Intuition is not something you wait for
3D Free-Surface CFD, Rebuilt From Scratch
Streamlined workflow · Interactive simulation · Detailed physics
3D CFD has long been held back by slow run times, specialist pre- and post-processing, and a dependence on high-end computing. PocketFlow Pro removes all three: a CUDA solver that runs on consumer-grade NVIDIA hardware, automatic cut-cell meshing straight from STL, and a visual 3D setup that makes free-surface simulation practical for everyday hydraulic engineering. Built by a hydraulic engineer, for hydraulic engineers.
3.5M
Cells
60 FPS
Interactive rate
Laptop RTX 5070 Ti
Consumer GPU
Detailed Physics
Incompressible Navier–Stokes with volume-of-fluid free-surface tracking and turbulence modelling — full 3D physics.
Interactive by Design
Modify geometry, adjust boundary conditions, and inspect results without pausing the simulation. Solver profiles tuned for everything from fast iteration to detailed simulation.
Built for Insights
Built by a practising consulting engineer with teaching, research, and physical-modelling experience — designed to reconnect numerical simulation with physical intuition, not replace it.
Key Capabilities
Everything you need to run credible 3D hydraulic simulations — and nothing you don't.
GPU-Accelerated
A purpose-written CUDA solver runs full 3D free-surface simulations on your own NVIDIA GPU.
Automatic Cut-Cell Meshing
Drop in an STL and run — sub-cell geometry resolved automatically, no manual mesh preparation.
Terrain Import
Load real terrain straight from DEM files — ASC, GeoTIFF, or XYZ.
2D–3D Coupling
2D shallow-water floodplains and approach channels coupled to fully 3D structures.
Refinement Regions
Fine mesh only where it matters — coarse and fast everywhere else.
Moving Objects
Rigid bodies in two-way coupling — vehicles, debris, and floating structures.
Porous Zones & Flow Screens
Gabions, riprap, and trash racks modelled with realistic head loss.
Dynamic BCs
Rating curves and time-varying hydrographs applied straight from CSV.
Live Geometry Primitives
Add, move, and resize boxes, cylinders, and baffles while the simulation runs.
Probes & Live Diagnostics
Point, line, and plane probes plus live flux, volume, and mass tracking.
Realistic Rendering
Realistic colours, lighting, and HDRI environments — report-ready visuals.
ParaView & Multi-Angle Video
Export fields to ParaView and capture multi-angle video of every run.
How It Works
From STL to results in four steps — automatic cut-cell meshing, interactive 3D setup, one-click solver profiles, and ParaView-ready export.
Import STL Geometry
Drop in an STL from any CAD tool. Cut-cell and thin-wall voxelisation resolve sub-cell geometry automatically.
Configure in 3D
Set inflows, outflows, and tailwater through an interactive 3D preview. Upload rating curves or time-series hydrographs as CSVs.
Pick a Solver Profile & Run
Choose Robust, Fast, Detailed, or Transient — then launch on your local NVIDIA GPU. No cloud, no queues, no shell scripts.
Analyse & Export
Inspect live probes, cross-sections and flux charts as the run progresses. Export VTI to ParaView or capture multi-angle video.
Play with Physics
Every simulation is worth running in PocketFlow Pro.
Spillway and stilling basin flow
Backwater through bridge piers
Flow through culverts
Vehicle fording a flooded crossing
Constant-head tank with end weir
Dam-break wave
Solver Technology
PocketFlow Pro is built on a purpose-written CUDA solver designed specifically for free-surface hydraulic problems.
- Incompressible Navier–Stokes solver
- 2nd-order VOF with sharp free-surface capture
- 1st- and 2nd-order velocity advection schemes
- Advanced multigrid pressure solver
- Turbulence modelling: laminar, k–ε RANS, and WMLES (wall-modelled LES)
- Structured Cartesian grid with cut-cell and thin-wall support — high-fidelity resolution of sub-cell geometry
Use Cases
Water Resources
- Complex open-channel flow with hydraulic controls and transitions
- Bridge & culvert afflux analysis
- Scour potential analysis
Infrastructure
- Urban drainage and pipe network design
- Pump station hydraulics
- Flow distribution in inlet structures
Dams & Mining
- Spillway capacity analysis
- Energy dissipator design
- Scour potential analysis
- Fish passage velocity analysis
- Channel & chute hydraulics
Why PocketFlow Pro?
See where PocketFlow Pro fits in your modelling toolchain.
| PocketFlow Pro | Traditional 3D CFD | 2D Hydrodynamic Model | |
|---|---|---|---|
| Setup time | Minutes (automatic meshing) | Hours to days | Hours to days |
| Physics | 3D free-surface | 3D free-surface | 2D shallow water |
| Scripting required | None | Sometimes | Sometimes |
| Cost | $$ | Free to $$$$ | Free to $$ |
| Simulation fidelity | Full 3D velocity field | Full 3D velocity field | Depth-averaged (2D) |
| Hardware | Your own NVIDIA GPU | Workstation to HPC | Standard desktop |
Simple, Transparent Pricing
No dongles, no cloud dependency, no per-core charges.
Standard
$4,990
per year, per machine
- ✓ Everything in Trial
- ✓ Email support
- ✓ All updates included
- ✓ Commercial use licence
Enterprise
Contact us
Multi-seat, custom terms
- ✓ Everything in Standard
- ✓ Multiple machines
- ✓ Priority email support
- ✓ Custom development & validation support
- ✓ Training & onboarding
System Requirements
| Minimum | Recommended | |
|---|---|---|
| OS | Windows 10 (64-bit) | Windows 11 |
| GPU | NVIDIA GTX 900 series or newer (CUDA 5.0+) | NVIDIA RTX 3060 or higher |
| VRAM | 2 GB | 8 GB+ |
| RAM | 8 GB | 16 GB+ |
| Storage | 500 MB | 1 GB |
| Driver | Recent NVIDIA driver (latest Game Ready recommended) | Latest Game Ready driver |
AMD and Intel GPUs are not supported. The solver requires NVIDIA CUDA.
Ready to simplify your 3D hydraulic modelling?
Start with a free 14-day trial — no commitment required.
Or email us directly at contact@pocketflow.com.au