quantified in terms of confidence inter- valls for model parameters, which were deduced by residual analysis. Application of this approach to turbulent flames is the topic of an ongoing joint research project with Ecole Centrale in Paris. In collaboration with visiting scientist Luca Magri, post-doctoral researcher Camilo Silva quantified the uncertainties of thermoacoustic stability analysis with a high-order adjoint formulation for the non- linear eigenvalue problem that results from the combination of a time-lagged model for the flame dynamics with a Helmholtz solver for combustion chamber acoustics. Power spectral distribution of noise source This approach promises to confidently downstream of an orifice in ducted flow. Identified model (with confidence band) vs. spectral analysis of assess the thermoacoustic stability of LES time series (from Sovardi et al, 2015) configurations of applied interest with high accuracy and efficieny. Projects Marie Curie FP7 IPN FlowAirs, DFG/ n ANR NoiseDyn, SFB/TRR40 Research Focus n Combustion dynamics n Thermo- and aero-acoustics n Stability analysis n Mixing and reaction in turbulent flows n Polydisperse multi-phase flows n n tion of Competence Thermo-fluid dynamics n n with Combustion modeling Open- n Large eddy simulation n System identification Stability analysis n Low-order acoustic modeling n Infrastructure Compute cluster n Courses Engineering Thermodynamics n Management Wärmetransportphänomene Prof. Wolfgang Polifke, Ph. D. n Wärme- und Stoffübertragung n Administrative Staff Grundlagen der Mehrphasenströmung n Helga Bassett Grundlagen der numerischen TFD Dipl.Ing. (FH) Sigrid Schulz-Reichwald n
quantified in terms of confidence inter- valls for model parameters, which were deduced by residual analysis. Application of this approach to turbulent flames is the topic of an ongoing joint research project with Ecole Centrale in Paris. In collaboration with visiting scientist Luca Magri, post-doctoral researcher Camilo Silva quantified the uncertainties of thermoacoustic stability analysis with a high-order adjoint formulation for the non- linear eigenvalue problem that results from the combination of a time-lagged model for the flame dynamics with a Helmholtz solver for combustion chamber acoustics. This approach promises to confidently assess the thermoacoustic stability of configurations of applied interest with high accuracy and efficieny. Projects n Marie Curie FP7 IPN FlowAirs, DFG/ ANR NoiseDyn, SFB/TRR40 Power spectral distribution of noise source downstream of an orifice in ducted flow. Identified model (with confidence band) vs. spectral analysis of LES time series (from Sovardi et al, 2015) Research Focus n Combustion dynamics n Thermo- and aero-acoustics n Stability analysis n Mixing and reaction in turbulent flows n Polydisperse multi-phase flows Competence n Thermo-fluid dynamics n Combustion modeling n Large eddy simulation n System identification n Stability analysis n Low-order acoustic modeling Infrastructure n Compute cluster Courses n Engineering Thermodynamics n Wärmetransportphänomene n Wärme- und Stoffübertragung n Grundlagen der Mehrphasenströmung n Grundlagen der numerischen TFD n n of with Open- Management Prof. Wolfgang Polifke, Ph. D. Administrative Staff Helga Bassett Dipl.Ing. (FH) Sigrid Schulz-Reichwald tion
28-Polifke-Thermo-Fluid_Dynamics_Group-2015.docx