Jobangebot
Student Computational /
Praktikum Abschlussarbeit - Stellenanzeige | Deutsches Zentrum für Luft- und Raumfahrt (DLR)
Arbeitgeber: Deutsches Zentrum für Luft- und Raumfahrt (DLR)
Jobdatum: 24. April 2024
Einstiegsart: Praktikum, Abschlussarbeit
Einsatzort:
Köln; Nordrhein-Westfalen
Stellenbeschreibung - Student Computational / Mechanical Engineering, Mathematics, Physics or similar (f/m/x)
connecticum Job 1745102
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Master thesis Enter the fascinating world of the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt; DLR) and help shape the future through research and innovation! We offer an exciting and inspiring working environment driven by the expertise and curiosity of our 11,000 employees from 100 nations and our unique infrastructure. Together, we develop sustainable technologies and thus contribute to finding solutions to global challenges. Would you like to join us in addressing this major future challenge? Then this is your place! The DLR Institute of Future Fuels (DLR-FF) is researching technologies that ensure the efficient production of chemical energy sources and synthetic fuels from renewable raw materials, including closing the CO2 cycle. On the path to climate neutrality, the researchers support the market entry of the technologies through investigations along the entire value chain. The team of “Carbon Management and Commodities” of the DLR-FF division of Solar Chemical Process Development in Cologne-Porz is looking for a Student Computational / Mechanical Engineering, Mathematics, Physics or similar (f/m/x) Numerical simulation of a solar rotary kiln What to expect: Demand for cement has almost tripled in the last 25 years and CO2 emissions from cement production now account for 8% of global industrial emissions. A key part of the process is the calcination of limestone into lime and CO2. This endothermic reaction requires high temperatures in excess of 900°C in the reaction chamber, which are generated in conventional calciners by burning fossil fuels. To reduce emissions, the DLR project aims to replace fossil fuel combustion with solar energy. Therefore, a solar rotary kiln will be developed for the calcination process.
As experiments are costly and time consuming to set up and certain parameters are difficult to measure, it is crucial to have a model to better understand the heat transfer mechanism and the chemical reaction process inside the calciner.
As a radiative model of the crucible already exists, the focus of your thesis will be to numerically analyse the heat transfer mechanism by convection and conduction. This will include natural convection inside and outside the crucible, forced convection induced by the rotation of the calciner and conduction into the holding structure of the calciner. You will begin with a literature review of the existing and most commonly used models of convection and conduction in solar rotary kilns. You will then construct a simplified 3-dimensional model of the reactor to classify the influence of convection on the heating behaviour of the reactor system.
You will also analyse the conductive losses by setting up a high-quality mesh to determine the losses by conduction into the calciner holding structure. Thus, one of your tasks will be a detailed mesh study to find a suitable compromise between computation time, stability and accuracy. Your results will be validated by experiments carried out in August/September on a solar rotary kiln reactor. Optionally: depending on time and your interest, a numerical study of multiphase flow in terms of heat transfer into the dense particle bed could also be carried out.
What we expect from you:
What we offer: DLR stands for diversity, appreciation and equality for all people. We promote independent work and the individual development of our employees both personally and professionally. To this end, we offer numerous training and development opportunities. Equal opportunities are of particular importance to us, which is why we want to increase the proportion of women in science and management in particular. Applicants with severe disabilities will be given preference if they are qualified. Further information: Starting date: 01.07.2024
Duration of contract: 6 to 9 months Type of employment: Part-time Remuneration: up to German TVöD 5
Vacancy-ID: 94066
Contact: Jana Barabas Institut für Future Fuels Email:jana.barabas@dlr.de |
Informationen zur Bewerbung
Stellenangebot:
Student Computational / Mechanical Engineering, Mathematics, Physics or similar (f/m/x)
Jobkennzeichen:
Connecticum Job 1745102
Bereiche:
Ingenieurwissenschaften:
Energietechnik, Maschinenbau
Naturwissenschaften: Mathematik, Physik
Naturwissenschaften: Mathematik, Physik
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