Research Aims

I use and investigate large scale simulations in high-performance computing environments. In doing so, I look for generalized ways to make large scale simulations simpler, more relevant, more flexible and more efficient. I have a particular preference for multiscale or multi-model simulations, where effective combination of existing codes is the method of choice for addressing new science questions.

Research Topics

Modelling and simulation Multiscale computing High performance computing Code coupling

Research automation Grid computing Distributed computing

lattice-Boltzmann methods Agent-based modelling

N-body methods Molecular dynamics Parallel-in-time methods

Brain bloodflow Forced migration and refugee movements

Clay-polymer nanocomposites Star clusters Cosmological dark matter

Data Science Research software engineering practices

Multiscale modelling communities Automated data extraction


Hamid Arabnejad is a Post-doctoral Research Fellow, working on the VECMA project, which is led by Derek Groen. He holds a PHD in computer science from Faculty of Engineering of the University of Porto (FEUP). Prior to this, he was a post-doctoral researcher in Irish Centre for Cloud Computing and Commerce (IC4), and then a post-doc researcher in ANTAREX (AutoTuning and Adaptivity appRoach for Energy efficient eXascale HPC systems) project.

Diana Suleimenova is a PhD student in the Department of Computer Science, supervised by Derek Groen and David Bell. She investigates irregular migration models and develops simulation techniques that can be used to predict refugee movements. The use of computational skills can contribute to the better understanding, and prediction of migration movements, with the aim to eventually provide support in government and policy decisions.

Christian Vanhille is a student based in Paris who works with us remotely on a voluntary basis to create more accurate simulations of refugee movements, to help support UNHCR efforts. His main specialization is in physics.

Prospective PhD students

If you're interested in doing a PhD within my research group, you can contact me at Derek "dot" Groen "at"

MSc and BSc students

We currently have four students doing FYP projects within our group.

Current research projects

HiDALGO: HPC and Big Data Technologies for Global Challenges

HiDALGO is a Horizon 2020 Centre of Excellence which is active from December 2018 until December 2021. We will focus on establishing scalable global challenge applications on large supercomputers, and Brunel will in particular focus on creating advanced coupled simulations on forced migrant. For more information, please see

VECMA: Verified Exascale Computing for Multiscale Applications

VECMA runs from June 2018 until June 2021. We will focus on verification, validation and uncertainty quantification for multiscale computing applications. In particular, we will focus on making this possible using very large supercomputers. For more information, please see

PiTFlow: A Parallel-in-Time implementation for HemeLB

PiTFlow is an ARCHER e-CSE project which runs from August 2017 until August 2018. It is a collaboration with the University of Leeds (Daniel Ruprecht) and EPCC (Rupert Nash and David Scott). In this project we seek to implement a parallel in time implementation for HemeLB. We will use this implementation to explore the use of time parallelization under a range of different simulation conditions. More information is available at

UK Consortium on Mesoscale Engineering Sciences

Many of the blood flow and materials simulations I run these days have been made possible through the UK Consortium on Mesoscale Engineering Sciences (UKCOMES), in which I represent Brunel University London as an Associate Partner.

COST-Action on Open Multiscale Systems Medicine (OpenMultiMed)

OpenMultiMed runs from December 2015 until December 2019. I serve on the Management Committee on this COST-Action, and I am co-leader of the Work Package on Multiscale Computing. This project is a networking effort where we establish collaborative research projects on multiscale modelling, and will record and share the latest advances in the field.

Past Research Projects