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pro vyhledávání: '"J. Ferchichi"'
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Publikováno v:
International Journal of Non-Linear Mechanics. 65:271-285
The current work deals with visco-plastic flows with thermal effects. The fluid motion is governed by the quasistatic Norton–Hoff operator coupled with the instationary heat equation involving the conduction term. The fluid׳s viscosity is modeled
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f47773b832e9a7194f7be25f3b578855
https://doi.org/10.1016/j.ijnonlinmec.2014.02.009
https://doi.org/10.1016/j.ijnonlinmec.2014.02.009
Publikováno v:
Afrika Matematika. 26:1-16
We deal with free boundaries evolution in visco-plastic flows. The fluid motion is governed by the incompressible Norton-Hoff operator in the non-cylindrical quasi-static case coupled with the time-dependent convection system. The novelty of this wor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::890acb18740daee44f5ae17a52942556
https://doi.org/10.1007/s13370-013-0173-3
https://doi.org/10.1007/s13370-013-0173-3
Publikováno v:
Applied Mathematics and Computation. 219:7056-7074
We consider a viscous incompressible fluid under the action of a finite number of particles located inside the flow domain. Each particle exerts a pointwise force on the fluid. The main objective is the detection of point-forces locations through min
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0ab7bf206bbe5a3e0f9495f73e28fd4
https://doi.org/10.1016/j.amc.2012.11.095
https://doi.org/10.1016/j.amc.2012.11.095
Autor:
J. P. Zolésio, J. Ferchichi
Publikováno v:
Nonlinear Differential Equations and Applications NoDEA. 20:1065-1078
The main novelty of this article is to reveal a weak formulation of rigid bodies motion arising from free boundaries evolution in visco-plastic flows governed by the incompressible Norton–Hoff operator with non-cylindrical coefficients. We supply t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b32b9dd6f9df1df4731b47352eb69eed
https://doi.org/10.1007/s00030-012-0197-7
https://doi.org/10.1007/s00030-012-0197-7
Autor:
J. Ferchichi, I. Gaied
Publikováno v:
ISRN Applied Mathematics. 2011:1-9
We deal with viscoplastic flows. The fluid motion is governed by the nonlinear incompressible Norton-Hoff operator with homogeneous boundary conditions. We provide the well-posedness of the model in the static case. The idea is based on the crucial p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::91087adcd20e7bb897f5d7d53a2bb33c
https://doi.org/10.5402/2011/627318
https://doi.org/10.5402/2011/627318
Autor:
J. Ferchichi, J.P. Zolésio
Publikováno v:
Journal of Mathematical Analysis and Applications. 334(1):97-113
We are interested in the study of quasistatic visco-plastic flows with thermal effects. The fluid motion is governed by the incompressible Norton–Hoff model coupled with the time-dependent heat equation where the dissipated mechanical power is the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0ef31976781dd3038d3086052a04377c
Publikováno v:
Nonlinear Analysis: Theory, Methods & Applications. 66:2618-2634
Optimal control of time dependent fluid flow governed by the incompressible Navier–Stokes equations is considered. A cost functional based on a local dynamical systems characterization of vortices is investigated. The resulting functional is a non-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3fb63a380e08c0c590115374ff54d3c4
https://doi.org/10.1016/j.na.2006.03.044
https://doi.org/10.1016/j.na.2006.03.044
Autor:
J. Ferchichi
Publikováno v:
International Journal of Non-Linear Mechanics. 42:450-458
We consider an optimal control problem of fluids flow. The fluid motion is governed by the incompressible time-dependent Navier–Stokes equations. A new optimal control formulation for the reduction and possibly extinction of vortices is proposed. A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c086311145f5eac7fadc6d9c4d2a345
https://doi.org/10.1016/j.ijnonlinmec.2007.01.016
https://doi.org/10.1016/j.ijnonlinmec.2007.01.016
Publikováno v:
Inverse Problems. 20:1083-1097
We investigate an optimization problem (OP) in a non-standard form: the cost functional measures the L1 distance between the solution u of the direct Robin problem and a function f L1(M). After proving positivity, monotonicity and control properties
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::735ae0494275651291c6618ec154e608
https://doi.org/10.1088/0266-5611/20/4/006
https://doi.org/10.1088/0266-5611/20/4/006