Is the Jet Fan's Reliability Enhanced by the Coanda Effect?

  • Thread starter kach22i
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In summary, the conversation discusses the Coanda Effect and its application in the design of a "Jet Fan" for hovercrafts. The Coanda Effect states that the average velocity and pressure of a jet are higher compared to a conventional jet at the same distance from the slot. This allows for higher momentum and mass flow, making it ideal for hovercrafts. However, the validity of the business plan for this technology is questionable.
  • #1
kach22i
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0
Coanda Crazy...The "Coanda Effect"
http://www.linux-host.org/energy/scoanda.htm
scor8.gif



Does this pan out with anyone?
This means that the average velocity at any point in the Coanda jet is higher than in a conventional jet at the same distance from the slot. It follows then that the pressure is lower at any comparable distance from the slot and the momentum and mass flow are higher at the same points.

The business plan:
http://www.businessplans.org/JetFan/JetFan01.html

http://www.businessplans.org/JetFan/JetFan03.html

http://www.businessplans.org/JetFan/JetFan05.html

JetFan3.jpg


Just like any other impeller?
 
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  • #2
Anybody stupid enough to say "our fans never stall" (as in your first link) is at best a marketing consultant, and probably a crackpot.

I didn't bother to read the any further.
 
  • #3
AlephZero said:
Anybody stupid enough to say "our fans never stall" (as in your first link) is at best a marketing consultant, and probably a crackpot.

I didn't bother to read the any further.

You mean this quote?
http://www.linux-host.org/energy/scoanda.htm
Hovercraft require high volume air flow at moderate pressures. The "Jet Fan" can provide higher pressure when needed such as in heavy seas as it does not stall due to fluctuating back pressure, and it also occupies less space.

The business plan looks rather snake-oil like, but I'd hate to let science fall victim to bad marketing.
 

FAQ: Is the Jet Fan's Reliability Enhanced by the Coanda Effect?

What is the Coanda Effect?

The Coanda Effect is a phenomenon in fluid dynamics where a stream of fluid follows a curved surface rather than a straight path.

Who discovered the Coanda Effect?

The Coanda Effect was discovered by Romanian physicist and engineer Henri Coanda in the early 20th century.

How is the Coanda Effect used in technology?

The Coanda Effect is used in various technologies, such as aircraft design, medical devices, and industrial processes. It allows for better control and manipulation of fluid flow.

What are some real-life examples of the Coanda Effect?

Some real-life examples of the Coanda Effect include the flight of planes, the flow of water in a faucet, and the design of medical inhalers.

What are the limitations of the Coanda Effect?

The Coanda Effect is limited by factors such as the surface curvature, air viscosity, and flow rate. It may also be affected by external factors such as turbulence and surface imperfections.

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