Flow of a molten starch through the reverse flight element of a twin screw extrusion cooker
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 wordsExtrusion-cooking reverse flight element maize starch Navier-Stokes equation residence time distribution
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