Pressure drops in the flow through an annular die of a polymer modelled by a Herschel-Bulkley fluid

• Autorzy: Michalski D. , Walicki E. , Walicka A. , Jurczak P.
• Konferencja: Third International Conference on Engineering Rheology, ICER 2005
• Języki publikacji: EN

Abstrakty

EN

Technologies applied in polymer processing require permanent improvement by better recognition of material properties of polymer, mechanisms of process and physical phenomena arising in processing. In the work a polymer flow in an annular die modelled as narrow clearance between two fixed surfaces of revolution is considered. The problem is described by boundary layer equations. Using the method of averaged inertia one obtains the formulae expressing the pressure distribution. Generally, the flow of polymer given by the nonlinear model of Shulman is considered. The molten polymer modelled by a Herschel-Bulkley model flowing through an annular spherical channel is discussed in detail.

Słowa kluczowe

EN

annular spherical channel; viscoplastic fluid; Herschel-Bulkley fluid; pressure decrease

PL

materiałoznawstwo; płyn Herschela-Bulkley'a; spadek ciśnienia

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2005
• Tom: Vol. 10, no spec
• Strony: 39--46
• Opis fizyczny: Bibliogr. 9 poz., tab., wykr.

Twórcy

autor

Michalski D.

• University of Zielona Góra, Department of Mechanics, 65-246 Zielona Góra, ul. Szafrana 2, POLAND

autor

Walicki E.

• University of Zielona Góra, Department of Mechanics, 65-246 Zielona Góra, ul. Szafrana 2, POLAND

autor

Walicka A.

• University of Zielona Góra, Department of Mechanics, 65-246 Zielona Góra, ul. Szafrana 2, POLAND

autor

Jurczak P.

• University of Zielona Góra, Department of Mechanics, 65-246 Zielona Góra, ul. Szafrana 2, POLAND

Bibliografia

• [1] Avenas P., Agassant J.-F. and Sergent J.P. (1982): La Misę en Formę des Matiere Plastiąues. - Paris: Tec-Doc. Lavoisier.
• [2] Hashimoto H. and Amagai K. (1993): A theoretical model for multiphase flow with solidified particles. - JSME Int. Ser. B, vol.36, No.4, pp.584-591.
• [3] Michalski D. (2004): Mathematical modelling of polymers flows in extrusion heads and the channels of injecticm moulds (in Polish). - PhD Thesis, University of Zielona Góra, pp. 1-247.
• [4] Shulman Z.P. (1975): Convective heat transfer of rheologically complex fluids (in Russian). - Moscow: Energy.
• [5] Walicka A. (1993): Averaged inertia method for the flow ofviscous fluid in a slot between fixed surfaces of revolution. - ZN WSI Zielona Góra, Mechanika, vol.l8, pp. 153-163.
• [6] Walicka A. (1999): Analysis of polymers flow through dies of forming devices. - Applied Mechanics and Engineering. vol.4, No.2, pp.265-270.
• [7] Walicka A. (2002a): Rheodynamics of Non-Newtonian Fluids in Straight and Curved Channels (in Polish). - Zielona Góra: University Press.
• [8] Walicka A. (2002b): Rotational flows of the rheologially complex media in thin annular channels (in Russian). - Zielona Góra: University Press.
• [9] Walicki E. and Walicka A. (1998): Simulation of the polymer flow through dies of forming devices. - 5th Europeac Rheology Conference, Slovenia, Mat. Konf., September 6-11, pp.417-418.