Issue with incompressible fluid in v6.2.1

[DanWBR]

Calling

PropsSI("H", "T", 325.15, "P", 3800, "INCOMP::LiBr[0]")

throws an exception on the latest version (6.2.1):

System.ApplicationException
HResult=0x80131600
Message=Initialize failed for backend: "INCOMP", fluid: "" fractions ""; error: key [] was not found in string_to_index_map in JSONIncompressibleLibrary

On v6.1.0, it returns

67181.93463102358

Tested with the C# version on Windows and Darwin 64-bit.

[jowr]

Thank you for the bug report. I am going to have a look at this.

[henningjp]

I noticed this as well. The Mathcad verification sheet tests "INCOMP::MITSW[0]" and it says the fluid string is invalid. This could be related to the patch we put in for dropping mixture components that have a mole fraction of zero from the mixture calculation under HEOS. I bet it needs a backend check so that it leaves INCOMP fluid strings alone. I can peak at it as well.

[henningjp]

@DanWBR This will be an easy fix. In the mean time, using the dash notation still works. So you can use fluid strings like "INCOMP::LiBr-0%".

[DanWBR]

Thanks @henningjp. I'll wait for a fixed version, using v6.1.0 in the meantime.