About us
With about 20 scientific employees and students, the Institute for Reactive Flows of the University of Stuttgart conducts research on the fundamentals of modelling and simulation of turbulent, reacting flows in the areas of multiphase flows (gaseous/liquid and gaseous/solid), chemical reactors and nanoparticle processes. The teaching of IRST covers the fundamentals and advanced topics in reacting flow systems, simulation methods as well as related programming basics.
Since September 1st 2024, ITV changed its name to IRST - Institut für Reaktive Strömungen (Institute for Reactive Flows).
All information about our research and teaching is now available on this website.
For consultation hours see the IRST team page and choose the employee you would like to meet.
The list of currently available topics for Bachelor and Master theses can be found HERE.
Available Praktika:
- Bestimmung laminarer und turbulenter Nusselt-Zahlen für Rohrströmungen - Nils Hartmann
- Simulation des Turbulenzverhaltens eines umströmten Zylinders - Jan W. Gärtner
- Simulation turbulenter Flammen - Sergio Gutiérrez
Registration via Campus.
Contact:
We offer to the students the opportunity to take part in the upcoming presentations of the student research projects and master theses at IRST and to receive proof of this (form "seminar lectures").
2024
Tue, Jan 09 02:00 PM
Xihe Wang
"A study of mixing time scales for a sparse particle method"
Master defense
Fri, Jan 26 04:00 PM
Yichong Zhou
"Fully-resolved simulations of homogeneous and heterogeneous ignition processes in solid fuel combustion"
Master defense
Tue, Feb 27 02:00 PM
Daniel Götte
"Simulation of the Near-Nozzle Injection Behavior of Ammonia Using a Multi-Hole Direct Injection Fuel Injector"
SRP defense
Wed, May 08 10:00 AM
Jan W. Gärtner
"Modeling and Simulation of Flash Evaporation of Cryogenic Liquid Jets"
PhD presentation
Tue, May 14 02:00 PM
Sarah Ott
"3D Verdunstungsmodellierung und -simulation in Spaltgeometrien"
Master defense
Mon, June 10 02:00 PM
Daniel Dias Loureiro
"Simulation and Modeling of Droplet Formation in Flash Atomization of Cryogenic Rocket Propellants"
PhD presentation
Tue, June 25 02:00 PM
Weitao Liu
"Sparse-Lagrangian MMC modelling of the Sandia ethylene sooting flame"
mock presentation
Fri, June 28 02:00 PM
Anjul Pandey
"Modelling collision frequencies and predicting bi-variate agglomerate size distributions for bi-disperse primary particle systems"
mock presentation
Tue, July 02 02:00 PM
Nadezhda Iaroslavtceva
"A consistent MMC-LES approach for turbulent premixed flames"
mock presentation
Fri, July 05 02:00 PM
Sergio Gutiérrez Sánchez
"Modelling differential diffusion using a Sparse-Lagrangian particle approach"
mock presentation
Tue, July 09 02:00 PM
Ali Shamooni Pour Dezfouli
"Carrier-phase direct numerical simulation and flamelet modeling of akali metal emissions from pulverized biomass flames"
mock presentation
Fri, September 06 10:00 AM
Nadezhda Iaroslavtceva
"Multiple mapping conditioning for turbulent premixed combustion"
PhD presentation
Fri, October 18 02:00 PM
Anjul Pandey
"Heteroaggregation of nanoparticles in advective environment"
mock presentation
Fri, November 08 12:00 PM
Nils Hartmann
"Numerical analysis of nanoparticle dynamics and deposition in iron particle combustion"
short mock presentation
Wed, November 13 02:00 PM
Jonas Kirchmann
"Modeling and simulation of nanoparticle synthesis in spray flames"
PhD presentation
Fri, November 15 02:00 PM
Evangelia Moutsokou
"Modelling of differential diffusion with sparse particle method in a turbulent mixing layer"
Master defense
Fri, January 31 02:00 PM
Thomas Darmasaputra
"Assessment of numerical models for airlift bioreactors with OpenFOAM"
Master defense
PLACE: Pfaffenwaldring 31, Seminarroom IRST (V31.321), Tuesdays 02:00 - 04:00pm (occasionally Fridays 02:00 - 04:00pm)
For further information see: https://www.irst.uni-stuttgart.de/en/institute/jobs/
Unsolicited applications are welcome!
We offer an IT-Hiwi position.
