Heat Transfer Enhancement of Cu-H₂O Nanofluid with Internal Heat Generation Using LBM

Mohammad Abu Taher, Yeon Won Lee, Heuy Dong Kim

School of Mechanical Engineering, Andong National University, Andong, South Korea.
School of Mechanical Engineering, Pukyong National University, Busan, South Korea.

DOI: 10.4236/ojfd.2013.32A015                

Abstract

Fluid flow and heat transfer analysis of Cu-H₂O nanofluid in a square cavity using a Thermal Lattice Boltzmann Method (TLBM) have been studied in the present work. The LBM has built up on the D2Q9 model and the single relaxation time method called the Lattice-BGK (Bhatnagar-Gross-Krook) model. The effect of suspended nanoparticles on the fluid flow and heat transfer analysis have been investigated for different non dimensional parameters such as particle volume fraction (φ) and particle diameters (dp) in presence of internal heat generation (q) of nanoparticles. It is seen that flow behaviors and the average rate of heat transfer in terms of the Nusselt number (Nu) as well as the thermal conductivity of nanofluid are effectively changed with the different controlling parameters such as particle volume fraction (2% ≤ φ ≤ 10%), particle diameter (dp = 5 nm to 40 nm) with fixed Rayleigh number, Ra = 105. The present results of the analysis are compared with the previous experimental and numerical results for both pure and nanofluid and it is seen that the agreement is good indeed among the results.

Keywords

Nanofluid; Lattice-Boltzmann; Volume Fractions; Particle Diameter; Heat Generation

Conflicts of Interest

The authors declare no conflicts of interest.

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