Flow Front Advacement

[Anonymous]

Hello

My doubt is about how moldflow model the flow front.

It use a surface tracking method...right? It take an account of air contact with the polymer?Or just is the meshing filled with the polymer?

Thanks for your help

Best Regadrs

Nuno

[nordhb]

Hi,
for normal mold filling analysis, the assumption is a good(perfect) venting of cavity.

There is an option to do venting analysis from release Autodesk Moldflow Insight 2012.
This release introduces the option to perform Venting analysis for analyses of Thermoplastics Injection Molding and Thermoplastics Overmolding processes using 3D analysis technology.

Venting analysis is used to predict the effects of air pressure on the flow of polymer to aid in selecting suitable locations where vents may be placed in the mold to allow trapped air to escape the cavity.
The option to perform a venting analysis is available when an analysis sequence that includes Fill or Fill+Pack.

Regards,
Berndt