Browsing NTNU Open by Author "Pedersen, Øyvind"
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3D Numerical Modelling of Hydropeaking Scenarios in Norwegian Regulated Rivers
Pedersen, Øyvind (Master thesis, 2012)AbstractThe objective of this master s thesis has been to investigate the capabilities of the CFD packages Star CCM+ and SSIIM to model hydro-peaking scenarios in regulated natural rivers in 3D using a RANS method. Two ... -
CFD modeling as part of a hybrid modeling case study for a gauging station with challenging hydraulics
Pedersen, Øyvind; Ruther, Nils (Journal article; Peer reviewed, 2019)Estimates of peak flood discharges are most often based on stage measurements, and the discharge is determined indirectly from the extrapolation of a rating-curve. It is possible to improve the extrapolation of the ... -
Hydraulic scale modelling of the rating curve for a gauging station with challenging geometry
Pedersen, Øyvind; Aberle, Jochen; Ruther, Nils (Peer reviewed; Journal article, 2019)Direct discharge measurements during flood events can be challenging from a technical as well as from a safety point of view. Therefore, flood discharges are often estimated by extrapolating a rating curve. Extrapolations ... -
Investigation on Different Shapes of Broad-crested Weirs by Means of CFD
Fulasa, Beyene Feye (Master thesis, 2019)Weirs are a type of hydraulic structure used for flow measurement, to regulate the water level in hydropower plants, and for the diversion of water to a reservoir. In this study, the flow over various shapes of broad-crested ... -
Modelling complex rating curves with hydraulic scale models and computational fluid dynamics
Pedersen, Øyvind (Doctoral theses at NTNU;2018:220, Doctoral thesis, 2018)The Flom-Q research project aims to revise the framework for flood-estimation methods in Norway. Accurate rating curves are important for estimating flood discharges that are crucial input for any flood assessment task. ...