Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Sergio González Andrade"'
Publikováno v:
Applications in Engineering Science, Vol 19, Iss , Pp 100193- (2024)
This paper presents a comprehensive study on Herschel–Bulkley flow, where the flow parameters are dependent on the density. The Herschel–Bulkley model is a generalized power-law model used to simulate viscoplastic fluids defined by a plasticity t
Externí odkaz:
https://doaj.org/article/d170643cf59e4d0aa9ae1388fca36946
This paper aims to simulate viscoplastic flow in a shallow-water regime. We specifically use the Bingham model in which the material behaves as a solid if the stress is below a certain threshold, otherwise, it moves as a fluid. The main difficulty of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3570054aab962a07c83ce570835d1df
http://arxiv.org/abs/2301.11238
http://arxiv.org/abs/2301.11238
Publikováno v:
Computational Optimization and Applications. 80:979-1025
We consider the exact penalization of the incompressibility condition $$\text {div}(\mathbf {u})=0$$ for the velocity field of a bi-viscous fluid in terms of the $$L^1$$ –norm. This penalization procedure results in a nonsmooth optimization problem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d3522fcbbece518996df627d72513bf
https://doi.org/10.1007/s10589-021-00314-2
https://doi.org/10.1007/s10589-021-00314-2
Publikováno v:
Revista Politécnica. 47:7-16
En este artículo presentamos el modelo matemático de tipo compartimental con individuos asintomáticos utilizado por el Centro de Modelización Matemática (MODEMAT) para estudiar la propagación del SARS-CoV-2 en Ecuador, así como el esquema vari
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8583c7f9ba2be4565111d336752c5022
https://doi.org/10.33333/rp.vol47n1.01
https://doi.org/10.33333/rp.vol47n1.01
In this paper, we propose a dual-mixed formulation for stationary viscoplastic flows with yield, such as the Bingham or the Herschel-Bulkley flow. The approach is based on a Huber regularization of the viscosity term and a two-fold saddle point nonli
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d200dc8f71f48b5fb46ab638bf7a3a0
Autor:
Sergio González-Andrade
Publikováno v:
Lecture Notes in Computational Science and Engineering ISBN: 9783030558734
ENUMATH
ENUMATH
In this paper, we discuss the numerical solution of the non-isothermal steady-state Bingham flow considering that the viscosity and the yield limit variate with temperature. In the present contribution, we focus on the asymptotic limit case of high t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::695e1f752fb935f5568603586fb81129
https://doi.org/10.1007/978-3-030-55874-1_47
https://doi.org/10.1007/978-3-030-55874-1_47
Autor:
Sergio González-Andrade
Publikováno v:
Journal of Non-Newtonian Fluid Mechanics. 284:104380
This paper is devoted to the numerical solution of the non-isothermal instationary Bingham flow with temperature dependent parameters by semismooth Newton methods. We discuss the main theoretical aspects regarding this problem. Mainly, we discuss the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0598e1ac9cd1d72e21cb0c2d80f418f6
https://doi.org/10.1016/j.jnnfm.2020.104380
https://doi.org/10.1016/j.jnnfm.2020.104380
In this paper we propose a multigrid optimization algorithm (MG/OPT) for the numerical solution of a class of quasilinear variational inequalities of the second kind. This approach is enabled by the fact that the solution of the variational inequalit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0df8605e25e9cae9060a26874ac069a2
http://arxiv.org/abs/1703.03369
http://arxiv.org/abs/1703.03369
Autor:
Sergio González Andrade, Alfio Borzì
Publikováno v:
Advances in Computational Mathematics. 41:457-488
An accurate and fast solution scheme for parabolic bilinear optimization problems is presented. Parabolic models where the control plays the role of a reaction coefficient and the objective is to track a desired trajectory are formulated and investig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8557e952a2cdcae891976bad596170c6
https://doi.org/10.1007/s10444-014-9369-9
https://doi.org/10.1007/s10444-014-9369-9
Publikováno v:
Journal of Non-Newtonian Fluid Mechanics. 193:43-48
We study the numerical solution of thermally convective viscoplastic fluids with yield stress. Following [12] , a Bousinessq approximation of the convection effect is considered. The resulting coupled model is then regularized by means of a local reg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6295a842d6171eb3f041cee72462c82a
https://doi.org/10.1016/j.jnnfm.2012.06.001
https://doi.org/10.1016/j.jnnfm.2012.06.001