398 citations · 483 across the 9 of their papers we have counts for
11 papers · 1 filter
Effect of Additively Manufactured Wall Lattice Structures on Flashback Limits in a Hydrogen Jet Flame Combustor
Alexander Jaeschke, Thomas Ludwig Kaiser, Lukas Melzig +3
This study investigated how additively manufactured nozzles with body-centered cubic lattice structures reduce the flame flashback propensity in a hydrogen jet flame burner. Five d…
Frequency Scaling Laws for Flat Plate Wing Active Separation Control
Stefan Vey, Christian Oliver Paschereit, David Greenblatt
Dimensionless frequency scaling laws for active separation control on flat-plate wings, using dielectric barrier discharge plasma actuators, were examined on the basis of maximum i…
Experimental jet control with Bayesian optimization and persistent data topology
Johann Moritz Reumschüssel, Yiqing Li, Philipp Maximilian zur Nedden +3
This study experimentally optimizes the mixing of a turbulent jet at with the surrounding air by targeted shear layer actuation. The forcing is composed of superposed ha…
Pressure gain combustion for gas turbines: Analysis of a fully coupled engine model
Rupert Klein, Maikel Nadolski, Christian Zenker +2
The ``Shockless Explosion Combustion" (SEC) concept for gas turbine combustors, introduced in 2014, approximates constant volume combustion (CVC) by harnessing acoustic confinement…
Stochastic modelling of a noise driven global instability in a turbulent swirling jet
Moritz Sieber, C. Oliver Paschereit, Kilian Oberleithner
A method is developed to estimate the properties of a global hydrodynamic instability in turbulent flows from measurement data of the limit-cycle oscillations. For this purpose, th…
Anchoring of Turbulent Premixed Hydrogen/Air Flames at Externally Heated Walls
S. Klukas, M. Sieber, M. Giglmaier +3
A joint experimental and numerical investigation of turbulent flame front anchoring at externally heated walls is presented. The phenomenon is examined for lean hydrogen/air mixtur…
Investigation of the Exhaust Flow of a Pulse Detonation Combustor at different Operating Conditions based on High-Speed Schlieren and PIV
Mohammad Rezay Haghdoost, Daniel Edgington-Mitchel, Christian Oliver Paschereit +1
The exhaust flow of a Pulse Detonation Combustor (PDC) is investigated for different operating conditions. The PDC consists of two units, the deflagration to detonation transition…
On the nature of spectral proper orthogonal decomposition and related modal decompositions
Moritz Sieber, C. Oliver Paschereit, Kilian Oberleithner
The spectral proper orthogonal decomposition (SPOD) is a newly introduced extension of snapshot POD that recently gained attention but also brought up controversial issues. Within…
An assessment of turbulence models for linear hydrodynamic stability analysis of strongly swirling jets
Lothar Rukes, Christian Oliver Paschereit, Kilian Oberleithner
Linear stability analysis has proven to be a useful tool in the analysis of dominant coherent structures, such as the von Kármán vortex street and the global spiral mode associated…
Transient evolution of the global mode in turbulent swirling jets: experiments and modal stability analysis
Lothar Rukes, Moritz Sieber, Oliver Paschereit +1
Modal linear stability analysis has proven very successful in the analysis of coherent structures of turbulent flows. Formally, it describes the evolution of a disturbance in the l…
Spectral proper orthogonal decomposition
Moritz Sieber, Kilian Oberleithner, Christian Oliver Paschereit
The identification of coherent structures from experimental or numerical data is an essential task when conducting research in fluid dynamics. This typically involves the construct…