Sökresultat

LES/FGM investigation of ignition and flame structure in a gasoline partially premixed combustion engine

Swirl stabilized premixed flame analysis using of LES and POD

For environmental and human health reasons, the regulations on the emissions from combustion devices are getting more and more strict. In particular, it is important to abate the emission of pollutants deriving from combustion in gas turbines. A solution is the use of swirl stabilized, lean premixed combustion. Besides the beneficial effects, there are still some issues related to instabilities an

The ban of “old man’s joy” in China. A transitions study of Beijing’s regulatory change banning the use of lǎo tóu lè (老头乐) vehicles from 1 January 2024

Framing the 'Other' Populist rhetoric before, during, and after the 2015 Refugee crisis - A comparative analysis of Jimmie Åkesson, Marine Le Pen, and Viktor Orbán

LES of Stable Combustion and Lean Blow-out in a Mach 2 Cavity Flameeholder

Challenging modeling strategies for LES of non-adiabatic turbulent stratified combustion

Five different low-Mach large eddy simulations are compared to the turbulent stratified flame experiments conducted at the Technical University of Darmstadt (TUD). The simulations were contributed by TUD, the Institute for Combustion Technology (ITV) at Aachen, Lund University (LUND), the EM2C laboratory at Ecole Centrale Paris, and the University of Duisburg-Essen (UDE). Combustion is modeled by

LES of the flow and acoustics generated by a wing installed aircraft propeller running in the vicinity of the ground

LES of Jets and Sprays Injected into Crossflow

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

A standard format for Les Houches Event Files

Numerical studies of flame extinction and re-ignition behaviors in a novel, ultra-lean, non-premixed model GT burner using LES-ESF method

Social movements, social science and politics : von Stein, Le Bon and two persistent problematiques

The growth of social science and sociology during modernity has always been characterized by a will to create predictability for human actions, under the modern conditions of liberty seen as contingent, unpredictable and unstable. To gain systematic knowledge became a way to solve, counteract or radicalize tensions in society, and thus outweighing the risks of contingency. Furthermore, this develo

Les Houches 2013: Physics at TeV Colliders: Standard Model Working Group Report

A Comparison of A Single and Multiphase Jets in a Crossflow Using LES

LES/PDF modeling of swirl-stabilized non-premixed methane/air flames with local extinction and re-ignition

Turbulent non-premixed flames with local extinction and re-ignition exhibit multiple combustion modes including ignition waves, diffusion flames, partially premixed flames, and ignition-assisted partially premixed flames. The mechanisms of local extinction and re-ignition are not well understood and numerical modeling of multi-mode combustion is a challenging task. In this work, a specially design

LES of spray in compressible flows on unstructured grids

Effect of burner geometry on swirl stabilized methane/air flames : A joint LES/OH-PLIF/PIV study

Dissecting Lewis score under the light of fecal calprotectin; an analysis of correlation of score components with calprotectin levels in capsule endoscopy.

Investigation on bluff-body and swirl stabilized flames near lean blowoff with PIV/PLIF measurements and LES modelling

Les Houches 2013: Physics at TeV Colliders: Standard Model Working Group Report

Germaine de Staël’s Réflexions sur le procès de la reine : An act of compassion?