EnginSoft - CAE Conference Abstracts

EnginSoft International Conference 2011
CAE Technologies for Industry

Integration of a Fully 3D CFD Model in a Lumped Parameter System Simulation through the Use of an Explorative DOE Methodology

Apparuti Daniele - Tetra Pak (Italy)
Torelli C. - Tetra Pak (Italy)

Abstract

A controlled environment is maintained in the aseptic chamber of a filling machine by sterilizing the gas phase in a complex sterile system composed by heat exchangers, a blower, valves and de–humidificators. The filling machine accomplish different steps in order to prepare itself to the real production and the sterile system provides different flow conditions in relation to specific phases like pre-heating, sterilization and drying of the aseptic chamber.
The construction of a lumped parameters model (1D) is the best strategy to simulate the system in particular to cover transient flow condition though each component. The topic of the presentation covers the methodology applied to resolve the flow inside a sterile valve using 3D CFD simulation and a DOE sequence on shutters rotation angles. Afterward the different flow splits calculated are post processed building a response surface that is used in the lumped parameter model to characterize the valve element.