Accession Number : ADA259901


Title :   Maxwell's Demon, Rectifiers, and the Second Law: Computer Simulation of Smoluchowski's Trapdoor


Descriptive Note : Memorandum rept.


Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE ARTIFICIAL INTELLIGENCE LAB


Personal Author(s) : Skordos, P A ; Zurek, W H


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a259901.pdf


Report Date : Sep 1991


Pagination or Media Count : 23


Abstract : We have simulated numerically an automated Maxwell's demon inspired by Smoluchowski's ideas of 1912. Two gas chambers of equal area are connected via an opening that is covered by a trapdoor. The trapdoor can open to the left but not to the right, and is intended to rectify naturally occurring variations in density between the two chambers. Our results confirm that though the trapdoor behaves as a rectifier when large density differences are imposed by external means, it can not extract useful work from the thermal motion of the molecules when left on its own.


Descriptors :   *MATHEMATICAL MODELS , *COMPUTERIZED SIMULATION , *DOORS , *HEAT ENGINES , *ENERGY CONVERSION , *TRAYS , SIMULATION , DENSITY , ARTIFICIAL INTELLIGENCE , WORK , OPENINGS , RECTIFIERS , CHAMBERS , HEAT , EXTERNAL , ENGINES , MOLECULES , MOTION , VARIATIONS


Subject Categories : Thermodynamics


Distribution Statement : APPROVED FOR PUBLIC RELEASE