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Article | REF: AM3661 V1

Coextrusion of polymers: interfacial instabilities

Author: Rudy VALETTE

Publication date: January 10, 2010

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3. Modeling interface instabilities

3.1 Linear stability study

The principle of linear stability studies is to add to the basic solution periodic disturbances of sufficiently small amplitude that the non-linear terms of the equation (4) are negligible. We then study the evolution of these disturbances, which may be damped or amplified. The linear stability study is used to determine whether or not the system behaves like a noise amplifier, depending...

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Modeling interface instabilities
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