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Observation of an Hydraulic Jump in a Falling Soap Film

Steers, Stanley FM (2010) Observation of an Hydraulic Jump in a Falling Soap Film. Undergraduate Thesis, University of Pittsburgh. (Unpublished)

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For several decades, gravity-driven soap films have served as a convenient system in which to study two-dimensional turbulence due to the relatively small thickness (on the order of microns) when compared to the surface area of the film. This thesis presents evidence of an heretofore unobserved phenomenon in soap films: a sudden increase in the thickness of the film by approximately 200 to 300 percent, which occurs over a distance of only several centimeters in the vertical flow direction. Both velocity and thickness measurements confirm this transition in thickness as well as its dependence on the width of the soap film. In collaboration with theorists from the University of Illinois Urbana-Champaign, this thickness transition is explained as an hydraulic jump. The flow upstream and downstream is confirmed to be supercritical and subcritical, respectively, when compared to the propagation of elastic waves in the film as hydraulic jump theory would predict.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
Steers, Stanley FMsfs13@pitt.eduSFS13
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairGoldburg, Waltergoldburg@pitt.eduGOLDBURG
Committee MemberBoyanovsky, Danielboyan@pitt.eduBOYAN
Committee MemberBandi,
Committee MemberShepard, Paulshepard@pitt.eduSHEPARD
Committee MemberWu, Xiao-Lunxlwu@pitt.eduXLWU
Date: 14 May 2010
Date Type: Completion
Defense Date: 8 April 2010
Approval Date: 14 May 2010
Submission Date: 20 April 2010
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Institution: University of Pittsburgh
Schools and Programs: Dietrich School of Arts and Sciences > Physics
David C. Frederick Honors College
Degree: BPhil - Bachelor of Philosophy
Thesis Type: Undergraduate Thesis
Refereed: Yes
Uncontrolled Keywords: 2D Turbulence; Fluid Dynamics; Shocks
Other ID:, etd-04202010-191754
Date Deposited: 10 Nov 2011 19:39
Last Modified: 15 Nov 2016 13:41


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