News Column

Reports from Auburn University Highlight Recent Findings in Hydraulic Engineering

February 19, 2014



By a News Reporter-Staff News Editor at Journal of Engineering -- Fresh data on Hydraulic Engineering are presented in a new report. According to news originating from Auburn, Alabama, by VerticalNews correspondents, research stated, "Among the various applications of the shallow water equations (SWEs) is the simulation of gravity currents (GCs). The SWEs are used as an alternative to track GC motion without explicitly dealing with turbulent processes, and constitute an intermediate solution between simpler integral models and more comprehensive models based on the Navier-Stokes equations."

Our news journalists obtained a quote from the research from Auburn University, "While the SWE equations have been successfully applied to a number of problems involving the release of dense fluids into deep ambient conditions, a more complex application is the simulation of the lock-exchange problem. In this particular problem, the ambient velocity influences the velocity as well as the shape of the GC, especially in the initial slumping stage. Features resembling discontinuities between the two layers are generated, and one numerical solution strategy has been to explicitly track such discontinuities. This work presents a shock-capturing, two-layer SWE model to simulate lock-exchange flows and its discontinuities. The main contributions are a reformulated mathematical model that incorporates the upper layer effects to the GC flow as well as a more efficient numerical solution for the flow at the GC front."

According to the news editors, the research concluded: "The resulting numerical model was implemented using the finite-volume method (FVM) with an approximate Riemann solver, and the results compare well to existing numerical models as well as experimental data collected during this investigation."

For more information on this research see: Finite-Volume and Shock-Capturing Shallow Water Equation Model to Simulate Boussinesq-Type Lock-Exchange Flows. Journal of Hydraulic Engineering, 2013;139(12):1223-1233. Journal of Hydraulic Engineering can be contacted at: Asce-Amer Soc Civil Engineers, 1801 Alexander Bell Dr, Reston, VA 20191-4400, USA. (American Society of Civil Engineers - www.asce.org; Journal of Hydraulic Engineering - ascelibrary.org/hyo)

The news correspondents report that additional information may be obtained from T.M. Hatcher, Auburn University, Dept. of Civil Engn, Auburn, AL 36849, United States.

Keywords for this news article include: Auburn, Alabama, United States, Hydraulic Engineering, North and Central America

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Source: Journal of Engineering


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