Johanna Matsfelt

Doctoral Student at Fluid Dynamics

In September 2015 Johanna began as a PhD student at the division of Fluid dynamics. In the project she is studying the flow field around an offshore wind turbine. Her main supervisor is Lars Davidson.

Wind turbines placed onshore and offshore placed on the sea bed has been around for some time. At water depths larger than 40 m, the economic advantages turn from putting the wind turbine on the sea bed to putting it on a floating platform. Depths like this represent a large part of the water areas around the world which could be used for offshore windpower. To be able to use these areas further research is needed to simulate the behavior of floating wind turbines.

Floating wind turbines at deep waters present an important and interesting modeling challenge as dynamic response depend on several factors including loads from wind, waves, currents, mooring, effects from elastic deformations and the control system. Thus, floating offshore wind turbines (FOWT) present an interesting interdisciplinary research challenge. There exist several codes aimed for simulation of FOWT:s but most use simplified approaches to the flow around the turbine blades (Blade Element Method), for the waves (linear wave theory) and for mooring. There is a need for more advanced tools using Computational Fluid Dynamics (CFD) for both wind and wave loads as well as non-linear methods for mooring.

The project is a collaboration between the department of Applied Mechanics and Shipping and Marine Technology at Chalmers. Johanna simulates the flow field around the wind turbine using Large Eddy Simulation (LES). The software used is OpenFOAM coupled to the aeroelastic solver FAST. This is done by SOWFA which is a set of solvers, turbine models and boundary conditions in OpenFOAM. This allows the user to simulate the wind turbine in an atmospheric boundary layer taking the forces from waves and mooring into account. Both the software SOWFA and FAST are made by NREL. In this project SOWFA will be further developed for floating wind turbines.

Image of Johanna Matsfelt

Showing 5 publications


Large eddy simulation: A study of clearings in forest and their effect on wind turbines

Johanna Matsfelt, Lars Davidson
Wind Energy. Vol. In Press
Journal article

Influence of complex terrain on a flow above a forest with clearing

Johanna Matsfelt, Lars Davidson, Kyle Brennan
Journal of Physics: Conference Series. Vol. 1618
Paper in proceeding

Download publication list

You can download this list to your computer.

Filter and download publication list

As logged in user (Chalmers employee) you find more export functions in MyResearch.

You may also import these directly to Zotero or Mendeley by using a browser plugin. These are found herer:

Zotero Connector
Mendeley Web Importer

The service SwePub offers export of contents from Research in other formats, such as Harvard and Oxford in .RIS, BibTex and RefWorks format.

Showing 1 research projects


Windpower in forest - the effects of clearings

Lars Davidson Fluid Dynamics
Johanna Matsfelt Fluid Dynamics
Swedish Wind Power Technology Center (SWPTC)

There might be more projects where Johanna Matsfelt participates, but you have to be logged in as a Chalmers employee to see them.