Short, captioned screen recordings of the real application, no narration needed. Each one shows a single idea from start to finish.
A gas plant built from one paragraph, and a stubborn column diagnosed by the advisor. In both, the simulator’s own solver computes every number.
One paragraph describing a natural gas conditioning plant becomes a plan from Claude: the fluid package, every stream and unit, and a recycle for the loop through the gas/gas exchanger. Build draws and solves it, and a change asked for in plain words chills the gas to −30 °C.
The Luyben depropanizer with its reflux ratio capped at 2 stops at 73.1 mol% propane. Diagnose deeper tests reflux 2, 3 and 4 on a private copy and finds the cap below the column’s minimum; with the limit raised, it solves at 95.0 mol%.
An empty case to a solved natural-gas chiller: a cooler and a two-phase separator from the Equipment Palette, streams dropped onto the ports, the specifications typed in, and a live stream table on the drawing.
A separator under level control, DWSIM’s own dynamic run drawn beside the app’s, a controller planned by Claude, and a tank draining through a valve. Dynamics is not part of the free download; the Dynamics page says how to get it.
A solved separator switched to Dynamics: the readiness check, one click to accept its defaults, a 25 % feed step, and the level controller bringing the level back to its set point.
DWSIM’s separator sample, imported with its controllers, events and recorded run, then run for its 20.5 minutes: DWSIM’s run drawn dashed, each line’s difference beside it.
One sentence to Claude becomes a level controller, planned, built and tuned – and it holds the level through a feed step in the run.
With its feed stopped, a 6 m water tank drains for an hour of run time: its outflow falls in a straight line while its level falls along a curve – Torricelli’s law.
A small gas plant, a water–ethanol heater, and real HYSYS and DWSIM cases: what a sub-flowsheet block is and what you can do with one.
Select the compressor and its aftercooler, group them into one block, name it, go inside, and solve: the same answer flat or folded.
The same 300 kW heats a water–ethanol feed to 79.01 °C on Peng-Robinson and 75.16 °C with the block’s inside on NRTL-PR. The Boundary tab shows every crossing.
A HYSYS case with two sub-flowsheets arrives as two blocks, drawn as HYSYS drew them; a DWSIM Flowsheet unit operation arrives as a block too.
Show the chiller’s duty on the block, set its outlet temperature from the block, then let an Adjust on the main sheet drive it.
More videos are on the way.
The cases in these videos are small enough to rebuild in a few minutes on version 1.6.2.
