#!/bin/sh
cd "${0%/*}" || exit    # run from this directory

Uinf=$1
nuInf=$2
model=$3
yp=$4
gnuplot<<EOF
    set terminal pngcairo font "arial,16" size 800,600
    set output "OF_${model}_YP${yp}.png"
    set xlabel "Re_x"
    set ylabel "Cf"
    set grid
    set key right top
    set xrange [0:1e7]
    set yrange [0:0.006]
    UInf = $Uinf
    nuInf = $nuInf
    X0 = 0 # Location of start of plate
    laminar(x) = 0.664/(sqrt(x)) # Blasius - laminar
    weighardt(x) = 0.288*(log10(x))**(-2.45) # turbulent
    plot \
        weighardt(x) t "Weighardt"  w lines lc "red" lw 2, \
        "tauw_${model}_${yp}.dat" u (\$1 - X0)*UInf/nuInf:(sqrt(\$2*\$2 + \$3*\$3 + \$4*\$4)/(0.5*UInf*UInf)) title "$model y^+ ${yp}" w lines lc "black" lw 2

EOF