Towards dynamic modelling of thermal management systems for greener aviation
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Greener aviation poses significant thermal management challenges. The shift towards greener aviation concepts and the consequent use of high-power electrical systems (for propulsion or as secondary systems) is likely to cause increased heat generation and the proliferation of low-grade heat sources. Similarly, the introduction of geared architecture technologies increases significantly the heat generated by the propulsion system compared to traditional architectures. Therefore, the capability to design, analyse and optimise thermal architectures becomes of great importance. Many methods of simulation currently rely on a steady-state approach based on effectiveness-NTU methods to analyse heat exchangers ( [1]). However, in future thermal architectures transient operations will be of great interest. Hence, a dynamic modelling capability for thermal management systems is needed. Modelica is identified as a promising tool for this type of analysis [2], which will be extended for multi-disciplinary system design. This work presents an assessment of the capability of steady state modelling techniques as a key enabler.
