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Corresponding Author

Elgafy, Ahmed

Subject Area

Mechanical Power Engineering

Article Type

Original Study

Abstract

In the present work a numerical study based on discrete multiphase approach, Lagrangian approach, is proposed to investigate and predict the trajectories of nanoparticles- filled fluid (nanofluid) infiltrated around a staggered microfiber matrix. The trajectory of the nanoparticle has been predicted by integration the force balance on it in a Lagrangian references frame during its motion through the fluid. The governing integral equations for the conservation of mass, momentum and energy have been solved in a segregated numerical fashion by a Control-Volume-Based Finite-Element Method. The nanoparticles trajectories and their interactions with fluid flow and microfiber walls have been predicted showing undesirable sticking tendency of the nanoparticles on the microfiber walls. To avoid this tendency, the contribution of Marangoni shear stress has been introduced coupled with a temperature difference between the fluid flow and the microfiber walls.

Keywords

Nanoparticles; Lagrangian approach; Trajectories; Solid/liquid interaction

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