Modelling liquid hydrogen flows in cryogenic conditions for low-carbon aviation
il y a 1 semaine
Description Context This study takes place in the context of the decarbonization of aviation, notably with the deployment of hydrogen as a fuel. The fluid has to be used in liquid form under cryogenic conditions (LH2 around 20 K). This requires for an adaptation of storage and supply systems, including the fuel circuit that carries hydrogen from the tanks to the engine. In some cases, a vaporization phenomenon may develop within the axial pump (first element of the carburant pump), i.e. the liquid vaporizes under the effect of a local decrease in pressure, forming pockets of gas attached to the blades, leading to degraded pumping performance and strong vibrations. The design of these systems must therefore be capable of controlling the two-phase instabilities that can develop. Despite the efforts made in this field, numerical simulation of multiphase hydrogen flows in cryogenic conditions still presents major scientific challenges: i) in terms of modeling phase change coupled with heat transfer between phases, and ii) in terms of thermodynamic behavior (equations of state). Objectives The aim of the internship is to set up and test various models representing a compressible two-phase hydrogen flow involving non-isothermal liquid-vapor phase change. This requires adding source and/or sink terms to the various balances. A one-fluid formulation will be considered, with no-slip between liquid and gas phases. The study is centered in compressible two-phase solvers developed in Pprime. The work will consist in testing different closure relations (relaxation models, heat transfer models) and also to plug thermodynamic tables at equilibrium (CoolProp library). Validation will be firstly carried out on simple academic cases, then on a NASA 2D hydrofoil for which experimental data are available. Comparisons will be made with the commercial software StarCCM+. Profile Skills in fluid mechanics, thermodynamics and numerical simulation. Knowledges in two-phase flows will be appreciated. Starting date Dès que possible
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Poitiers, Nouvelle-Aquitaine, France Institut Pprime Temps pleinModelling liquid hydrogen flows in cryogenic conditions for low-carbon aviationRéf ABG-134745Stage master 2 / IngénieurDurée 5 moisSalaire net mensuel 620 euros10/12/2025Institut PprimeLieu de travailPoitiers Nouvelle Aquitaine FranceChamps scientifiquesSciences de l'ingénieurNumériqueMots clésLH2; cryogenic flows; vaporization;...
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Poitiers, France Institut Pprime Temps pleinDescription Context This study takes place in the context of the decarbonization of aviation, notably with the deployment of hydrogen as a fuel. The fluid has to be used in liquid form under cryogenic conditions (LH2 around 20 K). This requires for an adaptation of storage and supply systems, including the fuel circuit that carries hydrogen from the tanks to...
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Cryogenic Hydrogen Flow Modeling for Low-Carbon Aviation
il y a 1 semaine
Poitiers, France Institut Pprime Temps pleinA leading research institute in Nouvelle-Aquitaine is offering an internship focused on the decarbonization of aviation, specifically involving hydrogen as a fuel. The successful candidate will work on developing and testing models for compressible two-phase hydrogen flow, engaging with numerical simulations and collaborating on validation efforts. Essential...
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Poitiers, France Université de Poitiers - Institut PPRIME Temps plein**Ignition and spread of a "smouldering" front in porous media — Application to zombie fires issue —**: - Réf **ABG-129314** - Sujet de Thèse - 10/03/2025 - Autre financement public - Université de Poitiers - Institut PPRIME - Lieu de travail- Poitiers - Nouvelle Aquitaine - France - Intitulé du sujet- Ignition and spread of a "smouldering" front in...
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Poitiers, France Université Poitiers Temps pleinTopic description Résumé Contexte et motivation : L’évaluation de l’effort respiratoire est un enjeu majeur en médecine respiratoire, particulièrement chez les patients en détresse respiratoire aiguë. L’oxygénothérapie à haut débit nasal (High Flow Nasal Oxygen, HFNO) est une technique de plus en plus utilisée pour améliorer...
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French Support Facebook | Housing Provided in Portugal
il y a 3 jours
Poitiers, France FH Collective Academy Temps pleinStart Date: 2 February Location: Lisbon, Portugal (On-site) Imagine starting your day under the Portuguese sun, living in a fully furnished apartment provided by the company (all bills included), while building an international career in customer experience. With winter approaching across Europe, Portugal's mild climate offers an ideal setting for...
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Poitiers, France Babylangues Temps plein**Part-time Job for English Speakers in Poitiers (H/F)** Teach English and babysit in Paris ! Join Babylangues as an English Instructor and teach children in their own homes through a mix of language lessons and everyday activities. This role offers a unique opportunity to create a fun, interactive learning environment by using games, storytelling, and...
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Poitiers, France VitalAire Canada Inc. Temps pleinORKYN - REFERENT RESPIRATOIRE F/H - CDI - POITIERS (secteurs Thouars/Bressuire) page is loaded## ORKYN - REFERENT RESPIRATOIRE F/H - CDI - POITIERS (secteurs Thouars/Bressuire)locations: France, Poitierstime type: Full timeposted on: Posted Todayjob requisition id: R10078108**Descriptif de l'entité et de l'activité**Filiale du groupe Air Liquide,...
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ORKYN - REFERENT RESPIRATOIRE H/F - CDD - POITIERS
il y a 3 jours
Poitiers, France Air Liquide Temps pleinORKYN - REFERENT RESPIRATOIRE H/F - CDD - POITIERS page is loaded## ORKYN - REFERENT RESPIRATOIRE H/F - CDD - POITIERSlocations: France, Poitierstime type: Full timeposted on: Posted Todayjob requisition id: R10076501**Descriptif de l'entité et de l'activité**Filiale du groupe Air Liquide, Pharma Dom assure depuis plus de 40 ans la prise en charge,...
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6-months M2 Internship: Study of The Dynamics of
il y a 1 semaine
Poitiers, France Inserm Université de Poitiers Temps plein**6-months M2 Internship: Study of the dynamics of the emergence of antibiotic-resistant strains using flow cytometry**: - Réf **ABG-125768** - Stage master 2 / Ingénieur- Durée 6 mois- Salaire net mensuel 350 €- 16/09/2024- Inserm Université de Poitiers- Lieu de travail- Poitiers Nouvelle Aquitaine France- Champs scientifiques- Biologie - Santé,...
