Precise Simulation of the Complete Process
Now for the first time researchers at the Fraunhofer Institute for Industrial Mathematics ITWM in Kaiserslautern have developed a tool capable of simulating spinning processes involving thousands of filaments. “Our simulation reproduces the solvent concentration in each individual filament, as well as the mutual interactions of all filaments with the gas flow,” says Dr. Walter Arne, research associate at Fraunhofer ITWM. “The resulting simulation represents not only the complete aerodynamic situation of the system, for example velocity and temperature profiles and solvent distribution, it also generates the relevant state variables along the filaments, for example temperature.”
This means that manufacturing companies can quickly and easily get to the bottom of difficulties in the production process, can increase their understanding of the decisive parameters and can scale up new manufacturing processes with relative ease. An example: When turbulence effects in the duct are so strong that the individual filaments repeatedly come into contact and stick together, Dr. Arne and his colleagues can use the simulation to investigate the gas flow and optimize it with new component parts in order to eliminate the problem. This reduces production waste and increases filament quality.