Author(s): Hauet Alexandre; Belleudy Philippe; Muste Marian
Linked Author(s): Marian Muste
Keywords: No Keywords
Abstract: This paper describes a non-intrusive method for estimating bed forms of a laboratory channel from Large-Scale PIV free surface velocity measurements. A 30m long, 091m wide, 0. 45 wide flume was specially equipped with concave bed deformations. A two steps strategy analysis was used: (i) roughly location of the positions and shapes of the bed deformations using Bernoulli’s and continuity equations and (ii) optimization of the bed forms estimations by applying different vertical velocity distributions depending on the bed deformation shape identified in the first step. Over the 20 different measurement situations created, the bed deformation estimates obtained with the optimized method were very consistent with the real bed deformation shapes. The results are encouraging, but the application of this method for bed deformation estimation in natural rivers is not straightforward at this time regarding the complexity of the bathymetry of real rivers. 1
Year: 2007