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4th order pde

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Hello everybody,

I have 4th order pde equation (Navier sokes lubrication aproximation). As I know I need to make intermediate depended variables of 2nd order. Maybe somebody could tel me where I need to fill in these intermediate dependent variable in comsol 4.2

Thank you

3 Replies Last Post Feb 21, 2014, 3:37 a.m. EST

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Posted: 1 decade ago Feb 20, 2014, 7:50 a.m. EST

you can follow the "The KdV Equation and Solitons" model.
you can follow the "The KdV Equation and Solitons" model.

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Posted: 1 decade ago Feb 21, 2014, 3:09 a.m. EST
Yes, but I need coefficient form pde how to put intermediate variables in it.

Thank you,
Karolis
Yes, but I need coefficient form pde how to put intermediate variables in it. Thank you, Karolis

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Posted: 1 decade ago Feb 21, 2014, 3:37 a.m. EST
Please answer

Regards,

Karolis
Please answer Regards, Karolis

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