disp         A*Y*fX*sin(2*pi*(-t*freq+X*N/L))*flc2hs((t-1/freq)[1/s],1/freq[s])         Displacement of the channel
fX           flc2hs(X[1/m]-L[1/m]/10,L[1/m]/20)*flc2hs(9*L[1/m]/10-X[1/m],L[1/m]/20)    Smoothing in the X direction
T_wall_ave   aveop1(T)                                                                  Wall average temperature
T_fluid_ave  aveop1(linproj1(T)/linproj1(1))                                            Fluid average temperature
htc          P0/(T_wall_ave-T_fluid_ave)/W/L                                            Global heat transfer coefficient