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The objective of this thesis is to numerically simulate a fluid jet injected into a crossflow of the same or another fluid, respectively. Such flows are encountered in many engineering applications in which cooling or mixing plays an important role, e.g. gas turbine combustors. The jet in crossflow (JICF) is used both for cooling and for injecting liquid fuel into the air stream prior to combustio

CURRENT DYNAMICS IN SOUTHEAST ASIA NEW PERSPECTIVES IN POLITICAL ECONOMY AND COMPARATIVE POLITICS SEMINAIRE EUROPÉEN / BIMESTRIEL Vendredi / 14h-18h Lieux : Inalco, Maison de la recherche, 2 rue de Lille, Paris 7e ; ou CERI, Paris 7e. COORDINATION Elsa Lafaye de Micheaux, CASE, Inalco; Astrid Norén-Nilsson, ACE, Lund; David Camroux, CERI, Sciences Po; Delphine Allès, CASE, Inalco. COMITÉ SCIENTIFI

https://www.ace.lu.se/sites/ace.lu.se/files/2024-08/Current%20Dynamics%20Programme%202024-2025%20V3.pdf - 2026-05-31

CURRENT DYNAMICS IN SOUTHEAST ASIA NEW PERSPECTIVES IN POLITICAL ECONOMY AND COMPARATIVE POLITICS SEMINAIRE EUROPÉEN / BIMESTRIEL Vendredi / 14h-18h Lieux Inalco, Maison de la recherche, 2 rue de Lille, Paris 7e ; ACE, Sölvegatan 18, Lund ou CERI, 28 rue des Saints Pères, Paris 7e. COORDINATION Elsa Lafaye de Micheaux, CASE, Inalco ; Astrid Norén-Nilsson, ACE, Lund; David Camroux, CERI, Sciences P

https://www.ace.lu.se/sites/ace.lu.se/files/2024-10/Current%20Dynamics%20in%20Southeast%20Asia_2024-2025.pdf - 2026-05-31

The flow field generated by the flow into a jet engine air-intake, with near ground effects, is considered. The axial inflow in the neighborhood of the ground generates a system of unsteady vortices. Some of these vortices extend from the air-intake towards the ground. Some of these vortices are strong enough to dislocate and even lift small objects from the ground up to the air-intake. The dynami

Wall-bounded turbulent flows are central to a wide range of engineering applications, where surface roughness can significantly influence both frictional drag and convective heat transfer. While the momentum effects of roughness have been significantly advanced in the literature, the thermal counter parts remain insufficiently understood. This study addresses the critical gap in understanding roug

Temperature stratification plays an important role in HCCI combustion. The onsets of auto-ignition and combustion duration are sensitive to the temperature field in the engine cylinder. Numerical simulations of HCCI engine combustion are affected by the use of wall boundary conditions, especially the temperature condition at the cylinder and piston walls. This paper reports on numerical studies an

Large eddy simulations are performed for a single- and multiphase jets in crossflow (JICF). The multiphase JICF are compared to the single-phase case for the same momentum and mass flow ratios but with droplets of different sizes. Multiphase JICF have stronger counter-rotating vortex pairs (CVPs) than a corresponding single-phase JICF. Moreover, their trajectories are higher and their induced wake

Klimatförändringarna påverkar vår värld och det behövs ett mer hållbart samhälle. Flygindustrin är i behov av förändring, men flygmotorer är mycket komplexa och tar tid att utveckla. Termoakustiska instabiliteter har kraften att förstöra en motor, men också att minska miljöpåverkan. Samtidigt möjliggör ökad beräkningskraft i moderna datorkluster att detaljerade simuleringar kan utföras för att stuClimate change is affecting our world and a more sustainable society is needed. The aviation industry is in need of change but aero-engines are very complex and take time to develop. Thermoacoustic instabilities have the power to destroy an engine, but also to reduce the environmental impact. At the same time, increasing computational power allows detailed simulations to be executed in order to st