Patrick Höhn

hoehn_patrick.jpg

E-mailpatrick.hoehn@uni-goettingen.de

Biography

Experience
- Research Associate University of Göttingen May 2023 - Present
- Visiting PhD Student NORCE Norwegian Research Centre Apr 2019 - May 2019
- Research Associate Clausthal University of Technology June 2017 - May 2023
- Project Engineer RWTH Aachen University May 2015 - May 2017
- Research Associate Luleå University of Technology 2011 - 2014
Education
- PhD Student Technische Universität Clausthal - Drilling Simulator Celle 2017 - 2024
- Luleå University of Technology - Master of Science (MSc), Space Engineering 2008 - 2010 Erasmus Mundus SpaceMaster programme
- Université Paul Sabatier Toulouse III - Master of Science (MSc), Physics and Astrophysics 2008 - 2010 Erasmus Mundus SpaceMaster programme
- Dipl. Ing. (FH), Mechanical Engineering 2003 - 2008
Honors and Awards
- Scholarship for Research Exchange at NORCE Norwegian Research Center - E.ON Stipendienfonds Dec 2018

Research Interests

  • Storage systems
  • CFD
  • OpenFOAM
  • Fluid-Structure-Interaction
  • Drilling Engineering

Projects

Teaching

Summer Term 2025

Autumn Term 2024

Summer Term 2024

Autumn Term 2023

Open Thesis Topics

Benchmarking of VAST protocol flavors for ML workloadsApply

A VAST Storage system will be installed as part of the new KISSKI data center. VAST storage systems offer different protocol flavours to access the storage backend, i.e. NFS, S3, SMB, and mixed. Since projects at the new data center should be executed in an efficient way, it is important to gain some insights in the potential performance of machine learning workloads. The proposed thesis will fill this gap and provide recommendations for future projects.

Patrick Höhn VAST StorageMachine Learning

Concepts for GPU computing for particle transport simulations using LIGGGHTSApply

LIGGGHTS is a common code used for the simulation of macroscopic particles. It is based on the well-known molecular dynamics code LAMMPS. The variant used within the thesis is the academic fork LIGGGHTS-PFM which is under current development. Since LAMMPS already has some modules for GPU processing, it is the goal of the thesis to modify LIGGGHTS-PFM to make use of these capabilities. In a first step the best strategy for implementing LIGGGHTS-PFM on GPUs should be evaluated. Based on this a concept and initial steps of the implementation are expected. However, it is not required that all features of LIGGGHTS-PFM are implemented within the scope of the thesis. It is expected that the enhancement will improve the run-time performance and pave the road to particle simulations on GPUs. General programming experience is required. Knowledge in GPUcomputing and particle transport is beneficial but not mandatory.

Patrick Höhn Particle SimulationGPU Computing

Implementation of a precice-Adapter for the particle transport simulator LIGGGHTSApply

Precice as already presented at the GöHPCoffee is a multiphysics framework which allows the combination of various simulation codes to perform coupled simulations. These can both include coupled thermal problems or topics related to fluid structure interaction. So far, there exists no possibility to perform a coupled particle simulation using preCICE since the only particle solver is not publicly available. It is the aim of this thesis to mitigate this limitation by implementing a precice-adapter for the particle solver LIGGGHTS-PFM. One possibility could be the modification of an existing OpenFOAM-adapter in preCICE. In addition, the thesis will compare the achievable performance with other coupling libraries using LIGGGHTS and its derivatives. General programming experience is required. Knowledge in simulation technology and particle transport especially in LIGGGHTS is beneficial but not mandatory.

