Experimental studies of interfacial instabilities in multilayer pressure-driven flow of polymeric melts

Rheologica Acta

Volumn 36, Issue 4, 1997, Pages 345-366

  Khomami, Bamin ^a   Ranjbaran, Mohammad M ^a  

^a WASHINGTON UNIVERSITY IN ST LOUIS   (United States)

Author keywords

Encapsulation phenomenon; Flow visualization; Interfacial stability; Multilayer flow; Viscoelastic flow

Indexed keywords

FLOW; INSTABILITY; INTERFACE; POLYMER; VISCOELASTIC FLUID;

FLOW VISUALIZATION; FLUID FLOW; INTERFACIAL INSTABILITIES; VISCOELASTIC FLUIDS;

EID: 0030702818     PISSN: 00354511     EISSN: None     Source Type: Journal    
DOI: 10.1007/BF00396323     Document Type: Article

References (23)

1. Avgousti M, Beris AN (1993) Non-axisymmetric modes in viscoelastic Taylor-Couette flow. J Non-New Fluid Mech 50:225
2. Boger DV, Binnington RJ (1994) Experimental removal of the re-entrant corner singularity in tubular entry flows. J Rheol 38:333
3. Byars JA, Oztekin A, Brown RA, McKinley GH (1994) Spiral instabilities in the flow of highly elastic fluids between rotating parallel disks. J Fluid Mech 274:173
4. Chen K (1991) Elastic instabilities of the interface in Couette flow of viscoelastic liquids. J Non-Newt Fluid Mech 40:261
5. Ganpule HK, Khomami B (1994) Interfacial instabilities in superposed flow of viscoelastic fluids: effect of shear rate dependent viscosity and normal stresses. Proceedings of the 7th Australian National Conference on Rheology, Brisbane, Australia
6. Han CD (1978) Studies on multilayer film extrusion. Polym Eng Sci 18:180
7. Han CD, Kim YJ, Chin HB (1984) Rheological investigation of interfacial instabilities in two-layer flat film coextrusion. Polym Eng Reviews 178
8. Joseph DD, Nguyen K, Beavers GS (1984) Non-uniqueness and stability of the configuration of flow of immiscible fluids with different viscosities. J Fluid Mech 141:319
9. Karagiannis A, Hrymak AN, Vlachopoulos J (1990) Three-dimensional studies on bicomponent extrusion. Rheol Acta 29:71
10. Khomami B, Wilson GM (1995) An experimental investigation of interfacial instability in superposed flow of viscoelastic fluids in a converging/diverging channel geometry. J Non-Newt Fluid Mech 58:47
11. Larson RG, Shaqfeh ESG, Muller SJ (1990) A purely viscoelastic instability in Taylor-Couette flow. J Fluid Mech 218:573
12. Larson RG (1992) Instabilities in viscoelastic flows. Rheol Acta 31:213
13. Lee B, White JL (1974) An experimental study of rheological properties of polymer melts in laminar shear flow and of interface deformation and its mechanism in two-phase stratified flow. Trans Soc Rheol 18:467
14. McKinley GH, Raiford WP, Brown RA, Armstrong RC (1991) Nonlinear dynamics of viscoelastic flow in axisymmetric abrupt contractions. J Fluid Mech 223:411
15. Renardy Y (1988) Stability of the interface in two-layer Couette flow of upper convected Maxwell liquids. J Non-Newt Fluid Mech 28:99
16. Renardy Y (1995) Weakly nonlinear behavior of periodic disturbances in two layer plane channel flow of upper-convected Maxwell liquids. J Non-Newt Fluid Mech 56:101
17. Shaqfeh ESG, Muller SJ, Larson RG (1992) The effect of gap width and dilute solutions properties on the Taylor-Couette viscoelastic instability. J Fluid Mech 235:285
18. Shaqfeh ESG (1996) Purely elastic instabilities in viscometric flows. Ann Rev Fluid Med 28:129
19. Su YY, Khomami B (1992a) Purely elastic interfacial instabilities in superposed flow of polymeric fluids. Rheol Acta 31:413
20. Su YY, Khomami B (1992b) Interfacial stability of multilayer viscoelastic fluids in a slit and converging die geometry. J Rheol 36:357
21. Wilson GM, Khomami B (1992) An experimental investigation of interfacial instabilities in multilayer flow of viscoelastic fluids: Part I. Incompatible polymer systems. J Non-Newt Fluid Mech 41:355
22. Wilson GM, Khomami B (1993a) An experimental investigation of interfacial instabilities in multilayer flow of viscoelastic fluids: Part II. Elastic and nonlinear effects in incompatible polymer systems. J Rheol 37:315
23. Wilson GM, Khomami B (1993b) An experimental investigation of interfacial instabilities in multilayer flow of viscoelastic fluids: Part III. Compatible polymer systems. J Rheol 37:341