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Wave design project
The project aim to create a solid scientific base to design river waves in open channel and to create spots for freestyle kayaking and surfing. About this subject few studies have been done but not enough to achieve satisfactory results. During the studies conducted for my thesis in physics I got the theoretical background that permits to understand waves.

The work I have done is summarized in the following abstract and it's about the undular jump, the simplest wave in open channel. To make this wave no drops or step are necessary just a fast flow crashing into a slower flow. The theorical parameters to make this happen have been studies in my studies and few numerical simulations have been done to understand the influence of differents features. Further studies and experiments will be conducted during the construction of artificial channels and play spot.

For more information you can contact me.

This is the first wave created following the ideas coming from my thesis. The result is a nice wave in the slalom camp of Valstagna.

UNDULAR JUMP, NUMERICAL MODEL AND SENSITIVITY ANALYSIS

The open channel flow is the object of this work which aims to study near-critical flows through numerical simulations. As first step, the problem of the undular hydraulic jump is defined and the basic open channel equations are introduced. We use the near-critical flow of the undular jump to validate the numerical model. The numerical simulations are performed by using the commercial code Fluent with VOF multiphase model, pressure based explicit solver, geometric interface reconstruction and standard k-epsilon turbulence model. Options and specific details of the model are presented in the corresponding sections. The model shows that wide open-channel flows can be studied with two dimensional grids. In this work we also report simulations and the sensitivity analysis of the undular jump to better understand this phenomenon. Inflow organization in a vertical shear seems to be a necessary condition to create a detachment of the boundary layer that necessarily has to occur in the undular jump. As a possible application, this model can be used to better understand wave formation mechanism and, with a three dimensional implementation, design near-critical open channel for recreational use. Computational cost are examined in the conclusions because it must to be considered for large or three dimensional domains.

 
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