Date: 3 October 2025, 13:00-14:00 CET
Title: How to incorporate fluid-structure interaction into low-order modeling of thermoacoustic instabilities
Speaker: Claire Bourquard, Assistant Professor of Mechanical Engineering, Eindhoven University of Technology, Netherlands
Abstract: Thermoacoustic instabilities in combustion systems arise from the interaction between unsteady heat release and the acoustic field. Low-order models are widely used to study these phenomena due to their computational efficiency and ability to capture essential dynamics. Incorporating fluid-structure interaction (FSI) into low-order models offers a promising route to better predict and mitigate these instabilities. This approach accounts for energy exchange between acoustic pressure and structural dynamics, which can introduce localized damping without altering global acoustic modes. Through the modeling of an experiment involving a flexible metallic plate in combustor walls, we demonstrate that effective damping depends on modal behaviour and net power absorption, not just resonance tuning.
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