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Natural Convection Cooling of a Vacuum Flask

Application 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.

This application was built using the following:

Heat Transfer Module

The combination of COMSOL® products required to model your application depends on the physics interfaces that define it. Particular physics interfaces may be common to several products (see the Specification Chart for more details). To determine the right combination of products for your project, you should evaluate all of your needs in light of each product\'s capabilities, consultation with the COMSOL Sales and Support teams, and the use of an evaluation license.