Search Results - subject:"Thermodiffusion"

Gauge-invariant approach to thermodiffusion in a liquid binary mixture

Bringuier, E. - In: Physica A: Statistical Mechanics and its Applications 390 (2011) 11, pp. 1861-1875

The paper aims at a molecular understanding of thermodiffusion (the Ludwig–Soret effect) in a liquid binary mixture. To … thermodiffusion. The force driving thermodiffusion arises from Onsager’s reciprocity theorem in non-equilibrium thermodynamics: it is … explicit kinetic expression is given of the force driving thermodiffusion; it involves the interaction cross-section of the two …

Persistent link: https://www.econbiz.de/10010591077

Thermodiffusion of rigid particles in pure liquids

Lhuillier, Daniel - In: Physica A: Statistical Mechanics and its Applications 390 (2011) 7, pp. 1221-1233

Thermodiffusion of particles suspended in a pure liquid is a thorny problem which has not yet received a solution … relative to the carrier fluid. Focussing on thermodiffusion, we show that the osmotic pressure is irrelevant and that … thermodiffusion cannot have but two distinct origins : the temperature dependence of the stress associated with the distorted particle …

Persistent link: https://www.econbiz.de/10010591840

Scaling theory of polymer thermodiffusion

Bringuier, E. - In: Physica A: Statistical Mechanics and its Applications 389 (2010) 21, pp. 4545-4551

thermodiffusion of polymers and is shown to account for (i) the existence of both signs of the thermodiffusion coefficient of long …

Persistent link: https://www.econbiz.de/10010589659

Thermodiffusion: From kinetics to stochastics

Debbasch, F.; Rivet, J.P. - In: Physica A: Statistical Mechanics and its Applications 389 (2010) 10, pp. 2048-2062

The Boltzmann transport equation is used to obtain new effective stochastic descriptions of dilute gas diffusion in presence of temperature gradients. It is found that temperature gradients not only introduce a thermophoresis force, but also substantially modify the friction and noise acting on...

Persistent link: https://www.econbiz.de/10010874496

Kinetic theory of colloid thermodiffusion

Bringuier, E.; Bourdon, A. - In: Physica A: Statistical Mechanics and its Applications 385 (2007) 1, pp. 9-24

The Kramers’ equation of Brownian motion is applied to investigate the motion of a colloidal particle in a medium subjected to a temperature gradient. The equation is generalized in two ways. First, a chemical force is included in order to account for the non-ideality of the colloidal...

Persistent link: https://www.econbiz.de/10010873727

Fluctuation theory for transport properties in multicomponent mixtures: thermodiffusion and heat conductivity

Shapiro, A.A. - In: Physica A: Statistical Mechanics and its Applications 332 (2004) C, pp. 151-175

diffusion coefficients, is extended onto thermodiffusion coefficients and heat conductivities. The derivation of the expressions …

Persistent link: https://www.econbiz.de/10010588957