From: Chan Chun K Chan on
How to specific boundary condition for heat equation that at one side the B.C. takes the form of dU/dt=0? thanks!
From: Torsten Hennig on
> How to specific boundary condition for heat equation
> that at one side the B.C. takes the form of dU/dt=0?
> thanks!

This is a Dirichlet boundary condition:
U(t) = U(t=tstart) for all t.
Every solver should include an option to define
a Dirichlet condition as a boundary condition.

Best wishes
Torsten.