Philippe Ricoux
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View article: Optimization of Slurry Loop Reactors by Understanding the Complex Mesoscale Structure of Liquid–Solid Flow
Optimization of Slurry Loop Reactors by Understanding the Complex Mesoscale Structure of Liquid–Solid Flow Open
Slurry loop reactors have been extensively used in chemical industry, for example, ethylene copolymerization. A classical engineering problem is the timely removal of reaction heat which would otherwise cause particle swelling and aggregat…
View article: A greedy algorithm to extract sparsity degree for l1/l0-equivalence in a deterministic context
A greedy algorithm to extract sparsity degree for l1/l0-equivalence in a deterministic context Open
This paper investigates the problem of designing a deterministic system matrix, that is measurement matrix, for sparse recovery. An efficient greedy algorithm is proposed in order to extract the class of sparse signal/image which cannot be…
View article: Recycling Krylov Subspaces and Truncating Deflation Subspaces for Solving Sequence of Linear Systems
Recycling Krylov Subspaces and Truncating Deflation Subspaces for Solving Sequence of Linear Systems Open
This article presents deflation strategies related to recycling Krylov subspace methods for solving one or a sequence of linear systems of equations. Besides well-known strategies of deflation, Ritz-, and harmonic Ritz-based deflation, we …
View article: Simulations of intermittent two-phase flows in pipes using smoothed\n particle hydrodynamics
Simulations of intermittent two-phase flows in pipes using smoothed\n particle hydrodynamics Open
Slug flows are a typical intermittent two-phase flow pattern that can occur\nin submarine pipelines connecting the wells to the production facility and that\nis known to cause undesired consequences. In this context, computational fluid\nd…
View article: Sparse hierarchical interaction learning with epigraphical projection
Sparse hierarchical interaction learning with epigraphical projection Open
This work focuses on learning optimization problems with quadratical interactions between variables, which go beyond the additive models of traditional linear learning. We investigate more specifically two different methods encountered in …
View article: Enlarged GMRES for reducing communication
Enlarged GMRES for reducing communication Open
We propose a variant of the GMRES method for solving linear systems of equations with one or multiple right-hand sides.Our method is based on the idea of the enlarged Krylov subspace to reduce communication.It can be interpreted as a block…