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Spring School 2024

7th Spring School

Lattice Boltzmann Methods
with OpenLB Software Lab

4. – 8. March 2024

Heidelberg, Germany

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Executive committee

  • Kerstin Dick, Karlsruhe Institute of Technology, Germany
  • Shota Ito, Karlsruhe Institute of Technology, Germany
  • Mathias J. Krause, Karlsruhe Institute of Technology, Germany
  • Stephan Simonis, Karlsruhe Institute of Technology, Germany

Host organization
KIT Campus Transfer GmbH

This year’s spring school venue is the historic building of the Heidelberger Akademie für Wissenschaften in the city of Heidelberg, right underneath the famous castle.

The field of Lattice Boltzmann Method

Lattice Boltzmann Methods (LBM) are an established numerical technique for Computational Fluid Dynamics (CFD) and beyond. The simulation of complex multi-physics benefits strongly from the mesoscopic modelling of LBM and positions it next to traditional numerical methods. The rapid development in LBM – also driven by the emergence of massive parallel computing infrastructure – enables engineers to solve relevant problems for academia as well as for industry.

Target audience

The expected attendees are developers and researchers, from industry and academia interested to learn theoretical and practical aspects of LBM. The spring school addresses e.g. engineers, computer scientists, mathematicians and physicists as well as Master and PhD students. The course level is either beginners (Option B) or advanced (Option A). Based on the interest in CFD, this course provides a collaborative platform for LBM, both for developers and researchers.

Objective of the spring school

The spring school introduces researchers and users from industry to the theory of LBM and trains them on practical problems. Option B: the first half of the week is dedicated to theoretical fundamentals up to ongoing research on selected topics in kinetic theory, scientific computing, LBM, and Partial Differential Equations (PDE). Followed by mentored training on case studies using OpenLB in the second half of the week. Emphasis is placed on the modelling and simulation of particulate, multi-component, and turbulent fluid flows. Option A: Advanced OpenLB users and developers are enabled to solve their own application problems and implement their own solution approaches.

This educational concept is probably unique in the LBM community and offers a comprehensive and personal guided approach to LBM. Participants also benefit from the knowledge exchange during the poster session, coffee breaks and an excursion.

Software lab and requirements

In the software lab sessions, the participants are trained on practical applications, deploying the open source software OpenLB. Option B (Wednesday to Friday): Special focus is placed on case studies, which are important to understand and verify the theory presented in the lectures (Monday and Tuesday). By the help of experienced tutors, beginners are enabled to set up simulations for relevant problems. Option A (Monday to Wednesday): Experienced applicants and developers are supervised by tutors (Monday to Wednesday) to solve their own application problems and/or implement their own LBM. They work independently (Thursday and Friday), though discussions with the tutors are always welcome.

To guarantee personal tutoring and intensive exchange between experienced mentors and novices, the lab is limited to 50 participants. The attendees are responsible to bring their own laptop equipped with:

  • Recent C++ compiler with full C++17 support (minimum versions: GNU GCC 9, Clang 7 or Intel C++ 19.0)
  • OpenMPI 2.1 and higher
  • ParaView

Windows users should prepare their laptop in advance to enable the Windows Subsystem for Linux (WSL) following the Technical Report 5 (

Speakers (preliminary)

  • Davide Dapelo, University of Liverpool, United Kingdom
  • Francois Dubois, CNAM Paris, Universite Paris-Sud, France
  • Timm Krüger, The University of Edinburgh, United Kingdom
  • Halim Kusumaatmaja, Durham University, United Kingdom
  • Timothy Reis, University of Greenwich, United Kingdom

  • Tim N. Bingert, Karlsruhe Institute of Technology, Germany
  • Fedor Bukreev, Karlsruhe Institute of Technology, Germany
  • Martin Frank, Karlsruhe Institut of Technology, Germany
  • Shota Ito,  Karlsruhe Institute of Technology, Germany
  • Mathias J. Krause, Karlsruhe Institute of Technology, Germany
  • Adrian Kummerländer, Karlsruhe Institute of Technology, Germany
  • Jan E. Marquardt, Karlsruhe Institute of Technology, Germany
  • Stephan Simonis, Karlsruhe Institute of Technology, Germany
  • Dennis Teutscher, Karlsruhe Institute of Technology, Germany

Course delivery

Lecture notes (theory lecture part: pdf, software lab part: printed), theory lectures by invited speakers, software lab mentored by OpenLB developers, 5x lunch, 2x dinner (including Spring School dinner), social excursion, all coffee breaks, certificate of participation

Open workshop

The spring school is organized as open workshop in two parallel session: Option Advanced and Option Beginners. It promotes the participants and is open for the interested general public. The spring school is organized as a non-profit event.

