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Tytuł artykułu

Pressure drops in convergent flows of polymer melts

Wybrane pełne teksty z tego czasopisma
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Practical moulding processes of polymer melts involve geometrically complex dies. Such dies are usually tapered or streamlined as e.g. wedge or conical dies, to achieve maximum output rate under conditions of laminar flow. The models of generalized second grade fluids of a Shulman type are used and the results obtained are illustrated by examples of conical and wedge flows of power-law type and Bingham type fluids and the formulae for pressure drops were presented.
Rocznik
Strony
1273--1285
Opis fizyczny
Bibliogr. 22 poz., wykr.
Twórcy
autor
autor
  • University of Zielona Góra, Faculty of Mechanical Engineering ul. Szafrana 2, P.O.Box 47, 65-516 Zielona Góra, POLAND
Bibliografia
  • Adams M.J., Edmondson B., Conghey D.G. and Yahua R. (1994): Anexperimental and theoretical study of the squezze-film deformatin and flow of elastoplastic fluids. - J. Non-Newt. Fluid Mech., vol.51, pp.61-78.
  • Agassant J.F., Avenas P., Sergent J., Vergnes B. and Vincent M. (1996): La Mise en Forme des Matieres Plastiques. - Paris: Lavoisier.
  • Avenas P., Agassant J. F. and Sergent J. Ph. (1982): La Mise en Forme des Matieres Plastiques. - Paris, Tec-Doc. Lavoisier.
  • Binding D.M. (1988): An approximate analysis for contraction and converging flows. - J. Non-Newt. Fluid Mech., vol.27, pp.173-189.
  • Cogswell F.N. (1972): Converging flow of polymer melts in extrusion dies. - Polym. Engng Sci., vol.12, pp.64.
  • Cogswell F.N. (1978): Converging flow and stretching flow: a compilation. - J. Non-Newt. Fluid Mech., vol.4, pp.23.
  • Eckmann J.M., Wildman D.J. and Chen J.L.S. (1986): Laminar flow studies of highly loaded suspensions in horizontal pipes. - Second Int. Symp. Slurry flows, ASME FED, 38, 85-92.
  • Rivlin R.S. and Ericksen J.L. (1955): Stress deformation relations for isotropic materials. - J. Rat. Mech. Anal., vol.4, pp.323.
  • Shulman Z.P. (1975): Convective heat transfer of rheologically complex fluids (in Russian). - Energy Moscow.
  • Walicka A. (2002a): Rheodynamics of Non-Newtonian Fluids Flow in Straight and Curved Channels (in Polish). ( Zielona Gora: University Press.
  • Walicka A. (2002b): Rotational flows of rheological complex media in narrow annular channels (in Russian). - Zielona Góra: University Press.
  • Walicki E. and Walicka A. (1994): An approximate analysis for conical flow of viscoplastic fluids. - Reports, T.U. Zielona Góra, Fizyka-Chemia, No 6(7, pp.197-217.
  • Walicki E. and Walicka A. (1995): Pressure drops in conical flow of a molten metal. - Solid. Metals Alloys, Proc. Conf. "Foundry '95", No.24, pp.147.
  • Walicki E. and Walicka A. (1998a): Basic flows of generalized second grade fluids. - XIX Symp. on Rheology of RAS, Klaipeda, 22-27 June, Coll. Abstracts, 1998, 78-79.
  • Walicki E. and Walicka A. (1998b) Flows of generalized second grade fluids in a circular pipe. - Les Cahiers de Rhéologie, vol.16, pp.317-324.
  • Walicki E. and Walicka A. (1999): Flows of generalized second grade fluids in rectilinear channels. - Applied Mechanics and Engineering, vol.4, No.2, pp.375-395.
  • Walicki E. and Walicka A. (2000a): Conical flow of generalized second grade fluids. - Chemical and Process Engineering, vol.21, No.1, pp.75-85.
  • Walicki E. and Walicka A. (2000b): Pressure drops in a wedge flow of generalized second grade fluids of a power-law type and a Bingham type. - Les Cahiers de Rhéologie, vol.17, No.1, pp.541-550.
  • Walicki E., Walicka A., Michalski D., (1997): Analysis of a molten metal flow in the conical die. - Proc. of VIII Nat. Conf.: Tendencies in Manufacturing Processes, Zielona Góra, 16-18 Sept., 1997, pp.175-185.
  • Walicki E., Walicka A. and Ratajczak P. (1998a): Flow of a generalized second grade fluid in the circular cross-section conduit. - Proc. Nat. Conf.: VI Forum of Power Engineers, Opole, 8-10 June, 1998, pp.371-375.
  • Walicki E., Walicka A. and Michalski D. (1998b): Pressure drops in the conical flow of a molten metal. - Proc.5th European Rheology Conference, Portorož (Slovenia), 6-11 Sept. 1998, pp.169-170.
  • Walicki E., Walicka A., Michalski D. and Ratajczak P. (1998c): Approximate analysis for conical flow of generalized second grade fluids. - Les Cahiers de Rhéologie, vol.16, pp.309-316.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPZ5-0015-0021
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