The objective of this paper is to better characterize the influence of process parameters (impeller revolution
speeds) on the performance of a planetary flour-beater mixer (mixer bowl P600 from Brabender)
used in dough production.
Firstly, we have theoretically described the path followed by the impeller tip into the vessel and the
variation of the absolute velocity during its trajectory. This gives us indications during the transient mixing
action of the material induced by this mixer.
Secondly, we have theoretically and experimentally shown that for Newtonian fluids:
(i) The power dissipated by this mixer is strongly dependent on the impeller speed ratios.
(ii) It is possible to obtain for this planetary mixer a unique master power curve, gathering on the
same characteristic the influence of the dual impeller speeds on power consumption. This requires
the introduction of a characteristic velocity, known as the maximal impeller tip velocity, into
power and Reynolds numbers. The constant Kp of the mixer bowl P600, determined as the product
of the modified Reynolds and power numbers, was found to be equal to 48.6