Blar i Institutt for energi og prosessteknikk på tittel

Flow conditions in spiral casing and the influence of various bend geometries

Augustson, Tage Morken (Master thesis, 2013)

Both previous experiments and CFD simulations show that bends have a significant influence on the downstream flow field, especially by causing so-called ?skewed velocity profiles?. Based on the simulations carried out in ...

Flow field and performance of a vertical-axis wind turbine on model buildings

Jooss, Yannick; Bolis, Roberto; Bracchi, Tania; Hearst, R. Jason (Journal article, 2022)

The placement of a scaled-down Savonius (drag) vertical-axis wind turbine on model buildings is analysed experimentally by the use of turbine performance and flow field measurements in a wind tunnel. The set-up consists ...

Flow field optimisation and stack design for Anion Exchange Membrane Water Electrolysis

Eivind Ulstein Standal; Henning Levik Ørke (Bachelor thesis, 2020)

Anion Exchange Membrane VannElektrolyse (AEMVE) er en moderne teknologi med utspring fra PEM- og AWE vannelektrolyse. Anion Exchange Membrane (AEM) og et alkalisk miljø gjør at elektrolyseprosessen kan utføres med ...

Flow Field Patterns for Proton Exchange Membrane (PEM) Fuel Cells

Sauermoser, Marco; Kizilova, Nataliya; Pollet, Bruno; Kjelstrup, Signe (Journal article; Peer reviewed, 2020)

Flow field designs for the bipolar plates of the proton exchange membrane fuel cell are reviewed; including the serpentine, parallel, interdigitated, mesh type or their mixtures, furthermore 2D circular and 3D tubular ...

Flow in Pelton turbines

Furnes, Kjartan (Master thesis, 2013)

The flow in Pelton turbines is subsonic, turbulent, multiphase (water, air, and water vapor from cavitation), has high speeds, sharp gradients, free surface and dynamic boundary conditions. A static grid is unsuitable for ...

The flow in the induction and entrance regions of lab-scale wind farms

Vinnes, Magnus Kyrkjebø; Worth, Nicholas Alexander; Segalini, Antonio; Hearst, Robert Jason (Peer reviewed; Journal article, 2023)

With the increasing demand for wind energy, it is important to be able to understand and predict the available wind resources. To that end, the present wind tunnel study addresses the flow in the induction and entrance ...

Flow pattern transitions in and hysteresis effects of falling film flow over horizontal tubes related to LNG heat exchangers

Austegard, Anders; Bandopadhyay, Mayukh; Løvseth, Sigurd Weidemann; Brunsvold, Amy (Journal article; Peer reviewed, 2015)

Spiral wound heat exchangers with horizontal tube configurations are used extensively in the chemical, refrigeration, petroleum and food industry, and are core components in many natural gas liquefaction plants. For improved ...

Flow streaming mediated particle separation inside a droplet induced by surface acoustic waves

Jesus Tajes Vazquez (Master thesis, 2022)

I nyere tid har manipulering av nanopartikler på nanoskala blitt et tema av stor interesse blant det vitenskapelige miljøet. Fordelene ved å bruke SAW representerer et stort fremskritt innen felt som biomedisin eller ...

A fluid mechanic view on urban wind energy

Jooss, Yannick (Doctoral theses at NTNU;2022:283, Doctoral thesis, 2022)

The world energy demand is rising with an increasing need for renewable and sustainable energy sources. Wind energy plays a key role in this transition. Urban areas are largely unexploited for wind energy extraction. Urban ...

Fluid selection and thermodynamic optimization of organic Rankine cycles for waste heat recovery applications

Agromayor, Roberto; Nord, Lars O. (Journal article; Peer reviewed, 2017)

Organic Rankine cycles are effective to convert waste heat to power. One of the advantages and challenges of these cycles is that the most suitable working fluid and cycle configuration have to be selected for every ...

Fluid sensitive nanoscale switching with quantum levitation controlled by a-Sn/b-Sn phase transition

Boström, Anders Mathias; Dou, Maofeng; Malyi, Oleksandr; Parashar, Prachi; Parsons, Drew F.; Brevik, Iver Håkon; Persson, Clas (Journal article, 2018)

We analyze the Lifshitz pressure between silica and tin separated by a liquid mixture of bromobenzene and chlorobenzene. We show that the phase transition from semimetallic α−Sn to metallic β−Sn can switch Lifshitz forces ...

Fluid Structure Interaction in a Pipe

Bø, Anders Thorstad (Master thesis, 2018)

One of the recurring challenges concerning the development of fluid piping systems, is making them suitable for the task at hand. The system has to withstand all possible forces and motions associated with everyday use, ...

Fluid structure interaction in circular blade cascade

Jeyakaran, Roshan (Master thesis, 2022)

Når væske strømmer over en struktur, kan det utvikles uønskede virvler. I vannkraftindustrien er dette et stort problem som kan genereres i ledeskovler, der virvler går på tvers inn i løperen og forårsaker vibrasjoner. ...

Fluid structure interaction of Francis-99 turbine and experimental validation

Østby, Petter Thorvald Krogh; Agnalt, Einar; Haugen, Bjørn; Billdal, Jan Tore; Dahlhaug, Ole Gunnar (Journal article; Peer reviewed, 2019)

The ability to predict a francis runners dynamic response to the exciting forces is paramount to avoid unwanted disintegration of the turbines components. In this article, each of the principal factors contributing to the ...

Fluid-Structure Interaction and Immersed Boundary Method for the Compressible Navier–Stokes Equations Using High Order Methods

Khalili, Ehsan (Doctoral theses at NTNU;2018:30, Doctoral thesis, 2017)

There has been a growing interest in the study of biological flows in biomechanical systems in recent years. Such flows mostly appear in domains with complex geometries, flexible moving boundaries and usually involve ...