Transcritical Combustion
Scalable High-Fidelity Simulations of Reacting Multiphase Flows at Transcritical Pressure
Mohamad Fathi (TU Delft - Aerodynamics)
S. Hickel – Promotor (TU Delft - Aerodynamics)
D.J.E.M. Roekaerts – Promotor (TU Delft - Fluid Mechanics)
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Abstract
We address a fundamental challenge in modern propulsion and energy systems: accurately modeling combustion under transcritical conditions, where operating pressures exceed the critical pressure of the fuel but still lower than cricondenbar values of the air-fuel mixture, leading to a complicated thermophysical mixture behavior. Transcritical regimes are characterized by strong non-idealities and the possible coexistence of vapor and liquid phases. The main objective of this work is to develop a high-fidelity, physically consistent, and computationally efficient simulation framework that captures these phenomena within a Large Eddy Simulation (LES) context, enabled by a Multiphase Thermodynamics (MT) approach.