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The films of the CFD series, one page per video:

• Film C1: Boat propeller CFD, modeling and computational fluid dynamics calculation
• Film C2: Drone propeller CFD, hover, from model to result in six minutes
• Film C3: Aircraft propeller CFD, cruise vs static thrust at take-off
• Film C4: Hydrofoil and wing CFD, lift, drag and cavitation check
• Film C5: Wind and tidal turbine CFD, wake, rotor thrust and reliable results
• Film C6: Wind turbine CFD, mesh presets and mesh convergence compared

Do you want to check by CFD (Computational Fluid Dynamics) the propeller, wind turbine, fan or wing you designed in Heliciel? The HELICIEL PRO CFD/BEM upgrade adds to the designer a CFD test bench built on OpenFOAM 12: the current project's model is injected into it with one click, and the domain, rotating zone, mesh and solver are derived from the project. With these tutorials and videos , you will run your first complete calculation in about twenty minutes, then learn to choose a mesh preset, read a convergence, a pressure map, a wake, and compare the CFD result with the designer's BEM (Blade Element Momentum) calculation.

• Reading a CFD result in five pictures, ten minutes to learn to read everything the bench displays, without being a specialist.
• Case study no. 2: boat propeller, real thrust, pressure map and cavitation, under twelve minutes of computation.
• The presentation film (6 min): what the CFD test bench does, on a boat propeller, a wind turbine, a ducted fan and a tidal turbine; then the six case films: boat propeller, drone propeller, aircraft propeller, hydrofoil and wing, wind and tidal turbines, wind turbine and its meshes (player above, one page per film).
• Don't have a model yet? The Heliciel design tutorials (in French) cover the BEM part first: CFD comes after them, to check and to see.

To read The CFD case studies:

One machine per page, computed from start to finish, told in pictures. The first page teaches how to read the five pictures the bench produces; the others open in any order: start with the machine that looks like yours. The screenshots show the French interface, whose layout is identical to the English one.

Reading, then propellers and rotors:

Machines in their installation, wings:

1.Understanding a CFD result in five pictures The five pictures the CFD bench produces, and what each one says about your machine. Ten minutes of reading. 2.Boat propeller CFD: thrust and pressure on the blades How much does it really push, and where does the water press on the blades? The answer in pictures. 3.Aircraft propeller CFD: cruise and static thrust In flight at 200 km/h, then in static thrust, aircraft stationary: two flows with nothing in common. 4.Drone propeller CFD: hover The smallest machine of the collection, and the fastest computation: from model to result in six minutes. 5.Wind turbine CFD: power and wake How much energy does it take from the wind, with what load on the mast? The wake in pictures.

6.Tidal turbine CFD: a 16 m rotor in the current Water is 900 times denser than air: the loads change scale, the method does not. 7.Ducted fan CFD: duct and radiator Does the flow get through? CFD answers with the pressure all along the duct. 8.Wing CFD and hydrofoil: lift and drag Lift, drag, lift-to-drag ratio: three numbers, and the picture of the air that makes them.   See also: Design tutorials (BEM): 10 complete projects (in French) Get the PRO CFD/BEM upgrade

To follow Videos:

The videos play in the player at the top of the page (choose the video from the player's list). Files and subtitles are downloadable below.

Video list:

Video	Duration	Language	Files
C1: Boat propeller CFD: modeling and computational fluid dynamics calculation	5 min 34	English, voice-over + subtitles (French version)	MP4 (66 MB) · SRT
C2: Drone propeller CFD: hover, from model to result in six minutes	4 min 05	English, voice-over + subtitles (French version)	MP4 (30 MB) · SRT
C3: Aircraft propeller CFD: cruise vs static thrust at take-off	3 min 46	English, voice-over + subtitles (French version)	MP4 (43 MB) · SRT
C4: Hydrofoil and wing CFD: lift, drag and cavitation check	6 min 14	English, voice-over + subtitles (French version)	MP4 (28 MB) · SRT
C5: Wind and tidal turbine CFD: wake, rotor thrust and reliable results	4 min 19	English, voice-over + subtitles (French version)	MP4 (43 MB) · SRT
C6: Wind turbine CFD: mesh presets and mesh convergence compared	5 min 41	English, voice-over + subtitles (French version)	MP4 (77 MB) · SRT
The PRO CFD upgrade: presentation of the CFD test bench (boat propeller, mesh presets, results, wind turbine, ducted fan, tidal turbine)	5 min 19	English, voice-over + subtitles	MP4 (108 MB) · SRT
The PRO CFD upgrade, French version: presentation of the CFD test bench (boat propeller, mesh presets, results, wind turbine, ducted fan, tidal turbine)	5 min 07	French, voice-over + subtitles	MP4 (121 MB) · SRT

