A5065165973- Advanced Thermodynamic Systems and Engines
- Combustion and flame dynamics
- Advanced Thermodynamics and Statistical Mechanics
- Particle Dynamics in Fluid Flows
- Fluid Dynamics and Mixing
- Wind and Air Flow Studies
- Electrohydrodynamics and Fluid Dynamics
University of Genoa
2023-2024
Thermoacoustic instabilities arise from the feedback between an acoustic field and unsteady heat released in a burner, yielding self-sustained oscillations. A fundamental framework for modelling thermoacoustic systems where mean flow is present introduced, based on definition of adjoint Green's function which permits to convert analogy equation into integral equation. The problem produces sensitivity functions quantify response system initial, boundary or other forcing terms. simple...
The Sauter mean diameter, d32, is a representative parameter in emulsions that indicates the average size of oil droplets once emulsion becomes stable. Several mathematical and physical approaches have been employed literature to seek expressions for d32 under different conditions. present work sheds light on this rich emphasizes characterization still fertile field investigation. In paper, new Π-theorem-based model predict normalized diameter specific case rotor-stator emulsification sought...
Clean combustion such as hydrogen for the reduction of NOx emission is prone to thermoacoustic instabilities, which may cause structural vibrations and equipment failures. In present work, an adjoint-based sensitivity analysis applied a low-order model with non-zero mean flow. The can be powerful tool yield information optimization techniques eliminate or control instabilities. With quick low-cost calculations, base-state are achieved conditions most sensitive instabilities identified.