User:Mkhan4793/enes100/Bernoulli Effect

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Give instructor top 3 project choice list
Bernoulli Effect

Model Boat

Corn Starch

Write problem statement
Demonstrate the difference between a bernoulli and a condo effect by making two different ones. Look at videos and learn more about the effects so more can be applied to the project

Assign Task1
Open the floppy disk and show the bernoulli effect. and also show the coanda effect

Compare actual work done to Task1
Got a old Compact disk floppy drive from the 80's. Opened it up and studied the bernoulli effect applied to it. Now we will differentiate that from the coanda effect

Week1 Narrative
Upload photos to wikimedia. Upload video to youtube. Convert all spreadsheets, documents, and presentations to wiki format and create wiki subpage of your page for each of them. Link to them here in a narrative that tells a story. High light the problems (engineering problems) you had and how you solved them. Done



Week1 Peer Review
Go to each team mates weekly summary wiki page. Read their activities and narrative. Then go the associated discussion page. Say something positive on this page. Try some constructive criticism. Add your name and a signature ~ by entering four tildes in a row to create a time and date stamp. Create a new category if another team mate has already commented here.

Assign Task2
I am going to upload some pictures and look up some videos on the bernoulli and coanda effect and will compare my studies with my teammates.

http://www.youtube.com/watch?v=pIRXVPhhjuY&feature=related

http://www.youtube.com/watch?v=AvLwqRCbGKY

Compare actual work done to Task2
I tried to show the difference between the Bernoulli and coanda effect by using the hair dryer and the ping pong ball. I basically read this link and got most of the information from this site. I used the air dryer to make the ping pong ball float on air and then make the ball move from one air dryer to another. That was done by change in the air pressure. The ball moved onto the other dryer when the dryer's air pressure was lowered. Due to the low air pressure, the balled moved sideways to the other dryer applying its mass to the other side.

Week2 Narrative


added pictures of the bernoulli/coanda effect i was demonstrating by the change of air pressure.

Week2 Peer Review
Done

Assign Task3
My main goal now is to make the ball float upside down in the air using the hair drier and show the bernoulli principals that will apply to it. I have bought a hair drier at home and will test all the possible things and other options that can be done to demonstrate the bernoulli effect. I will also try to show and why some videos on you tube are not Bernoulli effect as they have mentioned. That is my main goal over the weekend.

Compare actual work done to Task3
With working with my team mates,we came up to many decisions on how to do the Bernoulli effect. I tried to do the bernoulli effect with a dryer and ping pongs balls. I was trying to float the ping pong ball over the hair dryer and thought that it was a Bernoulli effect. I was misunderstood with the concept of the air pressure that was applied to the ball, but after doing some research through this website http://www.discoverhover.org/infoinstructors/guide8.htm, I found out that I misunderstood the concept and was applying the coanda principals...

My demonstration is shown in the video http://www.youtube.com/watch?v=Z95TKv1YEPA&feature=related. The Air was applying directly on the ball from the bottom causing the ball to float in the air while Bernoulli's principle tells us that air that is moving at high speed has lower pressure than still air. The air moves around the ball to create a pocket around the ball of low pressure air. When the ball moves to the side of the pocket, it will be pushed back in. And the upward force from the air stream keeps the ball aloft.

Week3 Narrative
Added a picture that tell what we were doing for the Bernoulli effect. Over the weekend, I looked up and found a video that clearly described about the Bernoulli's effect. In the video that I found, the bernoulli effect is explained on the basis of law of conservation of energy and explains that movement changes the static pressure. The following is the link to the video. http://www.youtube.com/watch?v=kXBXtaf2TTg&feature=related. This video also talks about the Bernoulli equation that are applied to the effect. In the video, they talk how an airplane is lifted in the air with the principals of Bernoulli effect. The curved top of the wing in the production of lift is much over weighted. A wing at zero angle of attack needs enormous speed to create usable lift. I read that a Cessna 210 would need to reach 400 mph to take off. At the time of taking off, the plane would go at high speed and lift up in the air with the high pressure applied to the wings and fluid pressure going along a constant velocity. The Bernoulli principal in the video clearly states that the total energy in a steadily fluid system is a constant along the flow path. Fluid pressure is inversely proportional to its velocity.

I then looked up at the mechanics on how the jet engines works... The video http://www.youtube.com/watch?v=ON0sVe1yeOk&feature=related states that a turbo fan engine has a core section that produces power which then produces thrust. Thrust is a force created by the acceleration of air. The equation is as follows: Thrust = AIR FLOW X CHANGE IN VELOCITY. It illustrates Newtons second law of motion which is expressed as Force = Mass X acceleration. This is the force that prepeles the aircraft. The fan rotates 28 hundred times a minute during take off. The higher the pressure, the more combustion would be added. It also has blades. The shape of the LP and HP blades are like wings. On one surface they compress the air and on the other side they expand the air just like a wing. If the tuel air mix are combined at too low or too high a speed then the engine may stall after ignition. The nature of the actual lifting force on a real airplane wing is complex. You can say that a Bernoulli effect creates a pressure difference between the top and the bottom of the airplane wing. However, this pressure difference, in the absence of air deflection downward cannot explain the lift required to keep the airplane up in the air. According to Newton's third law, there must be deflection of the air downward.

Week3 Peer Review
Done

Assign Task4
I will now do some more demonstrations of the Bernoulli effect with the help of the information I got by researching. I will try to explain how the video http://www.youtube.com/watch?v=fgHvC55AKig showing a Bernoulli effect is actually a Coanda effect. With the help of that, I will make a Bernoulli demonstration that will apply the Bernoulli principals and not the Coanda. This time I will do the demonstration by two balloons. The balloons will be tied up and hung down. I will then blow in between which will then cause the balloon to come together. This will happen because the speed of the air in between will be greater then the surrounding air.

Compare actual work done to Task4
Did many different demonstration of Bernoulli effect, but after doing some research and doing different kinds of experiments, I found out that the experiments were more of a Coanda effect.

Week4 Narrative
The following are the link to the videos where I did my demonstrations. http://www.youtube.com/watch?v=Z95TKv1YEPA&feature=related, http://www.youtube.com/watch?v=Q7psavgw98Q&feature=channel_video_title I worked on these demonstrations to show the Bernoulli effect, but because of some misunderstanding, I was applying Coanda principals. I was not successful in showing the Bernoulli effect.

Week4 Peer Review
Done

Complete Project Page
done

Start Next Project Week0 activities
Make the team and User pages for the new project that I will be working on. (Model Boat) Get all the materials that are needed in order to make the model boat.