Numerical Simulation of Laminar Nanofluids Flow in a Curved Duct with a Square Cross-section

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Asadi Boroojeni Behrooz; Khosravi Farsani Ayoub

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Journal Paper

Paper Information

Journal: Karafan Year:2024 | Volume:21 | Issue:1 Page(s): 411-433

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Information Journal Paper

Title

Numerical Simulation of Laminar Nanofluids Flow in a Curved Duct with a Square Cross-section

Author(s)

Asadi Boroojeni Behrooz | Khosravi Farsani Ayoub

Keywords

Laminar Flow

Nusselt Number

curved tube

Pressure drop

heat transfer

Abstract

In this article, the forced displacement heat transfer of nanofluid flow in horizontal curved tubes with a four-sided cross-section, under heat flux, was numerically simulated. A homogeneous nanofluid of aluminium oxide particles and water was used as the base fluid. Continuity, momentum and energy equations and the control volume method were used to numerically solve the flow. In this study, the effects of secondary flows, centrifugal force, and buoyancy on the flow field were considered, and the effect of the Reynolds number, volume fraction of nanoparticles and the effect of the curved surface in different geometries on the amount of heat transfer and Pressure drop were investigated. The results are presented in the contour of flow and temperature parallel lines as well as Nusselt Number and pressure graphs. heat transfer and Pressure drop in different concentrations of solid particles and different Reynolds numbers were compared. The results demonstrated that by increasing the volume fraction of solid particles from 0 to 5%, the heat transfer increased by up to 10% and the Pressure drop increased by 100%. In addition, by increasing the Reynolds number from 100 to 900, the heat transfer and Pressure drop inside the elbow increased by up to two times. According to the results, the concave surface from inside the tube has a greater effect on heat transfer than the convex surface.

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