save Zmix in nonpremixed and do better at saving extinction

[baperry2]

For nonpremixed flamelets we need to save the mixture fraction as part of the flamelet data.

Also, if the flame solve fails hen approaching extinction, do a new solve at high strain rate automatically to get an extinct flamelet.

[Copilot]

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[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

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[Copilot]

The flame.solve() call here lacks error handling. If this solve fails, it will raise an unhandled exception and crash the program. Consider wrapping this in a try-except block or using func_timeout like the other solve calls in this file.

Suggested change

	flame.solve()
	try:
	flame.solve()
	except FunctionTimedOut as exc:
	print(
	f"rank {rank}: Extinct flame solve timed out at alpha = {ext_alpha}: {exc}",
	flush=True,
	)
	solve_failed = True
	break
	except Exception as exc:
	print(
	f"rank {rank}: Extinct flame solve failed at alpha = {ext_alpha}: {exc}",
	flush=True,
	)
	solve_failed = True
	break

[Copilot]

Comment contains a typo: "vhigh" should be "very high" or "v. high".

Suggested change

	# if last solve failed, recompute with vhigh strain to get extinct flame
	# if last solve failed, recompute with very high strain to get extinct flame