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DNS and linear stability analysis

Lupe

of oscillating liquid jets

Stability and resolvent analysis

Lupe

for modelling of trailing-edge noise of wind turbine blades

Stability and resolvent analysis

Lupe

for modelling of wavepackets in broadband turbulent flows

Active flow control

Lupe

of hydrodynamic instabilities in gas turbine combustors

Linearised mean-field models

Lupe

for thermoacoustic prediction of turbulent flames

High-speed diagnostics

Lupe

of shock dynamics in pulse detonation combustors

Global stability and sensitivity analyses

Lupe

for flow control of turbulent swirling jets

Active flow control

Lupe

for load control of wind turbine blades

Control of shock dynamics

Lupe

for pulse detonation engines

Stochastic modelling

Lupe

of coherent structures in turbulent flows

Data-based modal analysis

Lupe

of coherent structures in turbulent flows

Combining modelling with experiments

Lupe

for development of commercial gas turbine combustors

Adjoint-based development

Lupe

of optimal flow control in Francis turbines

News

PHD defense

20.05.2021

We are delighted to announce that Finn Lückoff passed his doctoral defense last week. Congratulations Finn!

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Publications

13.04.2021

Moritz und Kilian published a paper on the Stochastic modelling of a noise-driven global instability in a turbulent swirling jet in JFM. 

Mohammad and Kilian published an open-access paper on the Mitigation of Pressure Fluctuations From an Array of Pulse Detonation Combustors in J. Eng. Gas Turbines Power (ASME). 

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Courses in summer semester 2021

07.04.2021

This semester we offer two online courses: Control of turbulent flows and Data analysis techniques in thermo-fluid dynamics. For more details on the schedule please click on the linked course pages.

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Publications

06.04.2021

ThomasSimon and Kilian published recently two papers in JFM: 

Publication

25.03.2021

Finn und Kilian published together with Amrit Adhikari (former Master student of our group) and Thorge Schweitzer from FDX Fluid Dynamics GmbH an article on the Design of a Fluidic Actuator with Independent Frequency and Amplitude Modulation for Control of Swirl Flame Dynamics in der Special Issue "Fluidic Oscillators-Devices and Applications" in Fluids Journal.

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Publication

03.02.2021

Sirko and Kilian published a paper on the Pressure-based lift estimation and its application to feedforward load control employing trailing-edge flaps in Wind Energy Science.

Moritz and Kilian published a paper on the Stochastic modelling of a noise driven global instability in a turbulent swirling jet in Journal of Fluid Mechanics.

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PHD defence

11. November 2020

We are delighted to announce that Moritz Sieber passed his doctoral defence with the excellent grade summa cum laude

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11. November 2020

Publication

MarcMoritz and Kilian published an open source paper on the Identification of coherent structures in horizontal slug flow in Flow Measurement and Instrumentation.

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2. November 2020

Publications

Two new journal publications in the field of: “Active Flow Control of the Precessing Vortex Core (PVC) in swirl flames:

Mean field coupling mechanisms explaining the impact of the precessing vortex core on the flame transfer function” in Combustion and Flame. 

Impact of the Precessing Vortex Core on NOx Emissions in Premixed Swirl-Stabilized Flames—An Experimental Study in Journal of Engineering for Gas Turbines and Power.

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1. November 2020

Publications

Jens and Kilian published a paper on the Predicting Wind Turbine Wake Breakdown Using a Free Vortex Wake Code in AIAA Journal. 

Mohammad and Kilian published a paper on the Dynamic evolution of a transient supersonic trailing jet induced by a strong incident shock wave in Physical Review Fluid. 

Marc und Kilian published an open access paper on the Statistical characterization of horizontal slug flow using snapshot proper orthogonal decomposition in International Journal of Multiphase Flow.

Marc published a paper on the Numerical simulation, validation, and analysis of two-phase slug flow in large horizontal pipes in Flow Measurement and Instrumentation.

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22 October 2020
Our courses this winter semester 2020/2021

This semester we will offer two courses: Introduction to turbulent flows and the project in thermo-fluid dynamics. For more information about contents and schedule, just click on the links please!

 

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14 April 2020
Details about our online courses

The courses Kontrolle turbulenter Strömungen and Methoden der Datenanalyse in der Thermofluiddynamik will be offered completely online via ISIS (KTS, MDTF). The contents of the lectures will be provided by screencasts. In addition, there will be online meetings once a week as well as a forum available for questions and discussions about the teached contents. The first appointment will take place live in virtual presence. For

KTS: on Tuesday, 21/04/2020 at 2.15 pm (see ISIS),

MDTF: on Friday, den 24/04/2020 at 10.15 am (see ISIS).

