Problem 2.17

# Problem 2.17 - Problem 2.17[Difficulty 4 Given Pathlines of...

This preview shows pages 1–2. Sign up to view the full content.

Problem 2.17 [Difficulty: 4] Given: Pathlines of particles Find: Conditions that make them satisfy Problem 2.10 flow field; Also Problem 2.11 flow field; Plot pathlines Solution: The given pathlines are x p a sin ω t ( ) = y p a cos ω t ( ) = The velocity field of Problem 2.12 is u K y 2 π x 2 y 2 + ( ) = v K x 2 π x 2 y 2 + ( ) = If the pathlines are correct we should be able to substitute x p and y p into the velocity field to find the velocity as a function of time: u K y 2 π x 2 y 2 + ( ) = K a cos ω t ( ) 2 π a 2 sin ω t ( ) 2 a 2 cos ω t ( ) 2 + ( ) = K cos ω t ( ) 2 π a = (1) v K x 2 π x 2 y 2 + ( ) = K a sin ω t ( ) ( ) 2 π a 2 sin ω t ( ) 2 a 2 cos ω t ( ) 2 + ( ) = K sin ω t ( ) 2 π a = (2) We should also be able to find the velocity field as a function of time from the pathline equations (Eq. 2.9): (2.9) dx p dt u = dx p dt v = u dx p dt = a ω cos ω t ( ) = v dy p dt = a ω sin ω

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern