Changelog

This is the record of what has shipped in Fluid Network Studio, newest first, from August 2026 onwards. Dates are the day the change was released, and every entry is something you can go and use. Work that never reached you is not listed here.

The tool is developed continuously rather than in numbered releases, so entries are grouped by release date, one line per change. Solver changes are held to the same gate throughout: a change ships only once the verification suite passes, and any release that could move an existing result is gated on reproducing that result first.

One naming note. The product was called Hydraulic Network Studio until July 2026, when it was renamed Fluid Network Studio because the solver had long since stopped being only about water. Older files, saved links and search results may still carry the old name. Everything still works.

September 2026

The month's two main additions are written up in what's new, September 2026.

26 September 2026

• Build with AI demo video: a network drafted in one AI assistant, changed in another, then solved and reported. Watch it.
• Printed calculation reports fill the page and print only the report, with tables that break cleanly across pages.
• Clearer warning when a node's absolute pressure falls below zero: the result is flagged as not physically possible.
• Fixed: a network built with AI keeps the description from its file, not the one from the project open before it.

24 September 2026

• Demo video on how it works: a network drawn and solved in under two minutes. How it works.
• Fixed: the CFD export downloads as NetworkCouplingMacro.java, matching the class inside it, which Java requires before STAR-CCM+ can compile it.
• Page not found now offers a way back to the homepage, the calculators and the Studio.
• Calculators open with what each one computes, above the inputs. All calculators.
• Worked examples have headings that say what each section answers, and list the sources they rely on. All examples.
• Verification links NASA's GFSSP report and OWA-EPANET wherever a case names them, and labels each kind of reference plainly. See the cases.
• Found an error? The verification and about pages now say where to report one. Corrections are recorded here.
• To scale now sets its scale from the longest pipe, so a network with a 180 m main and 1 m stubs stays in view.
• Fit view button, command-palette entry and Shift F. Zoom out as far as the drawing needs while To scale is on.
• Fixed: switching back to Schematic works even when the drawing is off screen.

23 September 2026

• Build a network with AI. Describe it to your own assistant, paste the reply, review the check, load it. How it works.
• Change a network with AI. The review lists what was added, changed and removed, applied in one undo step.
• Draw pipes to scale. View menu, To scale. A scale bar tracks your zoom, and pipes that cannot be drawn exactly are flagged.
• Build with AI dialog: write your request in the dialog, copy the guide and request together, and turn on your assistant's thinking mode.
• Element limit message when you add past your plan's limit, with the next step.
• View updates in the account menu, with a dot when there is something new.
• Fixed: a partly copied AI reply is reported as such, and an AI-built pump lands beside the tank it is mounted on.

August 2026

13 August 2026

• Nine more published verification cases, now 31 on the verification page, each with its named reference.
• Expert settings. Solver numerics and CFD coupling controls sit behind one toggle in the Model tab.
• Fixed: dialogs stealing focus mid-typing.

What is next

The roadmap follows what people actually ask for, so if something above stops short of what you need, use Send feedback in the Studio's Help menu and say so. Two gaps we already name openly on the CFD coupling page: a Fluent version of the export, which is STAR-CCM+ only today, and temperature-dependent fluid properties in the coupled thermal model, which uses constant properties today. Neither has a date, and neither appears above, because nothing goes on this list before it ships.

Open the Studio and try any of it. Liquid analysis, the 20 built-in examples and the free calculators cost nothing.