 

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30 March 2020
Our courses will take place in summer term 2020!

Although the TU Berlin is largely shut down, the courses Kontrolle turbulenter Strömungen and Methoden der Datenanalyse in der Thermofluiddynamik will be offered this summer term! Further details on how everything will run online are going to be announced here and on ISIS (KTS, MDTF) soon.

 

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4 February 2020
Big success at the 
ASME TurboExpo 2019: Two BEST PAPER AWARDS!

We just learned that Thomas and Kilian, together with the co-authors at two of our partner institutes (LadHyx in Paris and IMFT/CERFACS in Toulouse), swept the board at the ASME TurbExpo Conference 2019 in Phoenix, USA! Even two of our articles were chosen for a Best Paper Award! We are looking forward to receive the prices at the ASME TurboExpo 2020 in London!

GTP-19-1433: Examining The Effect of Geometry Changes in Industrial Fuel Injection Systems on Hydrodynamic Structures with Biglobal Linear Stability Analysis

Authors: Thomas Ludwig Kaiser (TU Berlin), Kilian Oberleithner (TU Berlin), Laurent Selle (IMFT, Toulouse), Thierry Poinsot (CERFACS, Toulouse)

GTP-19-1375: Prediction of the Flow Response of a Turbulent Flame to Acoustic Perturbations Based on Mean Flow Resolvent Analysis

Authors: Thomas Ludwig Kaiser (TU Berlin), Lutz Lesshafft (LadHyx), Kilian Oberleithner (TU Berlin)

 

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15 January 2020
AIAA SciTech 2020

Mohammad and Bhav presented their work regarding Shock-Dividers at the SciTech 2020. Mohammad gave a talk about Evaluation of Shock Dividers using Numerical and Experimental Methods und Bhav talked about Redistribution of Transient Shock Waves Using Shock Dividers.

 

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18 December 2019
Publication

Jens, Moritz und Kilian published a paper as co-athors on the Single-and double-helix vortex breakdown as two dominant global modes in turbulent swirling jet flow in Journal of Fluid Mechanics. 

 

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25 November 2019
Publication

Simon and Kilian published a paper on the Instability of forced planar liquid jets: mean field analysis and nonlinear simulation in Journal of Fluid Mechanics. 

 

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26 July 2019
International Symposium on Turbulence and Shear Flow Phenomena (TSFP11)

Phobe and Jens attend the International Symposium on Turbulence and Shear Flow Phenomena, which takes place in Southampton, UK from July 30 to Juni 2, 2019. Here, Jens and Phobe give a talk about a "Modal analysis of coherent structures in a self-similar turbulent boundary layer with adverse pressure gradient" and ''Spectral decomposition of the turbulent self-similar jet and recomposition using linear dynamics", respectively. 

 

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3 June 2019
Publication

As a co-athor Kilian published a paper on the Generation and Transport of Equivalence Ratio Fluctuations in an Acoustically Forced Swirl Burner in the Combustion and Flame journal. The article can be downloaded for free until September 20 here

 

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13 May 2019
Publication

Finn published an open acess paper on the Excitation of the precessing vortex core by active flow control to suppress thermoacoustic instabilities in swirl flames in the International Journal of Spray and Combustion Dynamics. 

 

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6 May 2019
Talk in the Colloquium
: "Dynamics of Transient Supersonic Jets: Development of a Shock Tube Facility"

On Friday, May 10, 2019, Bhav Thethy will give a talk on ”Dynamics of Transient Supersonic Jets: Development of a Shock Tube Facility” within the scope of our colloquium. The talk will start at 2 pm in the Alte Bibliothek of the HF building. Everyone interested is invited to join!

 

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24 April 2019
Seventeenth International Conference on Numerical Combustionin
 

Kilian and Thomas attend the Seventeenth International Conference on Numerical Combustionin, which takes place in Aachen from May 6 to May 8, 2019. Here, Kilian and Thomas give a talk about a "Active Flow Control of the Precessing Vortex Core in a Swirl-stabilized Combustor: Impact on Flame dynamics" and ''Resolvent Analysis: A Way to Extract Flame Transfer Functions out of Mean Flow Data?", respectively. 

 

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