You can find the job offer in German on our website:
https://www.irst.uni-stuttgart.de/en/institute/jobs
Latest Publications and News
Participation at the 40th International Symposium - Emphasizing Energy Transition
The Institute for Reactive Flows (IRST) participated in the "40th International Symposium - Emphasizing Energy Transition", which was located in Milan, Italy this year. Six PhD students and postdocs presented their research regarding turbulence-chemistry interaction, new fuels, soot modeling and nanoparticle agglomeration in a total of six presentations and four posters. [Conference website]
Modelling differential diffusion using a Sparse-Lagrangian particle approach
Decarbonization of our energy economy is one of our society’s most pressing issues today. The use of fuels like hydrogen and ammonia will be crucial for achieving these goals by significantly reducing green-house gas emissions, and it is therefore mandatory to develop models for cost-efficient and reliable simulations that aid the development process of suitable burner designs. [see more]
The role of thermodiffusion and dimensionality in the formation of cellular instabilities in hydrogen flames
Hydrogen is quickly becoming one of the most important fuels for combustion applications. However, compared to conventional hydro-carbon flames, the high diffusivity of hydrogen makes lean hydrogen flames prone to form cellular instabilities. [see more]
A consistent MMC-LES approach for turbulent premixed flames
A multiple mapping conditioning (MMC) approach is coupled with large eddy simulations (LES) for the prediction of the flame propagation, the flame structure and finite rate chemistry effects including NO formation in turbulent premixed flames. The mixing term in MMC relies on a reference field that characterizes the chemical composition within the flame and it is typically taken to be the reaction progress variable. [see more]
31. German Flame Day for Sustainable Combustion
The Institute for Reactive Flows (IRST) participated in the 31. German Flame Day for Sustainable Combustion, which was held at the TU Berlin. Six PhD students and employees presented the institute’s research of nanoparticle synthesis, hydrogen flames and combustion modelling in six presentations and three posters. The top picture shows (left to right) Prof. Andreas Kronenburg, Thorsten Zirwes, Maximilian Karsch, Sergio Gutiérrez Sánchez, Weitao Liu, Nadezhda Iaroslavtceva and Tien Duc Luu. [Link to the conference]
Thorsten Zirwes receives the Jürgen-Warnatz-Award
Thorsten Zirwes, deputy director of the Institute for Reactive Flows (IRST), received the Jürgen-Warnatz-Award from the German Section of the Combustion Institute this September. The award is given biannually during the German Flame Day, which was held at the TU Berlin this year. The Jürgen-Warnatz-Award honors “outstanding young scientists in the field of combustion”. The picture shows Thorsten Zirwes together with Prof. Henning Bockhorn after the award ceremony on the Wannsee.
Fully-resolved simulations of volatile combustion and NOx formation from single coal particles in recycled flue gas environments
Authors: A. Shamooni, O.T. Stein, A. Kronenburg, A.M. Kemp, P. Debiagi, T. Li, A. Dreizler, B. Böhm, C. Hasse
The interaction of coal particles and recycled/recirculated flue gas (RFG) with elevated temperatures and low levels of oxygen occurs in various pulverised coal combustion scenarios. In this work, the effect of oxygen level and temperature on single coal particle combustion characteristics and NOx formation in N2 diluent is studied by means of fully-resolved particle simulations. [see more]
A comparative study of two-phase coupling models for a sparse-Lagrangian particle method
Authors: M. Sontheimer, A. Kronenburg, O.T. Stein
Simulations of spray combustion in statistically homogeneous turbulence with different droplet loadings are performed using a sparse-Lagrangian particle method called MMC. We compare different models for the distribution of the droplet source terms to the notional particles with corresponding CP-DNS data and solutions of a dense particle method that employs standard models for the two-phase coupling. [see more]
Modeling of Sub-Grid Conditional Mixing Statistics in Turbulent Sprays Using Machine Learning Methods
Authors: S. Yao, B. Wang, A. Kronenburg and O. T. Stein
Deep artificial neural networks (ANNs) are used for the modeling of the sub-grid scale mixing quantities such as the filtered density function (FDF) of mixture fraction and the conditional scalar dissipation rate. A deep ANN with four hidden layers is trained with carrier-phase direct numerical simulations (CP-DNS) of turbulent spray combustion. [see more]
Carrier-phase DNS of detailed NOx formation in early-stage pulverized coal combustion with fuel-bound nitrogen
Authors: A. Shamooni, P. Debiagi, B. Wang, T. D. Luu, O. T. Stein, A. Kronenburg, G. Bagheri, A. Stagni, A. Frassoldati, T. Faravelli, A. M. Kempf, X. Wen and C. Hasse
Carrier-phase direct numerical simulation of detailed NOx formation in pulverized coal flames (PCC) with fuel-bound nitrogen is conducted in a 3D temporally evolving mixing layer setup where Lagrangian particles (Colombian bituminous coal) in an air stream (upper half of the domain) mix with the products of lean volatile/ air combustion in the lower stream. [see more]
Contact
Andreas Kronenburg
Univ.-Prof. Dr.Director of the Institute
Thorsten Zirwes
Dr.-Ing.Deputy director
Ricarda Schubert
Administrator