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Explicit Solver in math mode
Posted 2011年9月18日 GMT-4 08:09 Version 4.2 1 Reply
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Hello,
I want to try the explicit solver to solve a problem that is easily solved by the Time-Dependant solver.
The equation to be solved on a 1D interval is :
test(ux^2), where u is the variable.
The initial condition is u(t=0)=0.
There are to Dirichlet boundary conditions : u(1)=0 and u(2)=10*t
The Time-Dependant solver gave the expected solution : at t=1, u(2)=10.
But using the explicit solver with the default settings leads to this error message :
"Explicit time stepping requires linear time-independent constraints"
I don't understand what it means. Do you have any ideas ?
Thanks !
I want to try the explicit solver to solve a problem that is easily solved by the Time-Dependant solver.
The equation to be solved on a 1D interval is :
test(ux^2), where u is the variable.
The initial condition is u(t=0)=0.
There are to Dirichlet boundary conditions : u(1)=0 and u(2)=10*t
The Time-Dependant solver gave the expected solution : at t=1, u(2)=10.
But using the explicit solver with the default settings leads to this error message :
"Explicit time stepping requires linear time-independent constraints"
I don't understand what it means. Do you have any ideas ?
Thanks !
1 Reply Last Post 2011年10月6日 GMT-4 09:24
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Posted:
1 decade ago
Support answered me that in Dirichlet Boundary Conditions, the time parameter "t" can't be used.
(With the time dependent solver i used " t " in order to apply a loading that increases with time)
(With the time dependent solver i used " t " in order to apply a loading that increases with time)