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When simulating homogenous charge compression ignition or HCCI using one-dimensional models it is important to have the right combustion parameters. When operating in HCCI the heat release parameters will have a high influence on the simulation result due to the rapid combustion rate, especially if the engine is turbocharged. In this paper an extensive testing data base is used for showing the com

In both the academic literature and in the media there have been concerns expressed about the level of surveillance technologies used to facilitate security and its effect upon privacy. Government policies in the USA and the UK are continuing to increase surveillance technologies to counteract perceived terrorist threats. Reflecting upon Ashby’s Law of Requisite Variety, the authors conclude that

Espace libre är ett konstnärligt forskningsarbete, ett samarbete mellan konstkritikern, författaren och konsthistorikern Måns Holst-Ekström och konstnären Per Wizén. I text och bild undersöks libertinagets (av franskans libertinage) villkor, rum och relationer. Texten finns även i engelsk översättning, s. 183-185.

Att hantera och använda sig av modellerings- och simuleringsverktyg är inte enbart något som en majoritet av våra studenter får stor nytta av i sitt framtida yrkesliv. Det är också användbara pedagogiska verktyg för att nå insikt i hur olika system fungerar, hur vi subjektivt uppfattar att systemen fungerar och även att kommunicera denna uppfattning. I vår undervisning inom Lund University Master’

An experimental study is carried out to investigate the combustion process in a Wartsila 34SG spark-ignited lean burn four-stroke large bore engine (bore 340 mm) by means of optical diagnostics when operating on natural gas. The main focus of this work is to gain knowledge about in-cylinder combustion phenomena when igniting a lean air/fuel mixture with pre-combustion chamber induced jets. Especia

In modern manufacturing the production safety is often the key factor to achieve good product quality. Factors that influence the production safety are many, durability of machining centres, electric power supply and also the tool life. The tool life is governed by the ability to resist wear and failure. The long term wear is usually easy to predict contrary to premature failure. Premature failure

The complexation of macroions or charged micelles and oppositely charged polyelectrolytes was studied by the use of Monte-Carlo simulations and mean field calculations. The Monte-Carlo simulations were performed on a simple model system with the emphasis on the electrostatic interaction, (i) polyelectrolyte rigidity, (ii) polyelectrolyte linear charge density, (iii) surfactant tail length, and (iv