Registration fee inculdes

Lecture notes (theory lecture part: pdf, software lab part: printed), lectures by invited speakers, software tutorial mentored by OpenLB developers, daily lunches, 2x dinner (including Spring School dinner), social excursion, daily two coffee breaks, certificate of participation. Several scholarships are available for students (MA or PhD candidates).


 Early registration

(by 4th February 2024)

Regular registration
Academia420 €570 €
Industry1,770 €1,920 €

Poster session award

The award is aiming at supporting excellent students working in the field of LBM.


Option Beginners (B)

LBM Theory

09:00Opening, LBM for Application
Mathias J. Krause, Stephan Simonis
9:00: LBM for linear elastic solids
Oliver Boolakee
9:30: Progress in the Development of Lattice Boltzmann Methods for Solids
Henning Müller
10:00Coffee breakCoffee break
10:30Short Introduction by Participants
Organizers, Speakers and Participants
Turbulence Models for LBM
Stephan Simonis
11:30Introduction to LBM
Timm Krüger
LBM for Advection Diffusion (Reaction) Problems
Fedor Bukreev, Davide Dapelo
12:30Lunch breakLunch break
14:00Boundary conditions
Timothy Reis
Multi-Phase and Multi-Component Flows
Halim Kusumaatmaja
15:00(Non-)Dimensionalisation in LBM
Timm Krüger
Particulate Flows
Jan E. Marquardt
16:00Coffee breakCoffee break
16:30Construction and Analysis of LBM
Francois Dubois

Efficient Parallel Implementation
Adrian Kummerländer

17:30Poster session and dinnerFree, optional:
Introduction to linux terminal (15 min),
help desk in order to get OpenLB running on your laptop

OpenLB Software Tutorial

09:001 Introduction
Basic concepts, Functors, Performance, Validation
3.2 Prepare geometry
Functors, Meshing, Material Numbers
Exercise 2: Prepare geometry
Advanced models I
Online Documentation, Doxygen
10:00Coffee breakCoffee breakCoffee break
10:302 Preliminaries
Introduction to Linux Terminal, OpenLB Setup, Paraview & VTK
3.3 Prepare Lattice
Descriptor and Dynamics, Fields
Advanced models II
Exercises 5: Particle Laden Flows I 
Exercises 6: Particle Laden Flows II
Exercises 7: Free Energy Model
11:303.1 Initialisation
XML Interface, Unit Conversion,
Exercise 1: Initialisation
3.4 Main Loop with Timer
Time Measurement, Convergence Check
Closing (12:00)
12:30Lunch breakLunch breakLunch break
14:00Social event / excursion3.5 Initial and Boundary Conditions
Boundary Objects, Dynamics, Types
Exercise 3: Boundary Conditions
Applying and developing OpenLB
15:00Social event / excursion3.6 Collide & Stream
LBM Algorithms, Execution Coupling, Collision, Streaming
Option 1:
OpenLB for Applicants: Work on Your Own Application
16:00Social event / excursionCoffee breakOption 2:
OpenLB for Developers: Implement Your Own LB Model
16:30Social event / excursion3.7 Computation & Results
Console Output, Functor Application
Exercise 4: Get Results
19:00Spring school dinner

Option Advanced (A)

Monday to Wednesday: Experienced applicants and developers are supervised by tutors to solve their own application problems and/or implement their own LBM. Thursday and Friday: They work independently, though discussions with the tutors are always welcome.

You will also participate in the Short Introduction by Participants on Monday at 10:30, social event, poster session, dinners and all coffee as well as lunch breaks with all other attendees.

Supported by

Heidelberger Akademie der


Karlsruhe Institute of Technology

Lattice Boltzmann Research Group
Process Machines
UKCOMES Final Logo.png

UK Consortium on Mesoscale
Engineering Sciences

KIT Campus Transfer GmbH

This project has received funding from the European Union’s Horizon Europe research and innovation programme under grant agreement No 101138305