45 lines
1.2 KiB
Bash
Executable File
45 lines
1.2 KiB
Bash
Executable File
#!/bin/sh
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# Require gnuplot
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command -v gnuplot >/dev/null || {
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echo "FOAM FATAL ERROR: gnuplot not found - skipping graph creation" 1>&2
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exit 1
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}
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gnuplot<<EOF
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set terminal pngcairo font "helvetica,16" size 800,600
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set xlabel "Radius, r"
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set xrange [1:2]
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set grid
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Omega1 = 100.
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Omega2 = 0.
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R1 = 1.
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R2 = 2.
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mu = Omega2/Omega1
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A = Omega1*(1. - R2*R2*mu/R1/R1)/(1. - R2*R2/R1/R1)
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B = R1*R1*Omega1*(1. - mu)/(1. - R1*R1/R2/R2)
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analytical_utheta(r) = A*r + B/r
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C = 0.5*A*A*R1*R1 + 2.*A*B*log(R1) - 0.5*B*B/R1/R1
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analytical_p(r) = 0.5*A*A*r*r + 2.*A*B*log(r) - 0.5*B*B/r/r - C
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samples="postProcessing/sample1/1000/centreLine_p_U_U:Transformed.xy"
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set ylabel "Pressure, p"
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set output "p.png"
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set samples 20
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set key bottom right
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plot samples u 1:2 w lines lw 2 lc "black" t "OpenFOAM", \
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analytical_p(x) w p ps 2 pt 6 lw 2 lc rgb "red" t "analytical"
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set ylabel "U_{/Symbol q}, rad/s"
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set output "Utheta.png"
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set samples 20
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set key top right
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plot samples u 1:7 w lines lw 2 lc "black" t "OpenFOAM", \
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analytical_utheta(x) w p ps 2 pt 6 lw 2 lc rgb "red" t "analytical"
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EOF
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