Rectification of thermal fluctuations in ideal gases.
We calculate the systematic average speed of the adiabatic piston and a thermal Brownian motor, introduced by C. Van den Broeck, R, Kawai and P. Meurs [Phys. Rev. Lett. 93, 090601 (2004)], by an expansion of the Boltzmann equation and compare with the exact numerical solution.
Meurs
P
P
Limburgs Universitair Centrum, B-3590 Diepenbeek, Belgium.
Van den Broeck
C
C
Garcia
A
A