ponta's avatar
ponta

May 28, 2021

217
Coanda Effect

Coanda effect is a term of fluid dynamics. The effect is that a fluid jet has a tendency to stay attached to a surface close to it. This phenomenon is caused because the fluid jet carries out the fluid between the jet and surface. The reduction of the fluid makes pressure drop in the area, so the jet is drawn towards the surface. You can observe this effect using a tap. First, you open the tap and run water, then you bring your finger to the flow of water very closely. You will see the flow is drawn to your finger even though you don't touch the water.

Corrections

Coanda Effect

"Coanda effect" is a term ofrom fluid dynamics.

It may also be required to capitalize "Effect" if that is considered part of the name of something special. It may also be better to say "The Coanda Effect."

The effect is that a fluid jet has a tendency to stay attachednear to a surface close to it.

"Attached" implies that it is interconnected, perhaps physically. From the paragraph below, it sounds like the jet is not attached, right, just close to it?

This phenomenon is caused because thea fluid jet carries out the fluid between the jet and surfacelowers the pressure of the area directly surrounding it.

Your grammar was perfect! I just didn't understand what this effect was, so I looked it up and described it in my own words. I hope I haven't described it incorrectly!

The reduction of the fluid makes pressure drop in the area, sowhile a nearby surface blocks opposing pressure from the environment, together causing the jet isto be drawn towards the surface.

What do you mean by the reduction of the fluid? I don't understand why pressure drops, but maybe that is just my own lack of science knowledge =)

You can observe this effect using a tap.

First, you open the tap and run water, then you bring your finger to the flow of water very closely.

You will see the flow is drawn to your finger even though you don't touch the water.

Feedback

Very interesting information, thanks for that!

ponta's avatar
ponta

May 29, 2021

217

The reduction of the fluid is the reduction of air molecules if it's under atmospheric condition. The stream engulf the molecules and it causes pressure drops because pressure force is molecular motions (collision to the surface).
Thank you so much!

Coanda effect is a term of fluid dynamics.

"Coanda effect" is a term ofrom fluid dynamics.

Coanda Effect

The effect is that a fluid jet has a tendency to stay attached to a surface close to it.

The effect is that a fluid jet has a tendency to stay attachednear to a surface close to it.

This phenomenon is caused because the fluid jet carries out the fluid between the jet and surface.

This phenomenon is caused because thea fluid jet carries out the fluid between the jet and surfacelowers the pressure of the area directly surrounding it.

The reduction of the fluid makes pressure drop in the area, so the jet is drawn towards the surface.

The reduction of the fluid makes pressure drop in the area, sowhile a nearby surface blocks opposing pressure from the environment, together causing the jet isto be drawn towards the surface.

You can observe this effect using a tap.

First, you open the tap and run water, then you bring your finger to the flow of water very closely.

You will see the flow is drawn to your finger even though you don't touch the water.

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