ISSN Online: 2688-7231
ISBN Online: 978-1-56700-524-0
Proceedings of the 26thNational and 4th International ISHMT-ASTFE Heat and Mass Transfer Conference December 17-20, 2021, IIT Madras, Chennai-600036, Tamil Nadu, India
Influence of Central Angle on Buoyancy Driven Thermal Flow Behaviours inside a Circular Porous Enclosure Heating from below
Resumo
Study of buoyancy actuated heat transfer characteristics
inside an air saturated porous structure circular enclosure has
been numerically analyzed thoroughly. Influences of central
angle and the Darcy number on the natural convection are
examined in the present work. The transport conservative
equations are solved with the help of Ansys fluent, a
commercial software. The velocity and pressure terms present
in the continuity and momentum equations are coupled with the
help of SIMPLE algorithm. In order to model the porous
structure and body force term, the user defined function (UDF)
is pertained. The central angle (φ) is varied from 15° to 45° and Da is varied from 10-4 to 10-1. One important finding from the study is the critical Da, beyond which convection leading heat transfer inside the cavity reduces with the increase in central angle. The magnitude of vortex strength improves with the inclination angle.