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Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

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time dependent solver error

Posted 09.01.2012, 11:23 GMT-5 Studies & Solvers Version 4.0a 1 Reply

Ramandeep Saluja
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I am implementing this equation

dT/dt=k1/b(k2x-T(1+k2/k1)+A+bdx/dt)

i am using coefficient form pde every time its showing error time dependent solver..unknown function T..

what i have done is i have made cylindrical geometry ,meshed it ,added elasticity as material property,added pde then computed .i need to calculate Force(T) vs t....elongation(x) vs t..

how to do?
1 Reply Last Post 09.01.2012, 17:41 GMT-5
Lechoslaw Krolikowski
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Posted: 1 decade ago 09.01.2012, 17:41 GMT-5
Hi,
You need two equations if you want to calculate the two unknown functions.
Regards,
Andrzej
Hi, You need two equations if you want to calculate the two unknown functions. Regards, Andrzej

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