CICYTTP 12500
CENTRO DE INVESTIGACION CIENTIFICA Y DE TRANSFERENCIA TECNOLOGICA A LA PRODUCCION
Unidad Ejecutora - UE
artículos
Título:
The sensibility of spatial resolution grid in a simulation of a severe thunderstorm that occurred in Aranguren-Argentina using sequential and parallel computational techniques
Autor/es:
CÉSAR A. AGUIRRE, RODRIGO R. PAZ, ARMANDO B. BRIZUELA, GERMÁN REARTE, CLAUDIO A. FONTANA Y MARIO R. LÓPEZ
Revista:
ATMOSPHERIC RESEARCH
Editorial:
ELSEVIER SCIENCE INC
Referencias:
Año: 2011
ISSN:
0169-8095
Resumen:
In the design of civil structures it is necessary to consider the efect of dynamic loads caused by the changes of the meteorological conditions such as wind speeds or ice deposits. For the calculation of the structures of electrical transmission networks, the Standard AEA (Asociaci´on Electrot´ecnica Argentina) is used. This Standard specifies the value that must be assigned to the load by efect of the wind. This value is obtained from the meteorological records measured at the conventional stations such as those of the Meteorological National Service. Nevertheless it is necessary to carry out local studies with updated information to fit this parameter, considering the rugosity and in certain cases the relief of the ground. The computational mechanics addresses this problem and is currently begin used to estimate the values of maximum winds by the simulations of meteorological severe events but it is necessary to evaluate the results of this tool in order to know the precision in relation to the parameters of the numerical model. This work shows the use of Large-eddy Simulation considering two options in the election of elements size used for a geographical grid domain in the event of a thunderstorm that occurred in Aranguren, Argentina, in 1998. In the first option a processor is used to compute this event through a 406 m grid-spacing in horizontal direction and in the second option a four processors parallel method is used to obtained a more refinemed 200 m grid-spacing in horizontal direction. By using the last option it is possible to simulate the ocurrence and evolution in space and time of a tornado that is not possible to obtain with the 406 m grid-spacing in horizontal.
