Here, we report on large-eddy simulation (LES) of supersonic flow, mixing, self-ignition, and combustion in a model scramjet combustor. The combustor has been experimentally investigated at DLR, German Aerospace Center Lampoldshausen and consists of a one-sided divergent channel with a wedge-shaped flame-holder: at the base of which, hydrogen is injected. This combustor has been extensively studie

Reviderad och uppdaterad historik över rektorsämbetet vid Lunds universitet med avseende på bland annat mandattid, rekrytering, roll och arbetsuppgifter, skifteshögtider och ceremoniella insignier. Som bilaga komplett längd över universitetets rektorer 1668-2021. Tidigare version publicerad 2015.

A translated poem is always a new original. If its rewriting of the thought-content, imagery, emotions and formal structure of its model differs considerably from what a literal translation might yield—as may be the case when the translator happens to be a poet with a marked aesthetic or thematic agenda—it may even be called an appropriation. It is my contention that this phenomenon is particularl

Purpose: In the present study, we respond to recent calls to investigate work related circumstances of school psychologists. As very limited research is done on work engagement among school psychologists, we further tested for the effect of well-established work related factors on work engagement.Methods: A subsample of data from a survey distributed to all members of the Swedish Psychological Ass

A reliable method of optimization of polymer gears remains, to date, an open challenge, due to the lack of specific material characterization of polymers and to the complex nonlinear relations between different geometric and operating parameters. For spur and helical gears, the authors herein have developed the optimization algorithm, which primarily enables variation of geometry according to vari

Knowledge management has strategic importance for any manufacturing enterprise. Systematically gathered, analyzed, and interpreted professional experiences can prevent technical problems, unnecessary costs, and unnecessary engineering changes. The model for recording of knowledge and its integration into the engineering change and adaptive design processes is the main contribution of this publicat

A nuclear spectroscopy experiment was conducted to study α-decay chains stemming from isotopes of flerovium (element Z=114). An upgraded TASISpec decay station was placed behind the gas-filled separator TASCA at the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt, Germany. The fusion-evaporation reactions 48Ca+242Pu and 48Ca+244Pu provided a total of 32 flerovium-candidate decay chains,

Integrated product development is a set of complex activities and its level of difficulty is additionally increased by the ever-changing business environment, primarily by functional associating of geographically dispersed human resources. The key resources for development are product developers, but it is questionable whether the existing systems are appropriate for the education of such professi

ntegrated product development is a set of complex activities and its level of difficulty is additionally increased by the ever-changing business environment, primarily by functional associating of geographically dispersed human resources. The key resources for development are product developers, but it is questionable whether the existing systems are appropriate for the education of such professio

Time has come for engineered systems to behave smartly. Towards this end, they need (i) to collect data directly from real life processes, (ii) to build situation awareness, (iii) to reason about their operational states, (iv) to determine the best servicing objectives, (v) to plan their run-time adaptation, and (vi) to provide dependable operations/services even under dynamically changing circums

An open challenge is the reliable dimensioning of polymer gears due to the lack of accurate data on the fatigue strength of polymer materials, and the complex relations between geometric and operating parameters. The national standards (BS 6168:1987, JIS B 1759:2013) and the guidelines of the German engineering association VDI 2736 are available for the calculation of polymer gears. In most cases,

This paper present the solutions that a company introduced to tackle the problems that it faced during the engineering design and manufacturing of plastic injection molds. The company took an approach of introducing knowledge management system for risk reduction and avoiding problems that had already been recognized in the past. Based on preliminary analysis, knowledge management system model has

Conventional technical system is designed with all details in the product development phase. Conditions of operation and modes of behaviour are known and validated before the product is launched to the market. This deterministic way of thinking is built into regulations procedures and it is requested at validation when safety is an issue. The existing way of validation that is based on predictive

Knowledge management (KM) in the engineering change management process is crucial for any manufacturing enterprise. Increasing complexity triggers an increasing demand for systematic management of information and knowledge. KM is of strategic importance to a successful management of an enterprise, especially when the key staff changes. Systematically gathered, analyzed and interpreted professional