{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

hw2 - S09

# hw2 - S09 - Chemical Engineering 150A Spring Semester 2009...

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

Chemical Engineering 150A Spring Semester, 2009 Homework 2: Dimensional Analysis and Pipe Flow Problem 1 The power output of a hydraulic turbine depends on the diameter D of the turbine, the density ρ of water, the height H of water surface above the turbine, the gravitational acceleration g , the angular velocity ω of the turbine wheel, the volumetric discharge rate Q of water through the turbine, and the efficiency η of the turbine. a) Using the Buckingham Pi Theorem, generate a set of appropriate dimensionless groups using the density of water, turbine diameter, and angular velocity of the turbine wheel as the core group of variables. b) What two criteria does the set of core variables have to satisfy? Problem 2 A long structural component of a bridge has the cross section shown in the figure below, with D = 0.1 m and H = 0.3 m. We would like to determine the drag per unit length, l D , on this structure at a representative wind velocity of 50 km/hr (standard air can be assumed) through the use of a small-scale model that is to be tested in a water tunnel.

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