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. | All | FKVF | | FWDF-P | FWDF-V | FWFI | FWGP-G | FWGT | FWIO-N | FWIO-T | FWIZ | FWKK | FWKT | 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
Start date: 01.01.2025
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
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