{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

5_12 - supports itself above the ground It is known that...

This preview shows page 1. Sign up to view the full content.

Problem 5.12 Hovering platform The sketch shows a hovering platform of half-width b and length L , the latter being large compared with b . The platform has a perforated bottom through which air is pumped at a steady total volume flow rate Q , the air leaving the perforations with a vertically downward velocity that is the same at all holes. The total weight of the loaded platform is W . We are interested in deriving an expression for the height h at which the platform
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: supports itself above the ground. It is known that the Reynolds number for the flow in the gap under the platform is very high. (a) Is Bernoulli's equation applicable in the gap? Explain. ANSWER (b) Derive an expression for h assuming that that the flow is incompressible and the effect of shear forces on the horizontal flow in the gap is negligible. Express h in terms of the given quantities W, b, L and the gas density . HINT HINT 2 ANSWER...
View Full 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