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Entradas con etiqueta computational simulation .

Data article: Set-up and input dataset files of the Delft3d model for hydrodynamic modelling considering wind, waves, tides and currents

Manuscript title: Set-up and input dataset files of the Delft3d model for hydrodynamic modelling considering wind, waves, tides and currents through multidomain grids

Authors: Juan Gabriel Rueda-Bayona, Andrés F. Osorio,  Andrés Guzmán

Data in Brief. December 2019. Vol. 28, 104921. https://doi.org/10.1016/j.dib.2019.104921

Abstract: This article contains the set-up and input files of the implementation of Delft3D model to determine extreme hydrodynamic forces performed in Rueda-Bayona et al. [1]. The model was configured with a multidomain grid using double-way communication between the hydrodynamic and wave module. The multidomain grids solve faster than single and nested grids because require less grid points to calculate. Also, the double-way communication between the hydrodynamic and wave modules allows to consider the non-linear interactions of wind, waves, tides and currents. Because there are no modelling examples related to multidomain grids in the open access official web site of Delft3d model, this data contributes to increase the availability information of this necessity. Finally, the files of this article are ready to be run in the Delft3D model to perform a sensitivity test recommended in Rueda-Bayona et al. [1].

Keywords: Numerical modelling; Simulation; Hydrodynamic; Delft3D; Waves; Wind; Tides; Currents

Comportamiento viscoelastico del tejido corneal

Autores: Ramírez Rodríguez Fernando, Telléz Rendón José Fernando, Arciniegas Castilla Alejandro, Guzmán Guerrero Andrés F

Resumen

The biomechanical study of the corneal tissue has been primarily focused on the cornea computational simulation under different stress-strain conditions. However, there is still very little information regarding the mechanical properties and response of the corneal tissue, information required to perform adequate numerical simulations. Taking this issue into account, stress relaxation displacement controlled tests and creep stress controlled tests were performed in order to characterize the time–dependent, viscoelastic behavior of corneal tissue. Vertical strips were obtained from porcine corneas and were subjected to uniaxial tensile tests under different stress-strain levels. A time dependent, viscoelastic behavior was initially observed for high stress levels and an empirical constitutive model is proposed based on the experimental data. Creep and relaxation tests at low stress levels, within physiological conditions, were also performed. Results indicate that the corneal tissue viscoelastic behavior may be neglected for low stress levels which considerably simplifies the constitutive model to be implemented in computational simulations. Full text