The present work studies the separated flow in a square channel with ribs on one wall by using the PIV method. In this study, the spacing between ribs is kept constant and the heights of rib are varied in order to investigate the influence of the pitch-to-height ratio, P/e on the flow structures. Depending on the various pitch ratios, the enclosure between ribs can be regarded as closed or open ca

In their professional practice, designers serve different roles as experts in user behaviour, taste experts and conveyors of symbolic meaning. Combining these roles, however, is not necessarily unproblematic, especially so in contexts that are incongruent with the personal preferences of the designer. In seeking to understand this challenge in designers’ professional practice, it is relevant to hi

In a laboratory study the impact of the surrounding light on alertness was study. Two types oflight sources were examined, LEDs and T5 fluorescent tubes. The illuminance level in theworking area was kept constant (500 lx), while the surrounding light was varied between 100och 350 cd/m2. Subjective ratings of the emotional status and the experience of the lightingenvironment as well as physiologica

Redgörelse för diskussionerna om att eventuellt föreslå en kvinna till lektor i engelska vid Lunds universitet 1890, baserad på originalhandlingar i Lunds universitetsarkiv.

I denna text utgår jag från termen Industrial Cool för att diskutera hur tidigare industriella miljöer får ny dragningskraft. Termen betecknar hur traditionell tillverkningsindustri estetiseras och kulturaliseras på nya sätt. Detta är en följd av att stora delar av industrin i Västvärlden läggs ner eller flyttas till låglöneländer. I takt med att dessa sektorer av industrin blir något som allt fle

In 1949, Swedish actress Ingrid Bergman caused a well known scandal in Hollywood by leaving her Swedish husband Petter Lindström and their daughter for Italian film director Roberto Rossellini. The effects of this scandal in America have been thoroughly described in works like Bergman’s autobiography (Bergman, 1980), Donald Spoto’s recent biography on Bergman (Spoto, 1997) and in specialized schol

In this study, topological structures of a separation bubble in a ribbed channel are identified and analyzed. Particle image velocimetry (PIV) and POD (proper orthogonal decomposition) filter are used to give the velocity vector field. The ribs obstruct the channel by 20% of its height and are arranged 9 rib heights apart. The Reynolds number is 22000 based on the bulk-mean velocity and channel he

Atmospheric aerosol particles affect our living environment in many ways. Their effects are influenced by the interaction between the aerosol particles and the ubiquitous water vapour. The number-size distribution is a primary important parameter for aerosol particles and can be measured using the differential mobility particle sizer (DMPS). Programs have been developed to invert DMPS measurement