Flume water air12/15/2023 ![]() ![]() This allows to measure bed forms during morphodynamic experiments, without removing the water from the flume. The device consists of a line laser coupled to a 3‐D camera, which makes use of triangulation. N2 - A new measurement method for continuous detection of bed forms in movable bed laboratory experiments is presented and tested. T1 - Application of a Line Laser Scanner for Bed Form Tracking in a Laboratory Flume This is confirmed in a moving bed experiment with polystyrene. ![]() This is promising for bed form tracking applications in laboratory experiments, especially when lightweight sediments like polystyrene are used, which require smaller flow velocities to achieve dynamic similarity to the prototype. Although 71% of the data is lost in a pilot moving bed experiment with sand, still high agreement between flowing water and dry bed measurements is found when a robust LOcally weighted regrESSion (LOESS) procedure is applied. We conclude that the absolute measurement error increases with increasing flow velocity, its standard deviation increases with water depth and flow velocity, and the percentage of missing values increases with water depth. A correction is applied for the effect of laser refraction at the air‐water interface. This is confirmed in a moving bed experiment with polystyrene.Ībstract = "A new measurement method for continuous detection of bed forms in movable bed laboratory experiments is presented and tested. A new measurement method for continuous detection of bed forms in movable bed laboratory experiments is presented and tested. ![]()
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