Research Interests

My primary focus are the efficient implementation of Lattice Boltzmann Methods on heterogeneous High Performance Computers.

One of my main projects is OpenLB – An Open Source High Performance Lattice Boltzmann Code for Heterogeneous CPU-GPU Clusters financed by NHR∂KIT. I am also involved in FALCON and HiResHemo.

For some application visuals see Wind Park, Propeller Airplane and Vocal Folds.

Publications

• A. Kummerländer, S. Ito, M. Schecher, D. Dapelo, S. Simonis, M.J. Krause, and F. Bukreev. Efficient Wall-Modelled Large Eddy Simulation of Rotors using Homogenized Lattice Boltzmann Methods. In: International Journal of Numerical Methods for Heat & Fluid Flow. DOI: 10.1108/HFF-09-2025-0724
• A. Kummerländer, F. Bukreev, D. Teutscher, M. Dorn, and M.J. Krause. Optimization of Single Node Load Balancing for Lattice Boltzmann Method on Heterogeneous High Performance Computers. In: Journal of Parallel and Distributed Computing. DOI: 10.1016/j.jpdc.2025.105169
• A. Kummerländer, F. Bukreev, S. Berg, M. Dorn and M.J. Krause. Advances in Computational Process Engineering using Lattice Boltzmann Methods on High Performance Computers. In: High Performance Computing in Science and Engineering ’23.
• A. Kummerländer, M. Dorn, M. Frank, and M.J. Krause. Implicit Propagation of Directly Addressed Grids in Lattice Boltzmann Methods. In: Concurrency and Computation. DOI: 10.1002/cpe.7509. Presented at ParCFD 2021.
• F. Prinz, J. Pokorný, J. Elcner, F. Lizal, O. Mišik, M. Malý, M. Bělka, N. Hafen, A. Kummerländer, M.J. Krause, J. Jedelský, M. Jicha. Comprehensive experimental and numerical validation of Lattice Boltzmann fluid flow and particle simulations in a child respiratory tract. In: Computers in Biology and Medicine (2024). DOI: 10.1016/j.compbiomed.2024.107994.
• F. Bukreev, S. Simonis, A. Kummerländer, J. Jeßberger, and M.J. Krause. Consistent lattice Boltzmann methods for the volume averaged Navier–Stokes equations. In: Journal of Computational Physics. DOI: 10.1016/j.jcp.2023.112301.
• D. Dapelo, A. Kummerländer, M.J. Krause, and J. Bridgeman. Lattice-Boltzmann LES modelling of a full-scale, biogas-mixedanaerobic digester. In: Engineering with Computers. DOI: 10.1007/s00366-023-01854-3.
• A. Selmi, S. Bhapkar, C. Nagel, A. Kummerländer, and M.J. Krause. Simulation of Temperature Driven Microflows Using a Lattice Boltzmann Method in Slip and Moderate Transition Regimes. In: 24th International Conference on Thermal, Mechanical and Multi-Physics Simulation and Experiments in Microelectronics and Microsystems. DOI: 10.1109/EuroSimE56861.2023.10100812.
• M.J. Krause, A. Kummerländer, S.J. Avis, H. Kusumaatmaja, D. Dapelo, F. Klemens, M. Gaedtke, N. Hafen, A. Mink, R. Trunk, J.E. Marquardt, M.L. Maier, M. Haussmann, and S. Simonis. OpenLB–Open source lattice Boltzmann code. In: Computers & Mathematics with Applications (2020). DOI: 10.1016/j.camwa.2020.04.033.

Software Releases

• A. Kummerländer, S. Avis, H. Kusumaatmaja, F. Bukreev, M. Crocoll, D. Dapelo, N. Hafen, S. Ito, J. Jeßberger, J.E. Marquardt, J. Mödl, T. Pertzel, F. Prinz, F. Raichle, M. Schecher, S. Simonis, D. Teutscher, and M.J. Krause. OpenLB Release 1.6: Open Source Lattice Boltzmann Code. DOI: 10.5281/zenodo.7773497.
• A. Kummerländer, S. Avis, H. Kusumaatmaja, F. Bukreev, D. Dapelo, S. Großmann, N. Hafen, C. Holeksa, A. Husfeldt, J. Jeßberger, L. Kronberg, J. Marquardt, J. Mödl, J. Nguyen, T. Pertzel, S. Simonis, L. Springmann, N. Suntoyo, D. Teutscher, M. Zhong and M.J. Krause. OpenLB Release 1.5: Open Source Lattice Boltzmann Code. Version 1.5. Apr. 2022. DOI: 10.5281/zenodo.6469606.

Conferences / Talks

• Towards Automatic Code Generation of Adjoint Lattice Boltzmann Methods for Fluid-Structure Interaction. EASN, 15th Conference of the European Aerospace Science Network, Madrid, Spain, October 2025.
• Towards High-Fidelity Digital Twins of Offshore Wind Turbines Utilizing State-of-the-Art Heterogeneous Supercomputers. University of Liverpool, EU Horizon Project SeaDream, Liverpool, UK, October 2025.
• Efficient Wall-Modeled Fluid-Structure Interaction Simulations. University of Edinburgh, Seminar talk during a visit to the groups of Prof. Timm Krüger and Prof. Kusumaatmaja, Edinburgh, UK, September 2025.
• Introduction to OpenLB (Invited Talk). CFDMLSE2025 Workshop on CFD & ML for Sustainable Engineering, UFRGS, Porto Alegre, Brazil, June 2025.
• Efficient Wall-Modelled Large Eddy Simulation with Fluid-Structure Interaction using Hybrid Homogenized Regularized Recursive Lattice-Boltzmann Methods. CFC, 23rd IACM Computational Fluids Conference, Santiago de Chile, March 2025.
• OpenLB : On the Sofware Architecture of an Efficient and Flexible Lattice Boltzmann Method Framework. deRSE25, Karlsruhe, Germany. February 2025.
• Homogenized Lattice Boltzmann Methods for Efficient Fluid-Structure Interaction Simulations. WCCM, Vancouver, Canada. July 2024.
• Optimization of Heterogeneous Load Balancing - Cooperative utilization of SIMD CPUs and GPUs for Lattice Boltzmann Methods in OpenLB. ISC High Performance, Hamburg, Germany. May 2024.
• Load Balancing of Lattice Boltzmann Methods for Heterogeneous High Performance Computers. Discrete Simulation of Fluid Dynamics DSFD, Albuquerque, NM, USA. July 2023.
• Research Software Engineering in OpenLB: Refactoring a Legacy Code to State-Of-The-Art Performance. deRSE23, Paderborn, Germany. February 2023. DOI: 10.5281/zenodo.7662082
• Lattice Boltzmann Performance Engineering in OpenLB. HiRSE Seminar Series. Online, December 2022. DOI: 10.5281/zenodo.7389379
• Implicit Propagation of Directly Addressed Grids in Lattice Boltzmann Methods. 32nd ParCFD, Nice, France. May 2021

Theses (offered topics)

These topics are suggestions for an initial discussion. The actual topic can be adapted to fit the profile and interests of the student.
Also feel free to contact me with own thesis ideas at the intersection of LBM and HPC.

Curriculum Vitae