Publications

• Article dans une revue

Thermal control of electronic components using a liquid around the phase change material

Haythem Shili, Kamel Fahem, Souad Harmand, Sadok Ben Jabrallah

As part of the research in the field of thermal control of electronic components, we confined a phase change material (plastic paraffin) in a liquid and we heated it on one vertical side by a hot plate. The presence of the liquid around the phase change material (PCM) prevents the direct contact…

Journal of Thermal Analysis and Calorimetry, 2020, 140 (3), pp.1177-1189. ⟨10.1007/s10973-019-08877-3⟩. ⟨hal-03442626⟩

• Article dans une revue

Evaporation of a sessile oil drop in the Wenzel-like regime

Dorra Khilifi, Walid Foudhil, Souad Harmand, Sadok Ben Jabrallah

In this work, we present an experimental study of the evaporation of oil drops deposited on both textured and smooth silicon substrates at two different temperatures (20 °C and 270 °C). We show that the sessile drops take a hexagonal form and are linked by an oil film (a droplet sitting on a…

International Journal of Thermal Sciences, 2020, 151, pp.106236. ⟨10.1016/j.ijthermalsci.2019.106236⟩. ⟨hal-03439613⟩

• Article dans une revue

A class of predefined-time controllers for uncertain second-order systems

Juan Diego Sanchez-Torres, Aldo-Jonathan Muñoz-Vázquez, Michael Defoort, Esteban Jiménez-Rodríguez, Alexander Loukianov

This paper proposes a novel formulation for robust predefined-time stabilisation of a class of second-order systems with matched perturbations. The presented approach allows designing a family of controllers that enforce a predefined-time sliding motion, even in the presence of unknown but bounded…

European Journal of Control, 2020, 53, pp.52-58. ⟨10.1016/j.ejcon.2019.10.003⟩. ⟨hal-03423316⟩

• Article dans une revue

Numerical study of flow around two spheres filled by a phase-change material

Fatma Ghrissi, Belgacem Dhifaoui, Souad Harmand, Sadok Ben Jabrallah

A numerical simulation using the commercial software “COMSOL Multiphysics” was carried out to study the flow around two fixed spheres filled with a phase-change material (PCM). This work focuses essentially on the process of fusion of the two interactive spheres located at different distances and…

Journal of Thermal Analysis and Calorimetry, 2020, 140 (3), pp.1191-1203. ⟨10.1007/s10973-019-09167-8⟩. ⟨hal-03440964⟩

• Article dans une revue

Stability, control and observation on non-uniform time domain

Mohamed Djemai, Michael Defoort, Anatoly Martynyuk

Nonlinear Analysis: Hybrid Systems, 2020, 36, pp.100889. ⟨10.1016/j.nahs.2020.100889⟩. ⟨hal-03690956⟩

• Article dans une revue

Numerical investigation of several twisted tubes with non-conventional tube cross sections on heat transfer and pressure drop

Bruce Indurain y Urricelqui, David Uystepruyst, François Beaubert, Sylvain Lalot, Asdis Helgadottir

Numerical simulations were performed with the open-source CFD software OpenFOAM to investigate the ability of several configurations of short length twisted tube geometries with non-circular cross-section connected to tubes with circular cross-section to induce a swirling flow. The heat transfer…

Journal of Thermal Analysis and Calorimetry, 2020, 140 (3), pp.1555-1568. ⟨10.1007/s10973-019-08965-4⟩. ⟨hal-03545598⟩

• Article dans une revue

Mechanistic insights on ultra-tough polylactide-based ionic nanocomposites

Jean-Emile Potaufeux, Jérémy Odent, Delphine Notta-Cuvier, Rémi Delille, Sophie Barrau, Emmanuel P. Giannelis, Franck Lauro, Jean-Marie Raquez

We report the synthesis and characterization of ultra-tough polylactide-based ionic nanocomposites via melt-blending of commercial polylactide (PLA), imidazolium-functionalized poly(ethylene glycol)-based polyurethane (im-PU) and surface-modified sulfonated silica nanoparticles (SiO2–SO3H) using…

Composites Science and Technology, 2020, Composites Science and Technology, pp.108075. ⟨10.1016/j.compscitech.2020.108075⟩. ⟨hal-02502424⟩

• Article dans une revue

The multi-visit team orienteering problem with precedence constraints

Said Hanafi, Renata Mansini, Roberto Zanotti

We study a new variant of the Team Orienteering Problem (TOP) where precedence constraints are introduced. Each customer has a set of tasks that have to be accomplished according to a predefined order by an heterogeneous fleet of vehicles. If a customer is selected, then all the tasks have to be…

European Journal of Operational Research, 2020, 282 (2), pp.515-529. ⟨10.1016/j.ejor.2019.09.045⟩. ⟨hal-03400340⟩

• Article dans une revue

Numerical and Experimental Study of Flow and Convective Heat Transfer on a Rotor of a Discoidal Machine With Eccentric Impinging Jet

Chadia Haidar, Rachid Boutarfa, Mohamed Sennoune, Souad Harmand

Abstract Discoidal rotor–stator systems are especially used in rotating machines and in numerous industrial applications. The design of high-power machine requires compliance with certain cooling-related stresses. Using an air jet impinging on a rotating disk is one way to increase the global heat…

Journal of Thermal Science and Engineering Applications, 2020, 12 (2), ⟨10.1115/1.4044207⟩. ⟨hal-03440037⟩

• Article dans une revue

How to Select 2D and 3D Roughness Parameters at Their Relevant Scales by the Analysis of Covariance

Stéphane Tchoundjeu Ngatchou, Maxence Bigerelle, Francois Robbe-Valloire, Tony da Silva Botelho, Frédéric Jarnias

In this paper, a multi-scale methodology is proposed to model and characterize the effect of two lubricants on changes in surface morphology during a running-in test. The test concerns two steels samples, mounted on a twin-disc tribometer to test each of lubricants A and B for a period of 42 h. The…

Materials, 2020, 13 (7), pp.1526. ⟨10.3390/ma13071526⟩. ⟨hal-03440999⟩