Film chapters (English / French):

• 0:00 The designer: a boat propeller and its BEM results (FR 0:00)
• 0:49 The PRO CFD menu injects the project into the test bench (FR 0:41)
• 1:34 The mesh preset scale, from level 1 to level 8 (FR 1:06)
• 2:25 Three commands: mesh, calculate, view (FR 1:57)
• 2:55 Mesh ready: the hybrid BEM-CFD method (FR 2:49)
• 3:41 Results: pressure on the blades, wake, slice, mesh quality alert (FR 3:05)
• 5:10 4 m wind turbine in free flow (FR 4:11)
• 5:29 Ducted fan (FR 4:24)
• 5:44 16 m tidal turbine: the scale changes, the procedure does not (FR 4:33)

The design videos (BEM part: first propeller, wind turbine, wings, contra-rotating, multirotors) remain on the Didacticiels HELICIEL page.

To go further The technical collection, 20 tutorials:

These twenty more technical pages are for those who want to understand the method: case folder, rotating mesh, computation phases, convergence, turbulence, boundary layer, validation. They are not needed to use the bench, but they explain what it does.

The collection reads in order: the first twelve tutorials form the core path on a propeller, the next ones apply the same procedure to each machine family, and the last ones cover method and deliverables. Each page ends with a link to the next one.

Core path (1 to 12):	By machine family (13 to 16):	Method and deliverables (17 to 20):
1.First CFD propeller simulation The first complete run, from the BEM model to the pressure field on the blades. 2.Reading the OpenFOAM case folder What Heliciel writes to the case folder and the automated blockMesh, snappyHexMesh, foamRun chain. 3.Choosing the mesh preset The same wing meshed at levels 1, 2 and 3: what each refinement notch buys you. 4.The MRF zone and Phase 1 The rotating cylinder (MRF, Multiple Reference Frame) in the 3D viewer and the steady-state Phase 1. 5.Phase 2 with sliding mesh From frozen rotation to real rotation: the unsteady Phase 2 and the forces compared. 6.Comparing BEM and CFD The same propeller by both methods, and how to interpret the gap. 7.Reading the convergence of a run Telling a converged run from a finished run: residuals, forces, parallel computing, resume, divergence. 8.Turbulence models Why a wing and a propeller are not computed the same way: Spalart-Allmaras, k-omega SST, iso-surfaces. 9.Boundary layer and y+ Stacking the prismatic layers on a blade and reading its y+ for the chosen preset. 10.Reading a pressure map Surface pressure, vertical and cylindrical slices through the domain, interpretation. 11.Where the forces come from Pressure and friction integrated into lift, drag, thrust and torque, boundary by boundary. 12.Checking an airfoil polar A high-aspect-ratio wing swept through incidence, compared with the Cl/Cd polars from the profile database.	13.Marine propeller and cavitation A boat propeller end to end: immersion and absolute pressure, three presets, Phases 1 and 2, cavitation risk. 14.Wind turbine and tidal turbine An energy-capture rotor end to end: Betz limit, presets compared, Phases 1 and 2, wake. 15.Fan in a closed duct Cylindrical domain, duct presets, wall conditions, and the real cost of meshing a duct. 16.Aircraft propeller, cruise and static thrust Two different runs, and why static thrust requires Phase 2.   See also: Design tutorials (BEM) (in French): 10 complete projects Didacticiels HELICIEL: general list Get the PRO CFD/BEM upgrade	17.The optimisation loop From the flaw seen on the run to the corrected blade: the BEM ↔ CFD loop run end to end. 18.Calibrating on a reference A propeller from the Wageningen B-series, Kt and Kq compared with published tables. 19.From the hull to the propeller Naval architecture: Kelvin wake waves, hull resistance, propeller at its operating point, CFD verification. 20.The deliverable calculation file Archiving a case, producing a report, documenting mesh convergence: every figure traceable.