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4th order pde

Posted 20 feb 2014, 06:55 GMT-5 Low-Frequency Electromagnetics, MEMS & Nanotechnology, Plasma Physics, RF & Microwave Engineering, Fluid & Heat, Heat Transfer & Phase Change, MEMS & Piezoelectric Devices, Microfluidics, Porous Media Flow, Mesh, Modeling Tools & Definitions, Parameters, Variables, & Functions, Results & Visualization, Studies & Solvers, Structural Mechanics 3 Replies

Karolis Ratautas
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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 21 feb 2014, 03:37 GMT-5
Lingling Tang
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Posted: 1 decade ago 20 feb 2014, 07:50 GMT-5

you can follow the "The KdV Equation and Solitons" model.
you can follow the "The KdV Equation and Solitons" model.
Karolis Ratautas
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Posted: 1 decade ago 21 feb 2014, 03:09 GMT-5
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
Karolis Ratautas
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Posted: 1 decade ago 21 feb 2014, 03:37 GMT-5
Please answer

Regards,

Karolis
Please answer Regards, Karolis

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