Flow of a molten starch through the reverse flight element of a twin screw extrusion cooker

  • J. Tayeb
  • B. Vergnes
Conference paper


The reverse screw element is an important part of food processing twin screw extruders, when considering thermomechanical phenomena and product transformation. Using flow rate conservation equations, the pressure and flow rate fields were determined, as well as their evolution with screw speed and feed rate. Experimental confirmation is obtained by computing the residence time distribution.

Key words

Extrusion-cooking reverse flight element maize starch Navier-Stokes equation residence time distribution 


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Copyright information

© Springer-Verlag Berlin Heidelberg 1988

Authors and Affiliations

  • J. Tayeb
    • 1
  • B. Vergnes
    • 2
  1. 1.Laboratoire de Biochimie et Technologie des GlucidesInstitut National de la Recherche AgronomiqueNantes CedexFrance
  2. 2.Centre de Mise en forme des Matériaux, UA 852Ecole Nationale Supérieure des Mines de ParisValbonneFrance

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