A Numerical Model of Bubbling Thermoplastics
A Numerical Model of Bubbling Thermoplastics
A Numerical Model of Bubbling Thermoplastics
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• 1-D Finite element model<br />
<strong>Numerical</strong> <strong>Model</strong><br />
– Mass balance for gas and polymer<br />
– Energy balance<br />
• Individual bubble dynamics<br />
– In 3-D<br />
– Sizes and locations <strong>of</strong> bubbles<br />
determine amount <strong>of</strong> gas in each<br />
element<br />
– Motion <strong>of</strong> bubbles determine velocities
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