Modelling of a Gas Turbine with Modelica

Abstract: The report describes the development of a global model of a simple gas turbine in order to simulate the dynamic behaviour. The Modelica language is used for the creation of the model. The model is based on the evaporative gas turbine located in the Department of Heat and Power Engineering in Lund. This turbine was run as a conventional turbine before including the heat exchange and the evaporative tower. The model can be split up in three main parts: the compressor, the combustion chamber and the expander. These three models are based on the equations obtained from thermodynamic literature. Furthermore, information provied by the manufacturer was used for the implementation of the compressor and the expander models. Hence, the thesis is focused first on creating a model of a simple gas turbine byusing as many components of the ThermoFlow library as possible and second on extending the library with reusable models for turbines and compressors. Since the model involves mechanical parts, components of the rotational sub-library are uesd for the task. .