How to impose constant heat flux in boundaries

hello everyone;
I want to impose constant heat flux in the flat boundary of my 3D model.how can I do this in PALABOS?

Hey Parham,
There should be a command like

void setBoundaryTemperature<T, Descriptor>(plb::BlockLattice2D<T, Descriptor> 
&lattice, plb::Box2D domain, T temperature)

You’ll find a lot of examples of it in the showcases