Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/53597
Title: Wind field simulation using adaptive tetrahedral meshes
Authors: Montenegro, R. 
Montero, G. 
Escobar, J. M. 
Rodriguez, E. 
Gonzalez-Yuste, J. M.
Keywords: Local Refinement
Finite-Element
Derefinement Algorithm
Unstructured Grids
Condition Number, et al
Issue Date: 2005
Journal: Innovation in Civil and Structural Engineering Computing
Conference: 10th Int Conf on Civil, Structural and Environmental Engineering Computing (Civil-Comp 2005)/8th Int Conf on the Application of Artificial Intelligence to Civil, Structural and Environmental Engineering (AICivil-Comp 2005) 
Abstract: In the finite element simulation of environmental processes that occur in a three-dimensional domain defined over an irregular terrain, a mesh generator capable of adapting itself to the topographic characteristics and to the numerical solution is essential. The objective of this work is to present our recent results in these topics. An unstructured adaptive tetrahedral mesh of a region bounded on its lower part by the terrain and on its upper part by a horizontal plane is constructed. In this automatic mesh generator, a simultaneous untangling and smoothing procedure to optimise the resulting mesh has been introduced. Once the adapted mesh has been constructed in accordance with the geometrical characteristics of the domain, an adaptive local refinement is used in order to improve the numerical solution of a mass consistent wind field model. Air pollution models usually start from the computation of this velocity field. In this paper, a model for computing such a field based on the contribution of the observed wind flow and the vertical buoyancy or momentum plume rise defined by a Gaussian plume model is summarized. All these techniques are applied to real and test problems.
URI: http://hdl.handle.net/10553/53597
ISBN: 978-1-874672-24-1
Source: Innovation in Civil and Structural Engineering Computing, p. 159-185
Appears in Collections:Actas de congresos
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