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LES of the interaction between a premixed flame and complex turbulent swirling flow

In this paper the Triple Annular Research Swirler, a fuel injector characterized by complex design with three concentric air passages, has been studied numerically. A swirl-stabilized lean premixed flame has been simulated by means of Large Eddy Simulation. The computations characterize successfully the dynamics of the flame and their interactions with the complex swirling flow. The flame is stabi

Les péri-récepteurs chimiosensoriels des insectes / Chemosensory perireceptors of insects

Small globular proteins, highly abundant in the antennal sensillar lymph and in the mammalian nasal mucus, and capable of binding odorant molecules have been discovered. They have led to the concept that odorant-binding proteins (OBPs) and chemosensory proteins (CSPs) may optimize the reception of hydrophobic stimuli molecules by enhancing their solubilization in the aqueous environment that bath

LES modelling of spray combustion

Numerisk strömningsmekanik är en kraftfull metod för att förstå flödet och förbränningen som sker i flygplansmotorer och kommer att vara ett avgörande verktyg i övergången från konventionella fossila bränslen till hållbara alternativ. Eftersom mer forskning har skett kring konventionella bränslen bör en simuleringsmetod för alternativa bränslen föregås av en metod som verklighetstroget kan simulerComputational fluid dynamics is a powerful method for understanding the flow and combustion that occurs inside aircraft engines and will be a key tool in the transition from conventional fossil-based fuel to sustainable alternatives. Because conventional fuels have been more widely researched, an attempt at simulating the combustion of alternative fuels should be preceded by the development of a m

À la recherche d'un public parlant: les médias et la democratie.

The traditional notuion of democracy being anchored in discussions among citizens is highlighted. The chapter makes the claim that while civic talk is central to the life of democracy, there are many socio-cultural factors that impede poitical discussion. Also, while formal deliberation is important, even the free-flowing, messy and unpredictable converations of everyday life can give rise to the

Le réconfiguration de la culture civique

This chapter introduces the notion of civic culture as a frame for understanding political engagement and civic agency. In particular, the role of the media is underscored in shaping civic cultures; these include such dimensions as knowledge, values, practices and identities.