Practical trainings, student assistants and theses
Offer | All | School practical training | Master theses | Research Assistant | Holiday job | Student practical training | Volunteer internship | Diploma theses | Bachelor theses | Student Assistant | |
---|---|
Institute/ Dep. | FKVF | FWDF | FWDF-A | FWDF-P | FWDF-V | FWGP-G | FWGT-B | FWIO-N | FWIO-T | FWIZ | FWOG | FWPC | FWU | |
Formatting | Table | |
Development and experimental investigation of a multi-channel flow body sensor (Id 421)
Bachelor theses / Master theses / Diploma theses / Compulsory internship
The development of a multi-channel flow body sensor according to patent WO 2010/069307 A1 aims to quantify the gas content in flow-carrying components. A decisive advantage of this sensor lies in its optical measuring principle, which is based on fiber-optic coupling and the analysis of the light output signal. This avoids electrical potentials in the measuring area, offering significant advantages over electrical measuring methods (intrinsic safety), especially for explosive mixtures.
Preliminary tests at the Institute for Experimental Fluid Dynamics at the Helmholtz Center Dresden-Rossendorf on gas-liquid flows showed that a clear binarization of the sensor output signal can be achieved due to the capillary effects in narrow channels and the different refractive indices of the gas and liquid phases. Building on previous work with a single-channel sensor prototype based on a polymer optical fiber (POF) with a diameter of 1 mm, the following tasks must be completed as part of further research.
Tasks:
- Adjusting the POF diameter to 1.5 mm in the single-channel configuration.
- Conducting experimental investigations of the new single-channel prototype using the already developed test system and evaluation programs.
- Designing a multi-channel sensor body for gas content measurements in the system.
- Developing a transition adapter to optimize the flow distribution between the DN10 flow pipe and the sensor body.
Department: Fluid process engineering
Contact: Condriuc, Ivan, Dr. Kipping, Ragna
Requirements
- Students majoring in fields such as process engineering, mechanical engineering, or chemical engineering.
- Interest in fluid mechanics and the development of measurement technology.
- Experience with 3D CAD tools.
- Basic knowledge of Python programming
Conditions
Immediate start possible
Duration according to the respective study regulations
Online application
Please apply online: english / german
Numerical investigation of particle mixing (Id 419)
Master theses / Diploma theses / Compulsory internship
Fine-grained solid particles from various industrial sources, which would otherwise be discarded, should ideally be processed to valuable products or inert residues. They contain valuable residuals, such as metals, that can be returned to the industrial cycle instead of being landfilled. This is one aim of the Helmholtz project FINEST in which this work is embedded.
The different finest powders need to be mixed and agglomerated for further processing. Our work in the project deals with the granular mixing. One aim is to describe particle flow based on the rheology of the bulk good while describing the mixing process among the particles using a transport equation.
The mixing process among particles is described by the transport equation. It needs to be coupled with the flow field of the particle bulk. The latter can be modelled by CFD, using e.g. FEM. Here, a rheologic model is required.
We are looking for someone with experience in CFD or other modelling to continue the implementation of this model.
Department: Particle dynamics
Contact: Baecke, Anna Magdalena, Dr. Lecrivain, Gregory
Requirements
- Student of e.g. Process Engineering, Chemical Engineering, Computational Engineering, Mechanical Engineering, …
- General interest in fluid mechanics and simulations
- Preliminary experience in CFD, ideally OpenFOAM
- Preliminary experience in code development (C++) optional
Conditions
- Start after September 2024
- Duration of internship or thesis according to study regulations
- Remuneration available, scholarship holders (e.g. ERASMUS+) welcome
Online application
Please apply online: english / german
Mutation and Enrichment Studies in the Context of Directed Evolution using Multiple Phage Display Experiments (Id 417)
Master theses / Diploma theses / Compulsory internship
The application of phage surface display (PSD) technology has accelerated developments in the field of biomolecular sensors and materials science. A practical complement to this technology is Next-Generation Sequencing (NGS). In this combination, a more comprehensive view of biopanning rounds with a deep insight into the entire sequence space is made possible. It is possible to identify sequencing artefacts, determine sequence number and structure, recognize binding motifs and observe the evolution of the phage library over the course of an experiment. PSD in combination with biopanning is able to select candidates with high affinity and selectivity to the desired substrates from large peptide libraries. In practice, this specific enrichment of peptides leads to a reduction in library diversity. It should therefore be possible to better visualize this reduction in sequence space using data clustering methods in order to better understand distances between similar sequence families.
Department: BioKollekt
Contact: Bloß, Christoph
Requirements
Prerequisite is a valid enrollment in a Master's program in bioinformatics, biotechnology, molecular biology, biochemistry, biology or a related natural science program. Furthermore:
- Interest in data cluster methods and bioinformatics
- Basic knowledge in bioinformatics, statistics, stochastics and clustering
- Experience with a programming language (e.g. Python, R, C, C++ or other)
- Ability to work independently and in a team
Interested students are invited to submit their application documents including CV, last academic transcript and letter of motivation.
