arXiv subjects

M Ponmurugan

Publications and source records attributed to M Ponmurugan.

2 recordsLinked to original sources

arXiv2019

Heat engine model exhibit super-universal feature and capture the efficiencies of different power plants

We propose a generalized model of a heat engine and calculate the minimum and maximum bounds on the efficiency at maximum power. We obtain a universal form of generalized extreme bounds on the efficiency at maximum power. Our model unifies the bounds on the efficiency and the universality features are observed for various heat engine models. Even though our model is a direct generalization of low-dissipation heat engines, the bounds on the efficiency obtained at a single target function capture those observed in the actual power plants working at different dissipation levels.

cond-mat.stat-mech↗

arXiv2010

An on-the-fly approach optimized switching: A special case of free energy simulation under nonequilibrium feedback control

We discuss the optimized switching free energy simulations in an analogy with the systems which are driven under nonequilibrium feedback control. We find an on-the-fly simulation approach of switching optimization is a special case of the nonequilibrium process under feedback control. In this approach, the switching rate is allowed to vary during the simulation and the optimization is done on-the-fly by utilizing the part of the simulation outcomes as the feedback information. In such a case, one should use generalized Jarzynski equality under nonequlilibrium feedback control for free energy calculation instead original Jarzynski equality.

cond-mat.stat-mech↗