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This paper deals with the finite element modelling of non-isothermal flow of a power-law fluid past an internal mixer rotor. The model uses a set of boundary constraints which correspond to stressfree surfaces at the inlet and the outlet of the domain. At the walls of the domain the conditions of no-slip, controiled-slip and perfect-slip are alternatively incorporated in the simulations. A stream-line upwinding technique used in the solution scheme enables it to yield convergent results for high Peclet No. flow, even if relatively coarse meshes are used. Comparison of these results with the available experimental evidence confirm the general validity of the methods used.

Spreader Blade Analogy of Flow Past an Internal Mixer Rotor: Two Dimensional Steady State Model