Patrick Höhn Particle SimulationOpenFOAMprecice

Processing of experimental videos for object trackingApply

In flow loop experiments, I studied the damping of oscillations in a pipe subject to flow and particle transport. I recorded the movement with two GoPro Hero 9 cameras to have valuable absolute position data in addition to accelerations recorded by the Inertial Measurement Unit (IMUs) placed inside the inner pipe in the picture. However, due to the frame rate of 200 fps, the contrast is changing between frames due to the 50 Hz frequency of the electricity powering lamps in the laboratory. A manual processing of all videos is unfeasible due the large number of frames to be analyzed (approx. 100k). Therefore, an automation either by using image processing libraries, e.g. OpenCV, or an AI based approach on GPUs, e.g. with the Facebook library detectron2, is required to process this larger amount of video data. Preferable knowledge for the project are experience with AI/ML and/or image processing, since he successful applicant will evaluate using different approaches with the goal of segmenting the videos and providing both positions of the inner pipe and particle bed. Further information on the experiment can be found in https://doi.org/10.21268/20241022-0. Upon successful completion of the project, the application will have gain hands-on experience with a real-world problem in the area of AI processing of video data. The results are also planned to be submitted in a scientific publication, so it is your chance to get your first paper published.

Patrick Höhn Image processingExperimentsMachine Learning

Theses

  • Investigation of the influence of cuttings transport on drill string dynamics, Patrick Höhn (PhD Thesis), Advisors: Joachim Oppelt, 2024-08-09, Thesis BibTeX URL
  • Design, Construction and Validation of an articulated solar panel for CubeSats, Patrick Höhn (Master's Thesis), Advisors: Dr Johnny Ejemalm, 2010, BibTeX
  • Entwicklung und Bau eines ausklappbaren Sonnensegels für den Cube-Satelliten Uwe 2, Patrick Höhn (Diplomarbeit), Advisors: Prof. Dr.-Ing. Winfried Perseke, 2008, BibTeX

Publications

2023

  • Open Educational Resources für den Hochschulbereich: Anschauliche Vektoranalysis für die Studieneingangsphase (Larissa Hahn, Simon Blaue, Patrick Höhn, Nina Merkert, Pascal Klein), Didaktik der Physik Frühjahrstagung – Hannover 2023, Didaktik der Physik Frühjahrstagung – Hannover 2023, Didaktik der Physik Frühjahrstagung, 2023 BibTeX
  • Modelling of the dynamics of a drill string using measurements from a full scale testing facility (Patrick Höhn, Elvis Kuida, Rodrigue Freifer, Lisette Hayn, Christian Bohn), Celle Drilling 2023, Celle Drilling, Celle Drilling, 2023 BibTeX
  • FUTURE DIRECTIONS OF A SOLVER FOR COUPLED FLUID-STRUCTURE-INTERACTION AND PARTICLE SIMULATIONS (Patrick Höhn), The 18th OpenFOAM Workshop (OFW18) (18), OpenFOAM Workshop, 2023 BibTeX

2022

  • Framework for automated generation of real-time rate of penetration models (Patrick Höhn, Felix Odebrett, Khizar Shahid, Carlos Paz, Joachim Oppelt), In Journal of Petroleum Science and Engineering (213), pp. 110369, 2022 BibTeX
  • OPTIMIZING MODELS FOR PREDICTING TORQUE ON BIT USING DATA FROM THE VOLVE FIELD IN NORWAY (Patrick Höhn, Ahmed Bashara, Carlos Paz, Joachim Oppelt), ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering OMAE 2022 (41), ASME, ASME 2022, 2022 BibTeX
  • Application of solids4Foam to The Damping of Drill String Vibrations (Patrick Höhn, Roger Aragall, Joachim Oppelt), The 17th OpenFOAM Workshop (OFW17) (17), OpenFOAM Workshop, 2022 BibTeX
  • Tuning of a PID-Controller Based Kick Handling Solution in a Simulated Environment (Hozan Ibrahim, Patrick Höhn, Damiano Varagnolo, Joachim Oppelt), Celle Drilling 2022, Celle Drilling, Celle Drilling, 2022 BibTeX

