h_gap 0.9[mm] "Distance between electrodes"
L_electrode 100[mm] "Electrode length"
L_pipe L_electrode/8 "Length of inlet and outlet pipes"
h_porous 0.7[mm] "Porous electrode thickness"
L_system L_pipe*2+L_electrode "Total length of system"
d_z h_porous "Out-of-plane thickness"