Intermittent fluctuations in physical systems
HOST INSTITUTE: Department of Physics and Technology (IFT), NT-fak
GRANT: 12,0 MNOK
This project studies the sudden and large fluctuations that appear in various physical systems, with focus on four application areas:
Standard methods in physics often rely on investigating the consequences of small disturbances. When these methods are used to study phenomena with random and large events, the probability of damage over time, accidents and catastrophic events can be fatally underestimated. In this project, we use a statistical model which takes such large, sudden and random fluctuations into account, and allows for predicting the effect of large disturbances with much better accuracy.
Despite the large differences between these four systems, measurements from them share many statistical properties. With a common statistical modelling approach, this project will investigate important questions in all application areas:
In his doctoral thesis, Audun Theodorsen shows that the model is an effective tool for understanding the properties of near-wall turbulence in fusion energy reactors. The goal of this project is to develop the model as a universal tool in research of large fluctuations. The chosen application areas in sustainable energy, space- and atmosphere physics and climate research have high societal relevance.
Audun Theodorsen has a master’s degree and PhD in fusion plasma physics from UiT and is employed as a postdoctor at UiT since March 2019. During his PhD, he spent a year at the MIT Plasma Science and Fusion Center. This project is a collaboration between UiT – the Arctic University of Norway, MIT, National Oceanic and Atmospheric Administration, University of California San Diego, ETH Zurich, Sorbonne University, the Max Planck Institute for Plasma Physics, Colorado State University and the Culham Centre for Fusion Energy.