Paper Information

Journal:   JOURNAL OF APPLIED FLUID MECHANICS (JAFM)   JANUARY 2008 , Volume 1 , Number 1; Page(s) 1 To 10.
 
Paper: 

A SIMPLE SOLUTION OF THE LAMINAR DAM BREAK WAVE

 
 
Author(s):  CHANSON H.*
 
* DEPARTMENT OF CIVIL ENGINEERING, THE UNIVERSITY OF QUEENSLAND, BRISBANE QLD 4072, AUSTRALIA
 
Abstract: 
The sudden release of a mass of fluid in a channel generates a highly unsteady flow motion, called dam break wave. While industrial fluids exhibit sometimes non-Newtonian behaviors, the viscous fluid flow assumption remains a useful approximation for simplified analyses. In this study, new solutions of laminar dam break wave are proposed for a semi-infinite reservoir based upon the method of characteristics. The solutions yield simple explicit expressions of the wave front location, wave front celerity and instantaneous free-surface profiles that compare favorably with experimental observations. Both horizontal and sloping channel configurations are treated. The simplicity of the equations may allow future extension to more complicated fluid flows.
 
Keyword(s): DAM BREAK WAVE, LAMINAR FLOW, ANALYTICAL SOLUTIONS, METHOD OF CHARACTERISTICS
 
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