Scaling analysis of natural convection boundary layers

The natural convection thermal boundary layer adjacent to an inclined flat plate and inclined walls of an attic space subject to instantaneous and ramp heating and cooling is investigated. A scaling analysis has been performed to describe the flow behaviour and heat transfer. Major scales quantifying the flow velocity, flow development time, heat transfer and the thermal and viscous boundary layer thicknesses at different stages of the flow development are established. Scaling relations of heating-up and cooling-down times and heat transfer rates have also been reported for the case of attic space. The scaling relations have been verified by numerical simulations over a wide range of parameters. Further, a periodic temperature boundary condition is also considered to show the flow features in the attic space over diurnal cycles.

Autorentext

Dr. Suvash C. Saha received his BSc (Hons) in Maths and MSc in Applied Maths from University of Dhaka. He obtained his PhD in CFD from James Cook University, Australia. He is currently working as a Postdoctoral fellow at Queensland University of Technology, Australia. He has over 30 publications, two book chapters & several conference proceedings.