User:ChandlerSBaird/Project 3

Project 3

Problem Statement
A demonstration will be created to show the difference between the Bernoulli effect and the Coanda effect

Project Plan
To design and create demonstrations of the Bernoulli effect and the Coanda effect to show how they differ from each other.

Week 1 Narrative
Researched the Bernoulli and Coanda effect. It was found that the Bernoulli effect is when there is a faster moving current over a curved object of liquid or gas it creates a lower pressure causing objects to move towards the moving current. It was found that the Coanda effect is the tendency of a current of liquid or gas over a curved surface is to follow the curve of the surface.

Started to brainstorm ideas for the demonstrations of the effects.

-Incorporate a self flowing flask as the source of the current -Use the back of a spoon as the curved surface -Have stand that can switch between effects and have the viewer guess which effect is demonstrated

-Use paper structures and a makeshift wind tunnel -Have colored smoke to show path of air -Have different structures to test and demonstrate

Next tasks: What will happen next is to finish brainstorming ideas and choose one. Then the designing of the demonstration will begin, including finding materials, creating technical drawings, and any other constraints.

Week 2 Narrative
It was decided that the self flowing flask design would be used. Then the stand was to be designed and a mechanism to switch between the Bernoulli and Coanda effect was to be developed. After a first design was drawn and revised a technical drawing was created. Then the mechanism for switching between effects was devised using a simple elastic string. The string was tied around the top arm and the spoon. As the string is moved down the arm, the spoon is pushed forward into the stream. This would hold the back of the spoon to the current demonstrating the Coanda effect while when the string isn't holding the spoon out the spoon can swing so when it is pushed into the stream it will be held their demonstrating the Bernoulli effect.

The next steps will be to integrate the stand and mechanism with the funnel and tube. After they are integrated the system will need to be tested and modified if the system doesn't work.

Week 4 Narrative
The design that combined the stand to hold the mechanism and the funnel have been worked on and put into CAD, however there were a few errors occurring around the construction of the tube.

The next steps would to finish the design and combine the stand mechanism and flask and tube and try to get it working.