Open positions:

We are currently looking for two highly motivated and capable PhD candidates interested in computational mechanics.

You will be working on developing numerical models for particulate agglomeration processes. The project focuses on two modern and industrially relevant applications: Selective Laser Sintering and Tableting.

If you are interested in cutting-edge research in a stimulating and dynamic international working environment, and have either very good programming skills or practical experience in agglomeration processes, please apply before February 28 (click here).

Research Interests:

I develop numerical methods capable of predicting the behaviour of complex multi-physics systems on different scales. I have extensive experience in modelling particulate materials, varying in size from nanometres (molecules) to micrometres (food/pharma powders), millimetres (sand) or meters (rock).

I am applying a multi-disciplinary approach to develop such solvers for a variety of systems: I have developed microscopic contact models for frictional, wetted and sintered particles as well as rheological laws for granular and atomistic flows. To solve these models, I have implemented a finite element solver and developed error estimators which I use for adaptive hp-mesh refinement.

I am cofounder and lead developer of MercuryDPM, an implementation of the Discrete Particle Method. Moreover, I have developed an accurate and efficient technique to analyse discrete systems and couple them with continuum models, MercuryCG. Both packages have unique features specifically developed to allow the simulation of real machinery, which has led to several industrial collaborations. For validation and calibration, I have developed close collaborations to several experimental facilities.

For more details and publications, see:


Beginning of 2017, I will start a new research line on modelling agglomeration processes (tabletting and sintering) of particulate materials. Agglomerates will be modelled using a mesoscale approach. Funding for this project has just been approved, and the available PhD positions will be posted here.

On 27th-31st March 2017, MercuryLab will offer once again its popular courses on C++ programming and Discrete Particle Simulations. More information can be found here.

The University of Twente will proudly host the 8th conference on Discrete Element Methods in August 2019. I am co-organising the event with Anthony Thornton, Stefan Luding, and Donna Fitzsimmons.

MercuryDPM 0.10 is now available here. New features: More complex wall shapes and Lees-Edwards boundaries; reorganisation of the source files; and a better build system (cmake). Have fun with it, and, as always, give us feedback!

Are you looking for an awesome way to spend your summer 2017? Are you interested in getting to know the University of Twente? Then come to the CuriousU summer school on 13th – 22nd August, 2017, where AR Thornton and I will organise an event on the physics of particles.

"Transport Phenomena" (Module 6), of which I am teaching "Numerical Methods", was recognized/ rewarded as the best TOM module in Chemical Engineering during the informal closure of the academic year 2015/16. Furthermore, the Keuzegids Universiteiten has appointed the Chemical Engineering bachelor’s programme a ‘Top rated programme’ in its 2017 edition. Time to celebrate!