What's New

Release notes for PocketFlow Pro. To get the latest version, visit the download page with your licence key.

Version 1.7

2026-11

New UI and branding

  • New UI and branding
  • Improved stability of two-way coupling and body-to-body contact
  • Improved measurement definitions for probes
  • Improved object placement in the 3D view
  • Improved display of translucent models and moving bodies in the 3D view.
  • Fixed an instability where imported geometry ends exactly at the domain boundary
  • Flow tracers now stay on the water under bridge decks and other thin structures, in every display mode
  • Lower GPU memory use and faster stepping on large models
  • Fixed an instability after changing the cell size of an existing simulation
  • Fixed an intermittent connection error between the app and the browser

Version 1.6

2026-10

The Detailed solver schemes now use a new variable density solver.

  • The Detailed solver schemes now use a new variable density solver.
  • Smoother display of water and solid surfaces in the 3D view.
  • Improved small cell treatment of solid surfaces and terrain.
  • Improved GPU memory management when handling large scenes.
  • Cut-cell cutoff sliders removed; existing scenes keep their saved values.

Version 1.5

2026-10

PocketFlow Pro now keeps itself up to date.

  • Shallow Water (2D) regions, fully coupled to the surrounding 3D flow.
  • Terrain import from DEM (ASC, GeoTIFF, XYZ).
  • Automatic updates, with release notes on this What's New page.
  • Split view: 2 or 4 panes, each with its own camera and result type.
  • VTK multiblock export including refinement and Shallow Water regions.
  • Refinement regions out of experimental: conservative coupling and up to 3x faster.
  • Fixed: STL rotation, offset and scale edits now rebuild the solid geometry.
  • Faster loading, resets and saves on large scenes.
  • Worked example scene (Shallow Water + refinement + terrain) in the examples folder.
  • Fixed license validation on corporate networks that inspect HTTPS traffic (affected v1.5.4).
  • A temporary connection problem to the license server now uses the offline grace period instead of stopping the application.
  • General improvements to simulation accuracy near refinement regions, startup speed, and the interface (including a Run toggle for fans, pumps and sources).
  • Better velocity prediction on steep chutes and stepped spillways.
  • Adjustment of solver defaults.
  • Fixed a start-up crash in the renderer.
  • Improved gridded terrain import.
  • Improved velocity calculations in bed cells.
  • Improved turbulence model behaviour in certain simulations.
  • Refinement regions no longer restrict downstream boundaries.
  • Improved free-surface stability in certain simulations.
  • New export fields and faster VTI export.
  • Improved turbulence model behaviour near the free surface.
  • Primitives: groups, on/off switches and one-click refinement regions; multi-select, delete and undo/redo; shown in colour in the STL view.
  • Live probe values as the simulation runs.
  • Distance measurement in the 3D view.
  • Option to reset a loaded simulation to its saved state.
  • Increased max number of pumps.
  • Improved moving objects.
  • Improved coupling between Shallow Water regions and refinement regions.
  • Improved thin-sheet flow on steep faces.
  • Improved adaptive timestepping behaviour in some simulations.
  • Improved realistic water rendering in simulations with refinement regions.
  • Flow particles: animated flow trails in plan view.
  • Faster streamlines on large models.
  • Round pumps for impellers in pipes.
  • Rock zones can include the stone volume.
  • Rock zones now work inside refinement blocks.

Version 1.4

2026-08

Porous rock zones, flow screens with head loss, and cut-cell primitives.

  • Porous rock zones for gabions and rock structures.
  • Flow screens and trash racks with realistic head loss at any inclination.
  • Primitive shapes with smooth cut-cell surfaces and numeric transform entry.
  • Improved free-jet velocity sampling, near-bed wall distance, terrain contact and exports.

Version 1.3

2026-06

Moving objects, realistic rendering, and expanded data export.

  • Moving objects: rigid bodies in full two-way coupling, with 6-DOF motion and contact.
  • Realistic water and STL rendering with adjustable lights and HDRI.
  • Time-varying gravity g(t); per-STL wall roughness.
  • Multi-variable CSV export with spline mode; bed elevation and bed pressure outputs.

Version 1.2

2026-05

Pumps, open-channel visualisation modes, and a crisper free surface.

  • Pump model: up to four pumps per scene.
  • Open-channel visualisation modes: depth-averaged velocity, hydraulic head, free-surface elevation.
  • Interface Compression for a crisp, one-cell water surface.
  • Jet/Sheet treatment for thin plunging jets and spillway flows.

Version 1.1

2026-05

Refinement regions: a finer mesh only where it matters.

  • Refinement regions: a finer mesh around the structure of interest, fully coupled to the surrounding flow.
  • Draggable colour bar.

Version 1.0

2026-05

First release: GPU-accelerated 3D free-surface CFD on the desktop.

  • GPU-accelerated 3D free-surface solver.
  • STL geometry import with fast voxelization.
  • Baffles: thin walls and weir plates without modelling thin solids.
  • Sources and sinks with flow-rate control.
  • Velocity, pressure and turbulence visualisation, with frame recording.
  • Example scenes, licence management and a simple launcher.
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