Direct numerical simulation of multiphase flows with unstable interfaces

Published under licence in Journal of Physics: Conference Series by IOP Publishing Ltd. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.This paper presents a numerical model that intends to simulate efficiently the surface instability that arise in multiphase flows, typically liquid-gas, both for laminar or turbulent regimes. The model is developed on the in-house computing platform TermoFluids , and operates the finite-volume, direct numerical simulation (DNS) of multiphase flows by means of a conservative level-set method for the interface-capturing. The mesh size is optimized by means of an adaptive mesh refinement (AMR) strategy, that allows the dynamic re-concentration of the mesh in the vicinity of the interfaces between fluids, in order to correctly represent the diverse structures (as ligaments and droplets) that may rise from unstable phenomena. In addition, special attention is given to the discretization of the various terms of the momentum equations, to ensure stability of the flow and correct representation of turbulent vortices. As shown, the method is capable of truthfully simulate the interface phenomena as the Kelvin-Helmholtz instability and the Plateau-Rayleigh instability, both in the case of 2-D and 3-D configurations. Therefore it is suitable for the simulation of complex phenomena such as simulation of air-blast atomization, with several important application in the field of automotive and aerospace engines. A prove is given by our preliminary study of the 3-D coaxial liquid-gas jet.Peer ReviewedPostprint (published version

Methodological Note Concerning the Symposium "Why a Theatre Laboratory?"

Eugenio Barba Why a Theatre Laboratory? It  includes the programme of a three days’ international symposium from October 4th through 6th 2004. This is the first initiative taken by the Centre for Theatre Laboratory Studies (CTLS), a newly inaugurated centre under Aarhus University in cooperation with Nordisk Teaterlaboratorium. Peripeti include articles on Stanislavski, Meyerhold, Copeau, Decroux, Grotowski, Peter Brook, Théâtre du Soleil, and Odin Teatret and the theatre laboratory praxis of these masters and inventors, including, of course, reflections on their function and effect. In the last article, Eugenio Barba reflects on the creative process of Odin Teatret over the last 40 years. In addition, we also include the curriculum vitae on those participating in the symposium. The occasion of the symposium is to celebrate the 40th anniversary in October 2004 of Nordisk Teaterlaboratorium/Odin Teatret. Congratulations

O quarto fantasma

Desde meus primeiros passos na profissão teatral, o treinamento tem sido um ponto de orientação constante sobre o qual muitas vezes tenho falado e escrito. Cruzei o campo minado das ilusões, mas não me posso dizer desiludido. A presença constante do treinamento é para mim um contínuo mutar sempre ao meu lado, já que não surgiu de uma doutrina, mas de minhas dúvidas e das questões que estas suscitaram. Traduzido do inglês por Deise Farias Nunes, artista cênica e estudante de teatrologia na Universidade de Oslo

Elogio do incêndio

Elogio do incêndi

Evig genkomst

Odin Teatrets instruktør Eugenio Barba reflekterer over den kreative og dramaturgisk proces i teatret.&nbsp

O Quarto Fantasma

Desde meus primeiros passos na profissão teatral, o treinamento tem sido um ponto de orientação constante sobre o qual muitas vezes tenho falado e escrito. Cruzei o campo minado das ilusões, mas não me posso dizer desiludido. A presença constante do treinamento é para mim um contínuo mutar sempre ao meu lado, já que não surgiu de uma doutrina, mas de minhas dúvidas e das questões que estas suscitaram

Den dybtgående orden, der kaldes turbulens: Dramaturgiens tre ansigter

In this essay on the three faces of dramaturgy, Eugenio Barba reflects on his theatrical works

Den dybtgående orden, der kaldes turbulens: Dramaturgiens tre ansigter

Artiklen af Eugenio Barba, leder af Odin Teatret vedrører teatrets kunstneriske arbejde med serendipitet.&nbsp