Institut für Reaktive Strömungen (IRST)

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]

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 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]

Das Institut für Reaktive Strömungen (IRST) besuchte den 31. Deutschen Flammentag für Nachhaltige Verbrennung, der dieses Jahr an der TU Berlin stattfand. Sechs Doktoranden und Mitarbeiter stellten die Forschung des Instituts zu Nanopartikelsynthese, Wasserstoffflammen und Verbrennungsmodellierung in insgesamt sechs Vorträgen und drei Postern vor. Das Bild zeigt v.l.n.r. Prof. Andreas Kronenburg, Thorsten Zirwes, Maximilian Karsch, Sergio Gutiérrez Sánchez, Weitao Liu, Nadezhda Iaroslavtceva und Tien Duc Luu. [Link zur Konferenz]

Thorsten Zirwes, Mitarbeiter am Institut für Reaktive Strömungen (IRST), hat im September den Jürgen-Warnatz-Preis der Deutschen Sektion des Combustion Instituts erhalten. Der Preis wird alle zwei Jahre auf dem Deutschen Flammentag verliehen, zuletzt ausgetragen an der TU Berlin. Der Jürgen-Warnatz-Preis zeichnet „herausragende Nachwuchswissenschaftler auf dem Gebiet der Verbrennung” aus. Das Foto zeigt Thorsten Zirwes zusammen mit Prof. Henning Bockhorn nach der Verleihung auf dem Wannsee.

Authors: A. Shamooni, O.T. Stein, A. Kronenburg, A.M. Kemp, P. Debiagi, T. Li, A. Dreizler, B. Böhm, C. Hasse

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]

Authors: S. Yao, B. Wang, A. Kronenburg and O. T. Stein

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]