Conditions
The topic is to be worked on as part of a Master's thesis in conjunction with a mandatory internship. This results in a duration of 12 months. The duration can be extended or adjusted in consultation with the supervisor. We can offer you:
- An innovative multidisciplinary research environment related to relevant issues in resource technology
- Supervision by experienced scientists and researchers
- Practical experience in the field of bioinformatics and directed evolution
Online application
Please apply online: english / german
Student internship, research assistant, school practical training, master/diploma thesis, compulsory internship (Id 407)
School practical training / Student practical training / Bachelor theses / Master theses / Diploma theses / Student Assistant / Holiday job / Compulsory internship / Volunteer internship / Research Assistant
At Helmholtz-Zentrum Dresden-Rossendorf (HZDR), over 1,500 employees from more than 70 nations are conducting cutting-edge research in the fields of ENERGY, HEALTH, and MATERIALS to address the major challenges facing society today.
The Center for Advanced Systems Understanding (CASUS), founded in Görlitz in 2019, is a German-Polish interdisciplinary research center focusing on data-intensive digital systems.
CASUS offers student internships in a wide range of scientific fields. You are welcome to apply and join CASUS if you are interested in gaining knowledge in the following research areas:
- Theoretical Chemistry
- Earth System Science
- Systems Biology
- Digital Health
- Computational Radiation Physics
- Theory of complex systems
- Dynamics of Complex Living Systems
- Machine Learning for Infection and Disease
Institute: CASUS
Contact: Dr. Mir Hosseini, Seyed Hossein, Mazur, Weronika, Dr. Calabrese, Justin, Dr. Martinez Garcia, Ricardo, Dr. Bussmann, Michael, Dr. Cangi, Attila, PD Dr. Kuc, Agnieszka Beata, Dr. Yakimovich, Artur, Dr. Knüpfer, Andreas
Requirements
- Student in computer science, physics, chemistry, or related fields
- Student already enrolled at the university in Germany, Poland or Czech Republic (close exchange and attendance in the office preferable and combined with the moblie working from Germany combinable)
- Eager to learn new skills
- Strong motivation to work in a collaborative environment
- Preliminary experience in code development is an advantage
- Excellent communication skills in English and/or German or Polish
Conditions
- A vibrant research community in an open, diverse and international work environment
- Scientific excellence and extensive professional networking opportunities
- A wide range of qualification opportunities
- We support a good work-life balance with the possibility of part-time employment, mobile working and flexible working hours
- Either an immediate start or a start in 2024 is possible
Online application
Please apply online: english / german
Investigation of the flow following behavior of lagrangian sensor particles in aerated reactors (Id 398)
Master theses / Diploma theses / Compulsory internship
Data acquisition in large industrial vessels such as bio reactor, biogas fermenters or wastewater treatment plants is limited to local measurement points due to the limited access to the vessel and the non-transparent fluid. To optimize these kinds of plants the three-dimensional flow field and the spatial distribution of e.g. temperature and electrical conductivity inside the vessel needs to be known. This can be done by the autonomous flow following lagrangian sensor particles (LSP) developed at the HZDR. Equipped with a pressure sensor, an accelerometer, two gyroscopes and a magnetometer, the sensor particle can track the flow movement inside of the vessels. From this, the flow field can be reconstructed.
To achieve a good flow following behavior, the density of the LSP can be adjusted before they are released into the vessel. While this works well for non-aerated systems, the influence of aeration on the flow following capability is unknown. Another unknown is how the velocities of the rising bubbles and of the continuous phase relates to the velocity measured by the LSP.
Therefore, the aim of this master thesis is to investigate the influence of aeration on the LSPs theoretically and experimentally by tracking the LSP with a camera. This includes the following tasks:
- Literature research on flow following behavior of large particles in fluids
- Experiments in a bubble column (330 mm ID) with LSPs and camera
- Data evaluation to retrieve the fluid velocity, bubble rising velocity and LSP velocity
- Comparison and conclusions on the flow following capability of LSPs in aerated reactors and comparison to the non-aerated case.
Department: Efficient wastewater treatment
Contact: Buntkiel, Lukas, Marchini, Sara
Requirements
- Studies in the area of chemical or mechanical engineering or similar
- Basic chemical and fluid engineering knowledge
- Data analysis in Python
- Independent and structured way of working
Conditions
- Immediate start possible
- Duration according to the respective study regulations
Links:
Online application
Please apply online: english / german
Internship on experimental investigation of aerosol propagation (Id 381)
Student practical training / Compulsory internship / Volunteer internship
Background:
Currently, there is a broad discussion whether ventilation by frequent window opening is sufficient for providing a sufficient amount of fresh air or if technical air purification devices based on e.g. HEPA filters are better solutions for public spaces. Furthermore, there is another discussion ongoing, whether a well-guided laminar flow or a high degree of mixing within a room is more beneficial. The latter, on the one hand distributes the potentially virus-laden aerosols in the whole room, but on the other hand reduces the peak concentrations of these aerosols clouds by magnitudes.
Objectives:
The objective is to perform aerosol propagation experiments and to estimate the potential aerosol inhalation of people in dynamic situations. To achieve this, an aerosol generator will be used in a demonstrator room under different flow conditions. The data from different scenarios will be processed in order to obtain a transference function that can relate the aerosol source with the aerosol receivers.
Tasks:
- Literature survey
- Aerosol experiments in different scenarios.
- Post-processing of the results.
Department: Experimental Thermal Fluid Dynamics
Requirements
- Student of natural sciences or engineering
- Willingness to conduct experimental work
Conditions
Duration:
4-6 months
Remuneration:
According to HDZR guidelines