Sökresultat

LES of the flow and acoustics generated by an aircraft fan running in the vicinity of the ground

A standard format for Les Houches Event Files

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

LES and DES of flow and ice accretion on wind turbine blades

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

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 Houches 2017: Physics at TeV Colliders Standard Model Working Group Report

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

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

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

An extended FGM model with transported PDF for LES of spray combustion

Study on the effect of seagrass meadows to mitigate coastal erosion: A case study of Le Morne, Mauritius

Mobilising for gender equality in (post)conflict Democratic Republic of Congo: The case of the Rien Sans Les Femmes Movement

Over the last few years, there has been a proliferation of different kinds of movements across the globe as citizens agitate for economic, socio-political and environmental change. In the Democratic Republic of Congo (DRC), where the country has been involved in a series of wars, attention has rather been eschewed towards the rape and sexual violence of women and girls. Using post-colonialism and

LES of the flow and particle ingestion into an air intake of a jet engine running on the ground

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

A comparison of a single- and multiphase jets in a crossflow using LES

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

Le , guo and zhe in Mandarin Chinese: a relevance-theoretic account

LES and DES of flow and ice accretion on wind turbine blades

Resistance and Agency in Peter S. Beagle’s The Last Unicorn and Ursula K. Le Guin’s “The Ones Who Walk Away from Omelas”