Practical trainings, student assistants and theses
| Offer | All | School practical training | | Research Assistant | Student practical training | Volunteer internship | Diploma theses | Bachelor theses | Student Assistant | Compulsory internship |
|---|---|
| Institute/ Dep. | All | FWDF | FWDF-P | | FWG | FWGB-A | FWGP | FWGR | FWGR-H | FWGT-B | FWIO-T | FWIZ-N | FWPC | FWU |
| Formatting | Table | |
Experimental investigation of particle resuspension in turbulent flow (Id 470)
Master theses / Diploma theses / Compulsory internship
The detachment of particles by a turbulent flow is a complex phenomenon with significant relevance in both environmental and industrial systems. This phenomenon is governed by a subtle balance between fluid and resisting forces. Until now, resuspension from a multilayer bed composed of particles with different densities remains poorly understood. The objective of this project is the investigation of particle detachment from a bed with two distinct solid particles.
This project is experimental. The student will use high-speed imaging techniques to capture the early-stage detachment and transport behavior of particles, analyzing the influence of bed configuration and turbulence intensity. The investigation includes a comparison between the experimental resuspension threshold of particles with predictions from the classical Shields diagram. In addition, there might be the opportunity to participate in experiments using the Ultrafast X-ray Computed Tomography system at HZDR, offering unique insight into the internal dynamics of the sediment beds and particle resuspension.
Department: Fluid Dynamics Resource Technology Processes
Contact: Höhn, Ronaldo Luis
Requirements
- Field of study in mechanical engineering, chemical engineering, fluid mechanics, physics, or a similar field of study
- Interest in experimental investigation
- Experience with Python or Matlab and Image post-processing
- Good written and oral communication skills in English
Conditions
The following tasks are mainly to be worked on:
- Experimental investigation of particle resuspension using high-speed imaging techniques
- Analysis of measurement data, including image processing and visualization
- Assistance in preparing and performing experiments in the Ultrafast X-ray laboratory at HZDR
- Determination of the resuspension rate of the low-density particles from the sediment bed
Conditions:
- The work will be performed at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR)
- Duration of the internship or thesis according to the study regulations: min. 5 months
- Start Date: August 2025
- Remuneration according to HZDR internal regulations
