Boundary layers in stochastic thermodynamics

Optimal processes in Stochastic Thermodynamics

Instabilities in turbulent boundary layers

An investigation of a model of turbulence generation in the wall region of a turbulent boundary layer is made through direct numerical simulations. The model is based on the instability of a streak. First, a laminar boundary layer disturbed by a continuous blowing through a slot is simulated in order to reproduce and further investigate the results reported from the experiments of Acarlar & Smi...

B 5 Stochastic thermodynamics

2 Principles 4 2.1 Stochastic dynamics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 First law . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.3 Entropy production . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.4 Jarzynski relation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.5 Optimal finite-t...

Entropy boundary layers

We consider the Euler system of compressible and entropic gaz dynamics in a bounded open domain of R with wall boundary condition. We prove the existence and the stability of families of solutions which correspond to a ground state plus a large entropy boundary layer. The ground state is a solution of the Euler system which satisfies some explicit additional conditions on the boundary. These co...

Applied Thermodynamics: Grain Boundary Segregation

Chemical composition of interfaces—free surfaces and grain boundaries—is generally described by the Langmuir–McLean segregation isotherm controlled by Gibbs energy of segregation. Various components of the Gibbs energy of segregation, the standard and the excess ones as well as other thermodynamic state functions—enthalpy, entropy and volume—of interfacial segregation are derived and their phys...