Arttu Polojärvi's blog

Our ice mechanics group at Aalto University (Finland) is looking for a PhD-student to work on offshore wind in cold sea areas. We will use discrete element method to study how drifting sea ice affects an offshore wind farm and how the wind farm affects the sea ice surrounding it.

We are looking for a doctoral student to work multi-scale modeling of sea ice deformation on numerical modeling of ridging of sea ice by using discrete element method. Large-scale continuum models are typically used to study ice behavior with a resolution of some tens of kilometers. These models do not accurately describe small-scale processes related to deformation and failure of ice. In such models, the ice properties, such as compressive strength are tuned so that the models to present observed ice behavior. Predictive power of the models suffers from this.

Ice Mechanics Group at the Department of Mechanical Engineering of Aalto University is looking for two motivated doctoral students to work on numerical modeling and experiments on sea ice interacting with offshore wind farm. Novel numerical models for sea ice behavior and failure form a central part of the research by our group. Also we have a world unique experimental facility, Aalto Ice and Wave Tank.

We are looking for a doctoral student to work on numerical modeling of ridging of sea ice. Ridging is central to understanding the behavior of sea ice from scales varying from tens of meters up to hundreds of kilometers and has a close connection to sea ice dynamics models, which have an important role in predicting the effects of climate change. The applicant should be advanced in solid and computational mechanics and have at least average programming skills.

We in Aalto University School of Engineering are looking for a doctoral student to work on numerical modelling of fragmentation of quasi-brittle materials. In more detail, you will study breakage and fragmentation of ice blocks. These phenomena occur under compressive loads in ice block to ice block contacts. The fragmentation process is complicated, and requires novel numerical modelling techniques. Modelling may need to be done on different scales, which may have to reach from very high resolution modeling to simplified contact models on larger scale.

We are looking for a doctoral student to work on numerical modelling of fragmentation of quasi-brittle materials. In more detail, you will study breakage and fragmentation of ice blocks. These phenomena occur under compressive loads in ice block to ice block contacts. The fragmentation process is complicated, and requires novel numerical modelling techniques. Modelling may need to be done on different scales, which may have to reach from very high resolution modeling to simplified contact models on larger scale.

We are looking for a doctoral student to join our Arctic Marine and Ice Technology research group at the Aalto University (Finland), Department of Mechanical Engineering, to study ice-structure interaction process in shallow water using numerical simulations.  In the complex ice-structure interaction process an intact ice sheet fails into discrete ice blocks, which affect further stages of the process. Realistic calculations of ice loads due to this process require modeling of the ice blocks and their pile-up process.