0000000000454473

AUTHOR

Abdessamad Barbara

showing 3 related works from this author

Divided Wall Column Modeling and Simulation in an Open-Source Environment

2020

The divided wall column (DWC) can achieve sharp separations of three or more components in a single shell, substituting conventional sequences of two or more binary distillation columns, with lower expenses. Despite these advantages, DWC models are not available in commercial chemical process simulators. To simulate DWC, users must employ instances of conventional column model and couple them in different configurations. In this paper, a DWC model was developed in EMSO (Environment for Modeling, Simulation and Optimization). DWC model was then used for simulating the separation of an equimolar mixture of three hydrocarbons. Results show that, depending on the number of trays, DWC presented …

distillation[SDV.BIO]Life Sciences [q-bio]/BiotechnologyMaterials science020209 energydesignheat-pump02 engineering and technologyemsoBiochemistryColumn (database)Modeling and simulation[SPI]Engineering Sciences [physics]EMSO environment020401 chemical engineering0202 electrical engineering electronic engineering information engineering[CHIM]Chemical Scienceslcsh:Chemical engineering0204 chemical engineeringProcess Chemistry and Technologylcsh:TP155-156modelingdivided wall columnGeneral ChemistryMechanicssimulation[SDV.MP]Life Sciences [q-bio]/Microbiology and ParasitologyOpen sourcesystemsoptimizationEMSO environment; divided wall column; modeling; distillation; simulationChemical and Biochemical Engineering Quarterly
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An affine scaling method using a class of differential barrier functions: primal approach

2020

International audience; In this paper we propose a family of affine scaling interior point algorithms, called galpv4, using a primal approach, based on a large class of differential barrier functions. We show that these algorithms are in fact an extension and generalization of the classical affine scaling algorithm based on the well-known log barrier function. After carrying out a complete convergence analysis, we select some of these algorithms for comparison with the classical affine scaling algorithm, performed with the help of the familiar Netlib test set.

Large classconcave gaugeClass (set theory)Pure mathematics021103 operations researchControl and Optimizationinterior point methodsApplied Mathematicsdifferential barrier0211 other engineering and technologies02 engineering and technologyManagement Science and Operations Research01 natural sciencesprimal algorithm010101 applied mathematicsAffine scalinglinear programs[MATH]Mathematics [math]0101 mathematicsInterior point methodDifferential (mathematics)MathematicsOptimization
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Strict quasi-concavity and the differential barrier property of gauges in linear programming

2014

Concave gauge functions were introduced to give an analytical representation of cones. In particular, they give a simple and a practical representation of the positive orthant. There is a wide choice of concave gauge functions with interesting properties, representing the same cone. Besides the fact that a concave gauge cannot be identically zero on a cone(), it may be continuous, differentiable and even on its interior. The purpose of the present paper is to present another approach to penalizing the positivity constraints of a linear programme using an arbitrary strictly quasi-concave gauge representation. Throughout the paper, we generalize the concept of the central path and the analyti…

Control and OptimizationLinear programmingSimple (abstract algebra)Applied MathematicsMathematical analysisDifferentiable functionManagement Science and Operations ResearchDifferential (infinitesimal)Gauge (firearms)Representation (mathematics)Interior point methodOrthantMathematicsOptimization
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