330 research outputs found
Over stroming in mens en machine
Intreerede uitgesproken op vrijdag 11 september 1992 aan de Technische Universiteit Eindhoven
Over instabiliteiten
Instabiliteiten vormen de schakel tussen laminaire en turbulente stromingen. Gedurende mijn loopbaan ben ik veelvuldig met stromingsinstabiliteiten in aanraking geweest en ik wil u daar graag over vertellen. Het college wordt in de context geplaatst van toepassingen in de energietechnologie. Uiteraard zal ik ook kort ingaan op mijn bijdragen aan onderwijs en organisatie
Analysis of experimental and numerical results of a turbulent swirling flow in a tube
In many applications swirling flow is used to enhance heat and mass transfer. One of the problems of modelling a turbulent swirling flow is the choice of the turbulent closure model which is acceptable for engineering purposes. To evaluate which model performs best, numerical results are compared with experimental data. Local velocity measurements are carried out on a swirling flow in a circular tube. The measurement method is hot-wire anemometry combined with visualization techniques. The numerical analysis is carried out using the k-e model and the Algebraic Stress Model. In the experiment a symmetrical swirl was observed, Comparing the experimental data with the numerical results shows that the Algebraic Stress Model represents the experimental data quite well, whereas the k-e model fails
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