The ANZIAM Journal

Research Article

COMBINED NATURAL CONVECTION COOLING OF A DRINK CAN

S. JIRACHEEWANUNa1a2 c1, S. W. ARMFIELDa1 and M. BEHNIAa1

a1 School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney, New South Wales, Australia (email: sujin.jir@kmutt.ac.th, armfield@aeromech.usyd.edu.au, m.behnia@usyd.edu.au)

a2 Department of Mechanical Technology Education, King Mongkut’s University of Technology Thonburi, Bangkok, Thailand

Abstract

We investigate natural convection cooling of the fluid in a drink can placed in a refrigerator by simulating the full combined boundary layer system on the can wall. The cylindrical can is filled with water at initial nondimensional temperature 0, and located within a larger cylindrical container filled with air at initial temperature −1. The outer container walls are maintained at constant temperature −1. Initially both fluids are at rest. Two configurations are examined: the first has the inner can placed vertically in the middle of the outer container with no contact with the outer container walls, and the second has the inner can placed vertically at the bottom of the outer container. The results are compared to those obtained by assuming that the inner can walls are maintained at a constant temperature, showing similar basic flow features and scaling relations, but with very different proportionality constants.

(Received January 31 2010)

(Revised December 15 2010)

(Online publication March 25 2011)

2000 Mathematics subject classification

  • primary 80A20

Keywords and phrases

  • natural convection cooling;
  • conjugate boundary layer

Correspondence:

c1 For correspondence; e-mail: sujin.jir@kmutt.ac.th