Presentazioni e Articoli Tecnici

Heating or cooling of stored fluids by thermal energy exchange with the enclosing walls may be enhanced by improving the efficiency of energy transfer; energy loss to the ambient is equalized for all simulations. Buoyancy driven internal natural convective flow is assumed to be the main energy transfer mechanism. In Newtonian fluids dynamic behaviour is described by the Navier-Stokes equations.

Based on COMSOL Multiphysics Heat Transfer and Fluid Flow models, the following design parameters are investigated: positioning of heating or cooling power elements, operation mode of energy transfer (e.g. pulsed) and container wall shape. An analysis how a combination of these design parameters may affect an effective internal convective flow is the outcome of this simulation program.