Numerical simulation of current distribution along the boron-doped diamond anode of a filter-press-type FM01-LC reactor during the oxidation of water

•Numerical simulation of current distribution along the boron-doped diamond anode.•Theoretical analysis of primary and secondary current distributions.•Hydroxyl radical formation via water discharge was used as a test system.•Primary current distribution at boron-doped diamond can be considered uniform.•Appropriate cell design favors the efficient production of hydroxyl radicals.