A state-space formulation of a discontinuous Galerkin method for thermoacoustic stability analysis

M Meindl, A Albayrak, W Polifke - Journal of Sound and Vibration, 2020 - Elsevier
A hybrid approach for thermoacoustic stability analysis is formulated in a state-space
framework. The approach distinguishes between regions of the computational domain with …

A FEM Flow Impact Acoustic Model Applied to Rapid Computation of Ocean-Acoustic Remote Sensing in Mesoscale Eddy Seas

Y Liu, J Xu, K Jin, R Feng, L Xu, L Chen, D Chen… - Remote Sensing, 2024 - mdpi.com
Mesoscale eddies have an impact on the marine environment mainly in two areas, namely,
currents and changes in the sound velocity gradient due to temperature and salt stirring. The …

A novel modal expansion method for low-order modeling of thermoacoustic instabilities in complex geometries

C Laurent, M Bauerheim, T Poinsot, F Nicoud - Combustion and Flame, 2019 - Elsevier
This work proposes an improvement to existing methods based on modal expansions used
for the prediction of thermoacoustic instabilities in zero Mach number flow conditions …

The nonlinear thermoacoustic eigenvalue problem and its rational approximations: assessment of solution strategies

M Merk, PE Buschmann… - … of Engineering for …, 2023 - asmedigitalcollection.asme.org
Nonlinear eigenvalue problems (NLEVPs) arise in thermoacoustics by considering the
temporal evolution of small perturbations in the relevant governing equations. In this work …

Time-domain Bloch boundary conditions for efficient simulation of thermoacoustic limit cycles in (can-) annular combustors

M Haeringer, W Polifke - … of Engineering for …, 2019 - asmedigitalcollection.asme.org
Thermo-acoustic eigenmodes of annular or can-annular combustion chambers, which
typically feature a discrete rotational symmetry, may be computed in an efficient manner by …

Efficient Forced Response Computations of Acoustical Systems with a State-Space Approach

AJR Pelling, E Sarradj - Acoustics, 2021 - mdpi.com
State-space models have been successfully employed for model order reduction and control
purposes in acoustics in the past. However, due to the cubic complexity of the singular value …

Linear time-continuous state-space realization of flame transfer functions by means of a propagation equation.

P Brokof, G JJ Fournier, W Polifke - INTER-NOISE and NOISE …, 2023 - ingentaconnect.com
Low-order network models, commonly used to assess the thermo-acoustic stability of
combustors, can be cast in a linear, time-continuous state-space representation. A standard …

[引用][C] Linear state space interconnect modeling of acoustic systems

T Emmert, M Meindl, S Jaensch… - Acta Acustica …, 2016 - European Acoustics Association

Low-order modeling and high-fidelity simulations for the prediction of combustion instabilities in liquid rocket engines and gas turbines

C Laurent - arXiv preprint arXiv:2103.01038, 2021 - arxiv.org
Combustion instabilities are a major concern in the design of Liquid Rocket Engines (LREs)
and gas turbines. During this PhD work, several directions were explored to understand and …

[PDF][PDF] Efficient Forced Response Computations of Acoustical Systems with a State-Space Approach. Acoustics 2021, 3, 581–593

AJR Pelling, E Sarradj - 2021 - researchgate.net
State-space models have been successfully employed for model order reduction and control
purposes in acoustics in the past. However, due to the cubic complexity of the singular value …