Physics 34 Fluid Dynamics (20 of 24) Force Due to Drag Coefficient
HTML-код
- Опубликовано: 27 мар 2015
- Visit ilectureonline.com for more math and science lectures!
In this video I will find the force associated with the drag coefficient.
Next video in this series can be seen at:
• Physics 34 Fluid Dyna...
Excellent Professor. Thank you for another great lecture.
professor, I am doing a lab with this same experiment but with a tennis ball. I measured the depth the ball goes into the liquid with centimeters then determined velocity. If my units for my velocity are cm/second, will this mess up my final answer for Drag force? or force me to do any extra conversions at the end (after solving for the drag force using the formula you discuss) ?
Hey could you help me please I want to calculate Cx and Cz (drag and lift coefficient) of a 46m/s wind speed at an inclined panel with 30° incidence angle the force should be daN/m² or we could calculate the Drag and lift force on a panel of a 1.7x1 = 1.7m² area. SEARCHING SINCE A WEEK BUT NOTHING FOUND ON INTERNET. MECAFLUX software GIVES An automatic RESULT BUT I couldn't calculate manually.
Thank u. Long time I searched for this explanation. 👍🏻👍🏻🙏🏽🙏🏽
Glad it was helpful!
Nice video, but since the velocity would be changing constantly until terminal, can you cover how the drag force would change over change in time and affect the kinematics of the object.
It turns out that the terminal velocity is reached very quickly. We have an example in the differential equation videos that shows how the terminal velocity is reached.
how to calculated FD in oval object? please help me. i need this formula for my thesis
Hi doctor ,
How is your day , could you please tell me what is the project area of disk thanks ?
Hi Michel, How did you find out the drag coefficient of the shape listed here and in the previous video? I am trying to look at the drag coefficient of a car in computational fluid dynamics. I can find the values for the velocity, Density of air, the force newtons and frontal area of the car.
That is something that would differ from car to car and it would have to be determined experimentally. You can probably find a range of values on the internet.
Another fine lecture.
You are really getting into fluid dynamics. 🙂
There is a significant mistake determining the area A. It is A=2*pi*r*(Length 1), but not the cross section area. That`s why the Cd does not depend on the dimensions of the body, but only on its form
Ac is the cross sectional area
how to calculate the floating speed of an object
The object speed which reached at certain top of the height how to calculate ?
did you find it
Nice video thank you so much
Glad you liked it. 🙂
How to find forces at a point on the sphere in low reynolds number flow?
At terminal velocities, the sum of the forces always add up to zero. When the object is not at terminal velocity it requires a differential equation. We have an example with a parachute drop. ruclips.net/video/DS78wFkrBmE/видео.html
Hi! Why do you count area by that formula? Isn't the area formula of a sphere 4*r^2*Pi??
A is not surface area
It is area of cross section
That is correct, it is the cross-sectional area.
And, professor, what's the main difference between Drag Force and Stoke's force?
We usually refer to Stoke's law which is a mathematical calculation to deteremine the drag force.