Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Free Convection Heat Transfer from Two Equal Triangular Cylinders Confined in Triangular Enclosure

Version 1 : Received: 18 January 2021 / Approved: 20 January 2021 / Online: 20 January 2021 (09:50:26 CET)

How to cite: Laidoudi, H. Free Convection Heat Transfer from Two Equal Triangular Cylinders Confined in Triangular Enclosure. Preprints 2021, 2021010394 (doi: 10.20944/preprints202101.0394.v1). Laidoudi, H. Free Convection Heat Transfer from Two Equal Triangular Cylinders Confined in Triangular Enclosure. Preprints 2021, 2021010394 (doi: 10.20944/preprints202101.0394.v1).

Abstract

This paper studied the natural convection heat transfer from two equal-sized cylinders of triangular cross-section confined in triangular enclosure. The inner cylinders have hot surfaces and the outer enclosure has a cold surfaces. The annular space between inner cylinders and the outer one was filled with incompressible Newtonian fluid. The work examined the behavior of fluid flow in the process of transferring heat energy. The work was achieved numerically using the commercial code ANSYS-CFX. The adopted initial conditions were selected for these ranges: Prantl number (Pr = 1 to 103), Rayleigh number (Ra = 103 to 105). It was found that the increment of Ra number increases the rate of heat transfer. However, the effect of Pr number on heat transfer is almost negligible.

Subject Areas

Triangular cylinders; buoyancy-driven flow; annulus; ANSYS-CFX; cold enclosure

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