Software for twin-screw extrusion simulation, developed by Sciences Computers Consultants in St.-Etienne, France, was introduced to the U.S. with a presentation at the SPE ANTEC in Milwaukee last May.

Software for twin-screw extrusion simulation, developed by Sciences Computers Consultants in St.-Etienne, France, was introduced to the U.S. with a presentation at the SPE ANTEC in Milwaukee last May. Called Ludovic, the software already has several U.S. licensees and a growing niche in simulating starch and biopolymer compounding. The newest feature is reactive extrusion simulation, believed to be unique. For this, users enter into an Excel spreadsheet the extruder dimensions, screw element descriptions, rheological data on the materials, and a kinetic equation describing the reaction. The software then computes reaction rate, residence time, and mechanical properties of the resulting material. Ludovic’s Workshop Optimiser lets users start with an objective they want to achieve with reactive extrusion, such as higher output or better mixing, and then ask the software to test incremental changes in one or two process variables like screw speed or barrel temperature and automatically find the optimum combination. +33 (477) 49 75 80 • www.scconsultants.com