python/plot_sod.py at main · hannahjleary/python · GitHub

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#!/usr/bin/env python3
# Example python plotting script for the 1D Sod Shock Tube test

import h5py
import numpy as np
import matplotlib
matplotlib.rcParams['mathtext.default']='regular'
matplotlib.rcParams['xtick.direction']='in'
matplotlib.rcParams['ytick.direction']='in'
matplotlib.rcParams['xtick.top']=True
matplotlib.rcParams['ytick.right']=True
import matplotlib.pyplot as plt

dnamein='../../../data/sod2/'
dnameout='../../../plots/sod2/'

DE = 0 # dual energy flag - 1 if the test was run with dual energy
iend = 10 # output file number

for i in range(iend):

  f = h5py.File(dnamein+str(i)+'.h5.0', 'r')
  head = f.attrs
  nx = head['dims'][0]
  gamma = head['gamma'][0]
  d  = np.array(f['density']) # mass density
  mx = np.array(f['momentum_x']) # x-momentum
  my = np.array(f['momentum_y']) # y-momentum
  mz = np.array(f['momentum_z']) # z-momentum
  E  = np.array(f['Energy']) # total energy density
  vx = mx/d
  vy = my/d
  vz = mz/d
  if DE:
    e  = np.array(f['GasEnergy'])
    p  = e*(gamma-1.0)
    ge = e/d
  else:
    p  = (E - 0.5*d*(vx*vx + vy*vy + vz*vz)) * (gamma - 1.0)
    ge  = p/d/(gamma - 1.0)

  fig = plt.figure(figsize=(6,6))
  ax1 = plt.axes([0.1, 0.6, 0.35, 0.35])
  plt.axis([0, nx, 0, 1.1])
  ax1.plot(d, 'o', markersize=2, color='black')
  plt.ylabel('Density')
  ax2 = plt.axes([0.6, 0.6, 0.35, 0.35])
  plt.axis([0, nx, -0.1, 1.1])
  ax2.plot(vx, 'o', markersize=2, color='black')
  plt.ylabel('Velocity')
  ax3 = plt.axes([0.1, 0.1, 0.35, 0.35])
  plt.axis([0, nx, 0, 1.1])
  ax3.plot(p, 'o', markersize=2, color='black')
  plt.ylabel('Pressure')
  ax4 = plt.axes([0.6, 0.1, 0.35, 0.35])
  plt.axis([0, nx, 1.5, 3.7])
  ax4.plot(ge, 'o', markersize=2, color='black')
  plt.ylabel('Internal Energy')

  plt.savefig(dnameout+str(i+1)+".png", dpi=300);
  plt.close(fig)