A Numerical Model of Bubbling Thermoplastics
A Numerical Model of Bubbling Thermoplastics
A Numerical Model of Bubbling Thermoplastics
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• Polymer<br />
∂<br />
∂t<br />
•Gas<br />
∂<br />
∂t<br />
Continuity Equations<br />
( ) ( ) −E<br />
/ RT<br />
ρ φ + ρ φ W = −ρ<br />
φ Be<br />
p<br />
p<br />
∂<br />
∂z<br />
p<br />
p<br />
( ) ( ) −E<br />
/ RT<br />
ρ φ + ρ φ W = + ρ φ Be<br />
g<br />
g<br />
∂<br />
∂z<br />
• Volume Fractions:<br />
g<br />
g<br />
p<br />
g<br />
φ p =<br />
Vp V<br />
p<br />
p<br />
p<br />
p<br />
φg<br />
=<br />
Vg V