Scale Effects of Impulse Wave Run-Up and Run-Over

AbstractHydraulic models differing from prototype scale are affected by model effects. Despite these effects, which are often negligible, they may become important in very small scales involving, for instance, small water depths. A scale family is a convenient method to detect these effects in a new test setup to demonstrate the equipment applicability. The scale family investigated here involves a previously installed test setup concerning the impulse wave run-up and overland flow. Solitary waves as a typical wave type of slide-generated impulse waves were analyzed using a pneumatic piston-type wave generator. Free surface profiles were measured to investigate the maximum flow depths and the flow front velocities. The observed scale effects led to the definition of the minimum Reynolds and Weber numbers for the considered test setup, above which scale effects can be neglected.

[1]  Sergio Montes,et al.  Hydraulics of open channel flow , 1998 .

[2]  Ying Li,et al.  Solitary Wave Runup on Plane Slopes , 2001 .

[3]  Mark Carey,et al.  An integrated socio-environmental framework for glacier hazard management and climate change adaptation: lessons from Lake 513, Cordillera Blanca, Peru , 2012, Climatic Change.

[4]  N. Kobayashi,et al.  Surf‐Similarity Parameter for Breaking Solitary‐Wave Runup , 1994 .

[5]  J. W. Kamphuis,et al.  IMPULSE WAVES GENERATED BY LANDSLIDES , 1970 .

[6]  B. Lemehaute.  An introduction to hydrodynamics and water waves , 1976 .

[7]  P. A. Madsen,et al.  Surf similarity and solitary wave runup , 2008 .

[8]  Don J. Miller,et al.  Giant waves in Lituya Bay, Alaska , 1960 .

[9]  N. Roberts,et al.  Stability analysis of the 2007 Chehalis lake landslide based on long-range terrestrial photogrammetry and airborne LiDAR data , 2012, Landslides.

[10]  Overland flow from solitary waves , 1991 .

[11]  V. Heller.  Landslide generated impulse waves: prediction of near field characteristics , 2007 .

[12]  Michael J. Briggs,et al.  Laboratory experiments of tsunami runup on a circular island , 1995 .

[13]  Willi H. Hager,et al.  Rutscherzeugte impulswellen in stauseen - grundlagen und berechnung [landslide generated impulse waves in reservoirs - basics and computation] , 2009 .

[14]  Hermann M. Fritz,et al.  Initial phase of landslide generated impulse waves , 2002 .

[15]  Costas E. Synolakis,et al.  The runup of solitary waves , 1987, Journal of Fluid Mechanics.

[16]  Steven A Hughes,et al.  PHYSICAL MODELS AND LABORATORY TECHNIQUES IN COASTAL ENGINEERING , 1993 .