INSTITUTO ARGENTINO DE NIVOLOGIA, GLACIOLOGIA Y CIENCIAS AMBIENTALES
Unidad Ejecutora - UE
Entropy production in a heat conduction problem
MIRANDA, E. N.
REVISTA BRASILEIRA DE ENSINO DE FISICA - (Print)
SOC BRASILEIRA FISICA
Lugar: SAN PABLO; Año: 2016 vol. 38 p. 4303 - 4303
Heatconduction along an isolated bar placed between two reservoirs at differenttemperatures is studied. The entropy production is considered in detail withtwo different approaches. In the first one, the whole system (the bar and thetwo reservoirs) is analysed in the steady state with the help of standardthermodynamics. In the second one, the bar is divided into n cells and a simple finite difference method is used to evaluatethe time evolution of the entropy production. This approach is useful becausethe transient behaviour can be studied. In this way, it is shown a simpleexample of a non-equilibrium system where the entropy production (even itstransient behaviour) can be evaluated with tools at hand of a motivatedundergraduate.