Natural Convection Cooling of a Vacuum Flask

Model ID: 1448


The following example solves a pure conduction and a free-convection problem in which a vacuum flask holding hot coffee dissipates thermal energy. The main interest is to calculate the flasks cooling power; that is, how much heat it loses per unit time. This example treats the natural convection cooling using two approaches:
• Using heat transfer coefficients to describe the thermal dissipation
• Modeling the buoyancy driven flow of air outside the flask to describe the convective cooling.