Flujo sobre obstrucciones complejas
Both in engineering and in nature there are flows which move through more or less regular arrangements of a large number of elements. This type of problem, in which a wide range of scales is covered, is called complex obstructions. This has led in general to model this type of problem by dividing it...
Guardado en:
| Autores principales: | , , , , , , |
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| Publicado: |
2019
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| Materias: | |
| Acceso en línea: | https://bdigital.uncu.edu.ar/fichas.php?idobjeto=14100 |
| Sumario: | Both in engineering and in nature there are flows which move through more or less regular arrangements of a large number of elements. This type of problem, in which a wide range of scales is covered, is called complex obstructions. This has led in general to model this type of problem by dividing it into two scales, the mesoscopic scale and the macroscopic scale. In our group we have worked on the subject of flows involving complex obstructions and in recent years have developed a system of particle image Velocimetry that, in combination with the technique of thermal anemometry used in previous works, will allow us to improve the experimental results that we have obtained so far. The first work to be developed is the characterization of the operation of hot wire anemometers in a flow through permeable media. This will enable us to know the possibilities and limitations of this instrument for the type of problems of interest. On the other hand, counting now with better experimental and numerical tools, we hope to revisit the problem of the instability of obstacles over complex obstructions. It is proposed to experimentally study the transition in this type of situation in more detail, obtaining for each case a detailed velocity field for the neutral stability condition. Finally, it is expected to be able to perform an analysis, at least preliminary, of the flow characteristics at the beginning and at the end of a complex obstruction and the fluid-dynamic structures that are originated downstream. |
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