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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
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
shed light on thermodiffusion (the Ludwig–Soret effect), which often combines inhomogeneities of both kinds. Finally, a … limitation of the Lorentz picture of transport in accounting for thermodiffusion is outlined. …
Persistent link: https://www.econbiz.de/10010872718
Experimental investigations on thermophysical properties and forced convective heat transfer characteristics of various nanofluids are reviewed and the mechanisms proposed for the alteration in their values or characteristics due to the addition of nanoparticles are summarized in this review. A...
Persistent link: https://www.econbiz.de/10010664473
A recently modified formulation of fluid-mechanical transport processes, which has been shown to correctly predict the thermophoretic force on a rigid isolated particle in a single-component fluid continuum (gas or liquid), is combined with steady-state Stokes–Einstein-type...
Persistent link: https://www.econbiz.de/10010590622
presence of temperature gradients. It is found that temperature gradients not only introduce a thermophoresis force, but also … compared with each other and with the thermophoresis force. …
Persistent link: https://www.econbiz.de/10010874496
diffusion coefficients, is extended onto thermodiffusion coefficients and heat conductivities. The derivation of the expressions …
Persistent link: https://www.econbiz.de/10010588957
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
The Onsager–Casimir reciprocal relations obtained for gaseous systems on the basis of the linearized Boltzmann equation in a general form [F. Sharipov, Onsager–Casimir reciprocal relations based on the Boltzmann equation and gas–surface interaction law. Single gas., Phys. Rev. E 73 (2006)...
Persistent link: https://www.econbiz.de/10010874665
A purely continuum theory for the thermophoretic velocity of aerosol and hydrosol particles in the zero Knudsen number, near continuum limit, Kn=0+, valid for both gases and liquids, is proposed. This theoretical result is based upon a fundamentally modified version of the traditional equations...
Persistent link: https://www.econbiz.de/10010871980