Abstract
This article presents a novel installation for the development of hybrid physical-numerical flood models in an augmented reality environment. This installation extends the concept introduced by the well-known Augmented Reality-SandBox (AR-Sandbox) module, which presents a more educational, and less research-based and professional application. It consists of a physical scale topography built in a sandbox into which other elements (such as buildings, roads or dikes) can be incorporated. A scanner generates, in real time, a Digital Terrain Model (DTM) from the sandbox topography, which serves as a basis for the simulation of overland flow using professional hydraulic software (Iber+). The hydraulic and hydrological parameters (surface roughness, inlet discharges, boundary conditions) are entered with a simple Graphical User Interface (GUI) developed specifically for this project, as indeed was the entire system that allows the visualization of the simulation results. This allows us to obtain quantitative results of flood extension and magnitude, which are represented directly over the physical topography, yielding a realistic visual effect. This installation is conceived for both educational and professional uses. An example of its use is presented, through which its accuracy can be appreciated, and which also illustrates its potential.
Highlights
There have been two methodologies for the analysis of hydraulic phenomena: numerical methods and physical models
Observing a problem in three dimensions, perceiving how water flows over a floodplain, and proposing solutions to avoid this, can be done in a much more intuitive way with a physical model than in a numerical model [2]
Beyond influence of parameters such as basin slope, permeability or the macro-roughness in the surface flow the field of hydraulic engineering, experimental tests are being designed for thelead reproduction in the calculation, for instance, the differences in the time-flow distribution that would the permeability sandbox of a topography delivered on a physical support, so that the colors of the projection indicate in urban and green areas, considering the infiltration processes and the temporary storage in permeable whether the[44]
Summary
There have been two methodologies for the analysis of hydraulic phenomena: numerical methods and physical models. A collaborative approach to flood problems offers various advantages These include being able to discuss and debate technical solutions in a group while observing the flow in a physical model; testing alternatives in real time by means of small changes in the physical reality, carried out quickly; and seeing how the water varies its circulation, for example, by opening a diversion or by placing a barrier to the flow to protect an urban area. This article proposes a hybrid solution, based on the development of a small-scale physical model, the calculation of water flow by numerical methods and the representation of the solution by projecting the results of the numerical model onto the physical model, which creates a feeling of “virtual water” This is done in a rapid work cycle, which allows for the observation of solutions practically in real time.
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