[Examples] Fix file output issues with some flame examples

samples/python/onedim/diffusion_flame_batch.py

@@ -98,7 +98,7 @@ def names(test):
 # Save to data directory
 file_name, entry = names("initial-solution")
 desc = "Initial hydrogen-oxygen counterflow flame at 1 bar and low strain rate"
-f.save(file_name, name=entry, description=desc)
+f.save(file_name, name=entry, description=desc, overwrite=True)
 
 # %%
 # Batch Pressure Loop
@@ -148,7 +148,8 @@ def names(test):
         # Try solving the flame
         f.solve(loglevel=0)
         file_name, entry = names(f"pressure-loop/{p:05.1f}")
-        f.save(file_name, name=entry, description=f"pressure = {p} bar")
+        f.save(file_name, name=entry, description=f"pressure = {p} bar",
+               overwrite=True)
         p_previous = p
     except ct.CanteraError as e:
         print('Error occurred while solving:', e, 'Try next pressure level')
@@ -201,7 +202,7 @@ def names(test):
         f.solve(loglevel=0)
         file_name, entry = names(f"strain-loop/{n:02d}")
         f.save(file_name, name=entry,
-               description=f"strain rate iteration {n}")
+               description=f"strain rate iteration {n}", overwrite=True)
     except FlameExtinguished:
         print('Flame extinguished')
         break
@@ -238,9 +239,10 @@ def names(test):
 ax2.legend(loc=0)
 ax2.set_xlabel(r'$z/z_{max}$')
 ax2.set_ylabel(r'$u/u_f$')
-fig1.savefig(output_path / "figure_u_p.png")
+fig2.savefig(output_path / "figure_u_p.png")
 plt.show()
 
+# %%
 fig3 = plt.figure()
 fig4 = plt.figure()
 ax3 = fig3.add_subplot(1, 1, 1)
@@ -261,10 +263,10 @@ def names(test):
 ax3.legend(loc=0)
 ax3.set_xlabel(r'$z/z_{max}$')
 ax3.set_ylabel(r'$T$ [K]')
-fig1.savefig(output_path / "figure_T_a.png")
+fig3.savefig(output_path / "figure_T_a.png")
 
 ax4.legend(loc=0)
 ax4.set_xlabel(r'$z/z_{max}$')
 ax4.set_ylabel(r'$u/u_f$')
-fig1.savefig(output_path / "figure_u_a.png")
+fig4.savefig(output_path / "figure_u_a.png")
 plt.show()

samples/python/onedim/diffusion_flame_extinction.py

@@ -146,7 +146,8 @@ def names(test):
         # Flame is still burning, so proceed to next strain rate
         n_last_burning = n
         file_name, entry = names(f"extinction/{n:04d}")
-        f.save(file_name, name=entry, description=f"Solution at alpha = {alpha[-1]}")
+        f.save(file_name, name=entry, description=f"Solution at alpha = {alpha[-1]}",
+               overwrite=True)
 
         print('Flame burning at alpha = {:8.4F}. Proceeding to the next iteration, '
               'with delta_alpha = {}'.format(alpha[-1], delta_alpha))
@@ -155,7 +156,8 @@ def names(test):
         # strain rate increase is reached, save the last, non-burning, solution
         # to the output file and break the loop
         file_name, entry = names(f"extinction/{n:04d}")
-        f.save(file_name, name=entry, description=f"Flame extinguished at alpha={alpha[-1]}")
+        f.save(file_name, name=entry, overwrite=True,
+               description=f"Flame extinguished at alpha={alpha[-1]}")
 
         print('Flame extinguished at alpha = {0:8.4F}.'.format(alpha[-1]),
               'Abortion criterion satisfied.')

samples/python/onedim/flame_initial_guess.py

@@ -64,7 +64,8 @@ def describe(flame):
 
 print("Save YAML")
 yaml_filepath = output_path / "flame.yaml"
-f.save(yaml_filepath, name="solution", description="Initial methane flame")
+f.save(yaml_filepath, name="solution", description="Initial methane flame",
+       overwrite=True)
 
 print("Save CSV")
 csv_filepath = output_path / "flame.csv"
@@ -74,7 +75,8 @@ def describe(flame):
     # HDF is not a required dependency
     hdf_filepath = output_path / "flame.h5"
     hdf_filepath.unlink(missing_ok=True)
-    f.save(hdf_filepath, name="freeflame", description="Initial methane flame")
+    f.save(hdf_filepath, name="freeflame", description="Initial methane flame",
+           overwrite=True)
     print("Save HDF\n")
 else:
     print(f"Skipping HDF: Cantera compiled without HDF support\n")