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Titolo: PHASETRANSITIONS OF FLUIDS IN SHEARFLOW
Autore: ONUKI A;
 Indirizzi:
 KYOTO UNIV,DEPT PHYS KYOTO 606 JAPAN
 Titolo Testata:
 Journal of physics. Condensed matter
fascicolo: 29,
volume: 9,
anno: 1997,
pagine: 6119  6157
 SICI:
 09538984(1997)9:29<6119:POFIS>2.0.ZU;2K
 Fonte:
 ISI
 Lingua:
 ENG
 Soggetto:
 BINARYLIQUID MIXTURE; INDUCED CONCENTRATION FLUCTUATIONS; ENHANCED CONCENTRATION FLUCTUATIONS; PERIODIC SPINODAL DECOMPOSITION; SEMIDILUTE POLYMERSOLUTIONS; ANGLE NEUTRONSCATTERING; TOLAMELLAR TRANSITION; STEADYSTATE SHEAR; CRITICALPOINT; LIGHTSCATTERING;
 Tipo documento:
 Review
 Natura:
 Periodico
 Settore Disciplinare:
 Science Citation Index Expanded
 Citazioni:
 244
 Recensione:
 Indirizzi per estratti:



 Citazione:
 A. Onuki, "PHASETRANSITIONS OF FLUIDS IN SHEARFLOW", Journal of physics. Condensed matter, 9(29), 1997, pp. 61196157
Abstract
We review theories and experiments on the effects of shear in fluids undergoing phase transitions. We put emphasis on nearcritical fluids and polymer solutions as representative examples, but also discuss related problems in polymer blends, gels, and surfactant systems, etc. Innearcritical fluids, convective deformations can drastically alter the critical behaviour, spinodal decomposition, and nucleation. In thiscase the hydrodynamic interaction suppresses the fluctuations and gives rise to a downward shift of the critical temperature (shearinducedmixing). The rheology in twophase states, and effects of random stirring are also reviewed. In semidilute polymer solutions near the coexistence curve, on the other hand, the composition fluctuations can be strongly influenced by the viscoelastic stress. In shear flow, this dynamical coupling results in enhancement of the composition fluctuations(shearinduced demixing). They grow, but are eventually disrupted by convective deformations, yielding chaotic dynamical steady states where phase separation is incompletely taking place. Such nonlinear shear regimes are examined using computer simulations based on a viscoelastic GinzburgLandau model.
ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/07/20 alle ore 08:57:57