Numerical Modeling of Low Concentration Al2O3/Water Nanofluid Heat Transfer in an Annulus with Two-phase Mixture Method

This series of differential differential equations is discretized by the controlled variable method. The SIMPLE algorithm is used as a pressure-velocity coupling technique and the second windward method is used for convection and diffusion terms. The resulting algebraic system is solved by using Gauss-Seidel on the line passing through all the volumes in the computational domain. Convergence criteria of all parameters are limited to 10-6 or less. In order to obtain higher accuracy, a grid independence investigation of pure water was conducted separately for each model.

In this study, numerical study of hydrodynamic behavior of nanofluid (Fe 3 O 4 - water) in microchannel radiator (MCHS) with bias sector under magnetic field Simulated nanofluid flow using biphasic mixed model did. The flow is assumed to be laminar and stable and incompressible. Consider changing the influence of Reynolds number, power magnetic field and nanoparticle diameter on fluid behavior. The results showed that the coefficient of friction decreased and Nusselt number increased Reynolds number. Whit increases the pressure drop in the strength field, increasing the coefficient of friction and Nusselt number. The results show that the nonuniform magnetic field has a greater influence on the behavior of the nanofluid than the uniform fluid.

Sakanova et al. The influence of the wavy channel structure on hydrodynamic properties of the microchannel radiator was investigated. They found that the effect of adding nanoparticles in pure water to undulating walls is not obvious. Ladone etc. Numerical Study of Heat Transfer Microchannel Heat Sink Using Nanofluid in Low Concentration Photovoltaic System They show that nanofluid is an effective technique for enhancing heat transfer. Tabrizi and Seyf examined the flow of lamellar Al 2 O 3 - water nanofluid in the microchannel heat sink. They show that as the volume fraction of Al 2 O 3 and the size of the nanoparticles are increased, the occurrence of entropy decreases.

Tsai and Chein examined the flow of nanofluid (water - copper and nanotube) in the microchannel heat sink. They discovered that the aspect ratio and the optimum value of the nanofluid are not converted into MCHS thermal resistance. Medical records etc. Laminar flow of nanofluid in rectangular microchannel heat sink was investigated numerically and experimentally. Comparative experiments and numerical results showed that the results of the two - phase Euler - Eulerian method are more consistent with experimental results than single - phase modeling. Reason why Azizi and colleagues studied experimentally. According to reports Nusselt's data reduces pure water like Reynolds number by using nanoparticle camper to reduce Reynolds number and increase heat transfer. Sheikholeslami et al. The heat transfer effect of the nanoparticles in the cavity containing the rectangular heating body was investigated.