2021

  • Building a heterougenous cluster using git, gitlab, docker and owncloud (Patrick Höhn, Joachim Oppelt), German OpenFOAM User meeting 2021, German OpenFOAM User meeting, German OpenFOAM User meeting, 2021 BibTeX
  • SIMULATION OF PARTICLE TRANSPORT IN VISCOPLASTIC FLUIDS (Patrick Höhn, Roger Aragall, Joachim Oppelt), The 16th OpenFOAM Workshop (OFW16) (16), OpenFOAM Workshop, OFW16, 2021 BibTeX

2020

  • Improved Solver for coupled fluid-structure interaction and particle simulations (Patrick Höhn, Roger Aragall, Joachim Oppelt), 15th OpenFOAM Workshop (15), OpenFOAM Workshop, OpenFOAM Workshop, 2020 BibTeX
  • CASE STUDY ROP MODELING USING RANDOM FOREST REGRESSION ANDGRADIENT BOOSTING IN THE HANOVER REGION IN GERMANY (Patrick Höhn, Felix Odebrett, Carlos Paz, Joachim Oppelt), 39th International Conference on Ocean, Offshore and Arctic Engineering (39), International Conference on Ocean, Offshore and Arctic Engineering, International Conference on Ocean, Offshore and Arctic Engineering, 2020 BibTeX

2019

  • Realistic Scenario Drilling Simulation for Deep and Critical Wells (Patrick Höhn, Rodrigue Freifer, Joachim Oppelt), Offshore Mediterranean Conference and Exhibition, Offshore Mediterranean Conference, Offshore Mediterranean Conference, 2019 BibTeX
  • Automated Dynamic Kick Detection and Management during Drilling Operation: A Case Study and Simulation Analysis (Patrick Höhn, Niklas Hornig, Opeyemi Bello, Joachim Oppelt), Celle Drilling 2019, Celle Drilling, Celle Drilling, 2019 BibTeX
  • Analysis of lateral drill string vibrations using fluid-structure interaction and particle simulations (Patrick Höhn, Roger Aragall, Joachim Oppelt), 14th OpenFOAM Workshop (14), OpenFOAM Workshop, OpenFOAM Workshop, 2019 BibTeX

2018

  • Modeling, Simulation and Validation of the fluid temperature of a physical drilling simulator for experimental planning (Patrick Höhn, Roger Aragall, Michael Koppe, Joachim Oppelt), 37th International Conference on Ocean, Offshore and Arctic Engineering (37), International Conference on Ocean, Offshore and Arctic Engineering, International Conference on Ocean, Offshore and Arctic Engineering, 2018 BibTeX

2016

  • Simulation of a cooling fluid conditioning system for combustion engines using Simscape (Patrick Höhn, Jan Widdershoven, Peter Stommel), 2016 BibTeX
  • Dynamic model and simulation for a high consistency refining process (Patrick Höhn), In Nordic Pulp and Paper Research Journal (31), pp. 88–101, 2016 BibTeX

2015

  • Design and validation of an articulated solar panel for CubeSats (Patrick Höhn), 2015 BibTeX
  • Design and Validation of an Articulated Solar Panel for Cubesat, 29th Annual AIAA (Patrick Höhn), USU Conference on Small Satellite, Utah State University, Logan, Utah, USA, USU Conference on Small Satellite, USU Conference on Small Satellite, 2015 BibTeX

2014

  • Energy optimization of a high consistency refiner process (Patrick Höhn, Wolfgang Birk), 2014 IEEE Conference on Control Applications (CCA), IEEE, IEEE CCA, 2014 BibTeX

2013

  • Sensitivity analysis of models for high consistency refining process (Patrick Höhn, Wolfgang Birk), 2013 IEEE International Conference on Control Applications (CCA), IEEE International Conference on Control Applications, IEEE CCA, 2013 BibTeX

2012

  • System identification approach to the modeling of an LC disc refiner process chain (Patrick Höhn, Wolfgang Birk), Reglermöte 2012: 13/06/2012-14/06/2012, Reglermöte, Reglermöte, 2012 BibTeX

All publications as BibTex