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Here is an example of a boat propeller, designed in Heliciel.

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This propeller has seven blades and a diameter of 1.14 m. It turns at one hundred and five revolutions per minute, in sea water.

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The blade element design approach gives thrust, torque and efficiency.

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And above all: the geometry that produces them.

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Heliciel is a geometry modeller for propellers and wings, built on an optimal efficiency assumption.

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The PRO CFD upgrade lets you confront the model Heliciel produced with a CFD test bench.

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The PRO CFD menu injects the current project's model into the CFD test bench.

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Heliciel PRO CFD opens with the project's propeller already in place.

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Geometry exported, domain built around it, fluid, speed and rotation speed read from the project.

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Nothing to retype. Nothing to convert: the high definition model is loaded, you only select the meshing preset.

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The mesh is chosen on a scale of presets, from level one to level eight.

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Up to level five or six, the computation fits on a mechanical design office or university desktop: eighty seven thousand cells, three and a half minutes of meshing.

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Levels six, seven and eight climb in accuracy for professional CFD machines. Heliciel states the hardware they need: sixty four gigabytes and sixteen cores at level eight.

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Three commands: mesh, compute, look.

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Domain, rotating zone, refinements, boundary layers: everything is derived from the project, mesh and solver are matched to it.

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This setup work is what usually makes propeller CFD complex and costly to use. But PRO CFD goes further:

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By building a solver predefinition, the Hybrid BEM-CFD method of Heliciel PRO drastically cuts CFD computation time.

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Here is one example of a meshing preset: eighty five thousand one hundred and nine cells. Mesh ready.

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The CFD study shows the action of the fluid on the propeller.

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The pressure on the blade skin, face by face.

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One face pushes, the other pulls: this is the map of the thrust.

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The streamlines coil behind the disc: this is the wake.

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And it contracts.

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A cut through the volume shows the jet forming behind the disc.

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And when the bench detects an inaccuracy caused by mesh quality, it writes it down. In plain words. In the results.

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The same procedure, on other types of propeller.

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A four metre wind turbine, in free stream.

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A ducted fan, where the whole flow passes through the duct.

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A sixteen metre tidal turbine. The scale changes, the procedure does not.

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Heliciel PRO CFD: the designer you know, and the digital wind tunnel in the same window.