most porous wick, the quartet structure generation set (QSGS) is introduced for generating more realistic microstructures of porous media. By using the present lattice Boltzmann algorithm along with the porous structure, the heat and mass transfer of an evaporator on pore scale can be predicted without resorting to any empirical parameters determined case by case. The energy equations for entire evaporator are solved as a conjugate problem, which are solved by means of a spatially varying relaxation time in the lattice Boltzmann model and the liquid flow is driven via the interfacial mass flux. A convective boundary condition considering the latent heat during the evaporation on the interface is introduced into the lattice Boltzmann model based on the nonequilibrium extrapolation rule. Especially, the bounce-back rule and the equilibrium rule of the LBM are, respectively, introduced to deal with the momentum boundary conditions inside the porous wick and on the evaporation interface in order to ensure the stability and the efficiency of the LBM model. Numerical results corresponding to different working conditions and different working fluids are presented, which provide guidance for the evaporator design of a CPL system.

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Investigations of convective heat transfer in ferrofluid microflows using lattice-Boltzmann approach

Cited by 83 publications

References 22 publications

New correlation for Nusselt number of nanofluid with Ag / Al 2 O 3 / Cu nanoparticles in a microchannel considering slip velocity and temperature jump by using lattice Boltzmann method

New correlation for Nusselt number of nanofluid with Ag / Al 2 O 3 / Cu nanoparticles in a microchannel considering slip velocity and temperature jump by using lattice Boltzmann method

Transient Modeling of CPL Based on Mesoscaled Analysis by Lattice Boltzmann Method

Investigation on Heat and Mass Transfer in a Evaporator of a Capillary-Pumped Loop with the Lattice Boltzmann Method: Pore Scale Simulation

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