When this is the case, you will have to build a fence on a slope. Homes built on the side of hills won’t have much flat space if any. However, some yards have more than others. Partial agreements were found between theoretical models and our results.Even the flattest of yards have a change in grade or elevation. Different flow regimes were observed, which depend on: the plane inclination, the setup geometry, the volume, and characteristics of the fluid. For each test, the evolution of the free surface was recorded in 3 dimensions. 56 different flow configurations, with a wide range of inclinations, were finally tested with Newtonian and viscoplastic fluids. We compute the phase of the projected pattern, unwrap the phase, and then apply a calibration matrix to extract the flow thickness from the unwrapped phase. We developed algorithms to post-process the image data, determine the spreading rate, and generate whole-field 3-dimensional shape measurements of the free-surface profile.
The camera records how regular patterns projected onto the surface are deformed when the free surface moves. To measure the free-surface profile, a novel imaging system consisting of a high-speed digital camera coupled to a synchronized micro-mirror projector was developed. We precisely control initial and boundary conditions.
In a dam-break experiment, up to 120 liters of fluid can be released from the reservoir down the 4-m long inclined plane. At 6-m long, 1.8-m wide, and 3.5-m high, the structure is probably the largest laboratory setup of its kind in the world. To simulate flow avalanches in the laboratory, we created a unique experimental setup consisting of a metallic frame supporting a reservoir, an inclined aluminum plane, and a horizontal run-out zone. The objective of this thesis was to increase our understanding of gravity-driven geophysical flows by developing a new platform to simulate avalanches of fluid in the laboratory.
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