Skip to content

Flowstead v3.0.2

Choose a tag to compare

View all tags
@github-actions github-actions released this 31 Oct 19:22
v3.0.2
324d553
This commit was signed with the committer’s verified signature.
claude Claude
SSH Key Fingerprint: 32dP45eSMmVSt/G/CGvcxl/P+MO3Nwj9xeTh/GSA2wc
Verified
Learn about vigilant mode.

Flowstead v3.0.2 (app version 3.0.2).

Z factor for gases only, and faster with hypothetical components

  • The Z factor (Z = PV/nRT) is now shown only for a vapour phase and for vapour-only streams. Liquid phases no longer show a Z factor, and neither do liquid or two-phase streams. This also covers projects solved by earlier versions. In the PVT experiments, an oil above its bubble point has no gas Z, while a gas condensate above its dew point still shows its Z.
  • Cases with hypothetical components solve faster. Each hypothetical's properties (critical constants, acentric factor, Rackett and COSTALD parameters, volume shifts) come from several fits, and these were repeated on every solve. They are now calculated once and reused until the hypothetical's inputs change. On the server the fits took about 90 ms per hypothetical per solve. A repeat solve of a stream with one hypothetical dropped from about 240 ms to about 100 ms, the same as a database compound. The saving grows with the number of hypotheticals, and the phone's engine is slower than the server's.

Install: download flowstead-v3.0.2.apk on your Android phone (Android 8.0 or newer, 64-bit), open it and allow installing from this source.

Coming from a 0.x test build? Those were signed with the public debug key and this release is signed with the release key, so Android can't install it over them: export each project you want to keep (project menu → Export DWSIM file), uninstall the old app, install this one and import the files (Projects → Import DWSIM file). Data-sheet fields and line-sizing criteria are not part of a DWSIM file. Later releases install as updates.

Solves on the phone: DWSIM runs on the device (Settings → Engine → On this phone, the default); the first solve after starting the app takes a few seconds while DWSIM loads. A remote Flowstead engine (docs/engine-setup.md) is optional.

Release certificate SHA-256: d7883cfc24f1cb62db989086d69d217beed109b5b84164ff5394ad9e3e0bb921. flowstead-v3.0.2-mapping.txt de-obfuscates crash reports. Status and known limitations: docs/STATUS.md.

Commit: 324d553

Assets 5
Loading