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Solve PDE on 1D domain?
Posted 15 mar 2013, 08:33 GMT-4 Geometry, Mesh, Studies & Solvers Version 4.3 1 Reply
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Hy guys, I have a problem with solving a PDE based model defined by me, it is not a default template in COMSOL.
My problem is that the equation is solved for the time domain, but not for the geometry specified. ( Interval )
Does the solver automatically solve with respect to 'x axis' ( it represents the height of a reactor x=[0,20] m )?
The PDE I'm trying to solve is the following:
dT/dt=-VL*dT/dx-constant
where VL and constant are known.
Could you help me with this,
Thank you.
My problem is that the equation is solved for the time domain, but not for the geometry specified. ( Interval )
Does the solver automatically solve with respect to 'x axis' ( it represents the height of a reactor x=[0,20] m )?
The PDE I'm trying to solve is the following:
dT/dt=-VL*dT/dx-constant
where VL and constant are known.
Could you help me with this,
Thank you.
1 Reply Last Post 15 mar 2013, 16:17 GMT-4
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Posted:
1 decade ago
Hi
you have a 1D (spatial) equation (response is a field of (x,t), no?
so, use 1D dimension, draw a geometry of a line of the appropriate lengh (or 1 and multiply by the length) and apply your equation. Your default dependet variable will be u (scalar) or whatever you call it
--
Good luck
Ivar
you have a 1D (spatial) equation (response is a field of (x,t), no?
so, use 1D dimension, draw a geometry of a line of the appropriate lengh (or 1 and multiply by the length) and apply your equation. Your default dependet variable will be u (scalar) or whatever you call it
--
Good luck
Ivar