Mesoscopic approach for simulating nanofluid flow and heat transfer in a finned multi-pipe heat exchanger

Abstract

Purpose The lattice Boltzmann method is used to simulate the nanofluid flow and heat transfer inside a finned multi-pipe heat exchanger. Design/methodology/approach The heat exchanger is filled with CuO-water nanofluid. The Koo–Kleinstreuer–Li (KKL) model is used to estimate the dynamic viscosity and considering the Brownian motion in the simulation. On the other hand, the influence of nanoparticles’ shapes on the heat transfer rate is considered, and the best efficient shape is selected to be used in the investigation. Findings The Rayleigh number, nanoparticle concentration and the thermal arrangements of internal active fins and bodies are the governing parameters. In addition, the impacts of these two parameters on the nanofluid flow, heat transfer rate, local and total entropy generation and heatline visualization are analyzed, comprehensively. Originality/value The originality of this work is using of lattice Boltzmann method for simulation of nanofluid flow and heat transfer during natural convection in a heat exchanger. Furthermore, influence of the shape of nanoparticles on the thermo-physical properties of nanofluid is analyzed using Koo–Kleinstreuer–Li correlation.

Hydrodynamic and thermal analysis of water, ethylene glycol and water-ethylene glycol as base fluids dispersed by aluminum oxide nano-sized solid particles

“…They studied the effects of the Rayleigh number, fin length, oscillating amplitude, oscillating period, thermal conductivity ratio (fin to fluid) and the non-dimensional Young's modulus. Other research studies can be found in literature (Ghalambaz and Noghrehabadi, 2014; Ghalambaz et al , 2014a, 2014b, 2019; Noghrehabadi et al , 2012a, 2012b, 2012c, 2013a, 2013b, 2014; Mansour et al , 2016; Ahmed et al , 2013; EL-Kabeir et al , 2007; Rashad, 2008; Rashad et al , 2011, 2017a, 2017b; Gorla et al , 2011; Sivasankaran et al , 2016; Liu et al , 2019; Aly and Pop, 2019; Nasrin et al , 2019; Sreedevi et al , 2019; Hayat et al , 2015; Mohammed et al , 2012; Makinde (2013); Şenay et al , 2019; Prakash and Agrawal, 2016; Rajesh et al , 2017; Khamis et al , 2015; Alsabery et al , 2019; Vemula et al , 2016; Fornalik-Wajs et al , 2019; Sun and Pop, 2014; Malvandi et al , 2017; Thumma et al , 2017; Rawat et al , 2019; Venkateswarlu et al , 2019a, 2019b). In these research works, different nanofluid parameters and various numerical and experimental models were addressed.…”

Research on the characteristics of fluid flow and heat transfer of Al2O3-water nanofluid in an L-shaped chaotic channel

“…In a multi-pipe heat exchanger, Liu et al (2019) simulated the natural convection heat transfer of nanofluid using the lattice Boltzmann method and obtained the optimal pipe arrangement using Nusselt number and entropy generation as target parameters. Khanlari et al (2020) experimentally studied the performance of counter and parallel flow concentric tube heat exchangers.…”

“…Tohidi et al (2014) numerically analyzed the influences of nanofluid on heat transfer in the C-shaped channel, obtained the conclusion that, the heat transfer performance was improved 4%–14% when the concentration of Al 2 O 3 -water nanofluid increased from 1% to 3%, and it was improved 4%–18% when the concentration of CuO-water nanofluid increased from 1% to 3%, without significantly increasing pressure drop. In a multi-pipe heat exchanger, Liu et al (2019) simulated the natural convection heat transfer of nanofluid using the lattice Boltzmann method and obtained the optimal pipe arrangement using Nusselt number and entropy generation as target parameters. Khanlari et al (2020) experimentally studied the performance of counter and parallel flow concentric tube heat exchangers.…”

Dual similarity solutions because of mixed convective flow of a double-nanoparticles hybrid nanofluid: critical points and stability analysis

“…Nanotechnology as a pioneer science nowadays attracts attention of many researchers and authors to its various applicants. For instance, food and agriculture, heat exchangers, solar cells, car radiators, electronics applications, transportation, cooling process in industry and nuclear reactors, human health, miniature technology and drug delivery (Sheikholeslami et al, 2014;Kashani et al, 2019;Dinarvand, 2019;Sheikholeslami et al, 2019;Liu et al, 2019;Kalyane et al, 2019;Aly and Pop, 2019;Hayat et al, 2015;Mohammed et al, 2012). The word "nanofluid" is nominated by Choi (1995).…”