Christian Marschik, Wolfgang Roland, Jürgen Miethlinger, Tim Osswald,
"A Heuristic Model for Predicting Three-Dimensional Non-Newtonian Flows in Metering Channels"
: ANTEC® 2018 - Orlando, Florida, USA May 7-10, 2018.Society of Plastics Engineers, 2018
Original Titel:
A Heuristic Model for Predicting Three-Dimensional Non-Newtonian Flows in Metering Channels
Sprache des Titels:
Englisch
Original Buchtitel:
ANTEC® 2018 - Orlando, Florida, USA May 7-10, 2018.Society of Plastics Engineers
Original Kurzfassung:
Being able to include the shear-thinning behavior of polymer melts in the theoretical analysis of melt-conveying and pressurization generally involves the application of numerical techniques. We have recently proposed a fast and accurate analytical approximation method for predicting the pumping characteristics of power-law fluids in three-dimensional metering channels. Removing the need for time-consuming simulations, this novel theory provides an algebraic throughput-pressure gradient relationship that can be implemented easily in real screw designs. By considering the three-dimensional geometry of the screw channel and the non-Newtonian flow behavior of the polymer melt, our model is a close representation of the actual physical process. Here, we revisit the design of the heuristic model, present further results, and validate the method against additional numerical solutions.