Research on multiphase flow through porous geological formations, including fractures, and simplified modeling of displacement processes.  In particular, applications of foam injection into geological formations. 

In 2020 I gave a lecture in the GeoScience and GeoEnergy Webinar series hosted by colleagues at TU Delft and Heriot-Watt U. One of the main themes is the surprises that come in doing research. The talk is available for viewing here.

In 2013 I wrote an article "Surface Physics Illustrated in the Operation of a Lava Lamp" for our Department student yearbook.

When one is appointed Professor at Delft University of Technology, one gives an introductory lecture (Intreerede) summarizing one's view one's field of research.  I choose to give some reflections on the tension between complexity and simplicity in our modeling of complex phenomena in nature. The text should be read along with the slides; the slides are referred to by number in the text. Click to view text. Click to view slides.

In 2010 I was invited to write a short essay for the SPE publication for young professionals, The Way Ahead. I chose as a topic, "Should I Consider Graduate School?" Click to view text.

Reflections on teaching:

• Link to film interview when I was a candidate for Best Teacher of TU Delft in 2011.  After the award I was interviewed for TU Delft highlights.
• Slides from a presentation I made in 2014 on my thoughts on University engineering education.
• I wrote an article for the 2021 yearbook of the Mjnbouwkundige Vereeniging on adaptations I've made to the BSc course in Physical Transport Phenomena to incorporate applications to geothermal research.
• for TU Delft highlights.