Principle of the Coandă effect

The principle of the Coandă effect is based on the tendency of fluids to adhere to and follow a curved surface due to the forces of pressure and viscosity. Here's how it works:

• Fluid Ejection: A fluid ejected at high velocity creates a low-pressure zone around the jet.
• Surface adhesion: The fluid jet tends to adhere to a nearby surface, attracted by the pressure reduction.
• Surface tracking: The jet follows the surface as long as it doesn't deviate too much from the initial direction.
• Jet stability: Stability depends on jet speed, fluid viscosity and surface curvature.

Conditions for the Coandă effect

For the Coandă effect to work effectively, several conditions must be met:

• Jet speed: The fluid must be ejected at a high velocity to create a low-pressure zone.
• Surface Proximity: The adjacent surface must be sufficiently close to the jet.
• Smooth, continuous surface: The surface must be smooth and free from sudden interruptions.
• Ejection angle: The ejection angle must be optimal to maintain jet adhesion.

Applications of the Coandă effect

The Coandă effect is used in a variety of practical applications:

• Aerospace: Increasing the lift of aircraft wings and flaps.
• HVAC: Design of air vents for uniform air distribution.
• Automotive industry: Improving vehicle aerodynamics.
• Architecture: Efficient ventilation in buildings.

Coandă effect isufflation diffuser designed by Ceilingo, in the field of ceiling air conditioning.

Coandă effect and Sound Diffusion with the Magic Speaker

The Magic Speaker uses the Coandă effect to enhance sound diffusion. Just as a jet of fluid follows a curved surface, the sound waves emitted by the Magic Speaker's vibrating blade can "cling" to the ceiling and follow the curves of obstacles, ensuring even, enveloping sound diffusion.

Advantages of using the Coandă effect in Magic Speaker

• Omnidirectional diffusion: Sound waves are evenly distributed in all directions.
• Reverberation Reduction: Attenuation of sound reflections from walls and glass.
• Natural amplification: the vibrating blade effectively amplifies sound.
• Immersive experience: Sound envelops the listener, creating an unprecedented immersive ambience.