- #1
zabuzel
- 4
- 0
hello
first of all i'd like to appologise for eventual speeling mistakes i am going to make in this thread :D
ive chosen as subject for my maturity paper the coanda-effect applied in the common experiment with water flowing along the curved-convex surface of a spoon.
i want to make a model of forces that occur on the surface in order to explain why the spoon is being pulled inside the steam.after I've done some measurements I've discovered that even a slightly heavier spoon,but with another curveture holds longer in the water stream as i move the spoon further of the stream.so eventhough the force needed to hold the spoon increases by its weight, its is being hold at a distance where the less heavy one doesnt.
i ve done some comparions between this experiment and the lift on a wing and i know there are a lot of differeneces, including the type of fluid, but i am pretty sure that here,like on a wing, the form and area of the spoon convex surface is very important.
now what i wannt to do is to draw forces(velocities of water particles)on the different types of surfaces,each at some different points in order to show how the resultant forces occur, and why the other curvature doesn't produce as much lift as the other.
i would be also glad if u could tell me exactly how van der waals forces explain the coanda effect(why water bend along the convex curvature)
Thank you very much
first of all i'd like to appologise for eventual speeling mistakes i am going to make in this thread :D
ive chosen as subject for my maturity paper the coanda-effect applied in the common experiment with water flowing along the curved-convex surface of a spoon.
i want to make a model of forces that occur on the surface in order to explain why the spoon is being pulled inside the steam.after I've done some measurements I've discovered that even a slightly heavier spoon,but with another curveture holds longer in the water stream as i move the spoon further of the stream.so eventhough the force needed to hold the spoon increases by its weight, its is being hold at a distance where the less heavy one doesnt.
i ve done some comparions between this experiment and the lift on a wing and i know there are a lot of differeneces, including the type of fluid, but i am pretty sure that here,like on a wing, the form and area of the spoon convex surface is very important.
now what i wannt to do is to draw forces(velocities of water particles)on the different types of surfaces,each at some different points in order to show how the resultant forces occur, and why the other curvature doesn't produce as much lift as the other.
i would be also glad if u could tell me exactly how van der waals forces explain the coanda effect(why water bend along the convex curvature)
Thank you very much