Boundary conditions with pde solver

I would like to implement the following boundary conditions in the simulation of an adsorption fixed bed:

t >0 x=0 (column inlet) u=uo (40 mg/L, initial composition)

t >0 x=L (column outlet) du/dx=0 (no flux)

Thanks

Answer 1

[Priyanka Kondapalli]

Hi

Please refer to the below link on how to implement boundary conditions

Link: Boundary Conditions