Ian Halliwell from the US and I have together written a book that deals with gas turbines as they are used for aircraft propulsion and ground-based power generation. While both applications are discussed, we focus primarily on propulsion.
All the figures with numerical results contain truly calculated results – they are not cartoons. Many of the figures can be reproduced exactly by the reader with GasTurb™. If you use another professional gas turbine performance code, then your numbers will be very close to what you see in this book. If you observe significant differences between the GasTurb™ output and your results then you are likely to have used different input data or boundary conditions.
Whenever you use modern simulation software remember: you are trying to model and visualize physics. Before you start a calculation, it is best to have an idea about what the result will be. Do not just click buttons before you have an understanding of what they are doing. Challenge your result: does it make sense?
Part A of the book describes solutions to overall system simulation requirements. Highlights are sections about preliminary engine design, how to match a performance model to available data, engine performance analysis, inlet flow distortion and high-fidelity simulations of transients. The material is presented in many examples and the reader may explore this part of the book to find similar problems to his or her own and how they may be tackled.
Part B deals with the process of preliminary aircraft engine design and the role of performance in an engine development program. Focus is on the aerodynamic design of axial compressors and turbines, the design envelope methodology and an engine geometry model.
Part C refers the reader to off-design models for the most important gas turbine components. The principles of how to scale and verify compressor and turbine maps are discussed in more detail than in other books. Also, new information on the afterburner and convergent-divergent nozzle models is not found elsewhere. A comprehensive section explains the principles of how the components relate to each other and are integrated to make a complete gas turbine.
Part D describes basic correlations, broader topics beyond components and mathematical algorithms. Non-dimensional performance is explained in an unusual way, without referring to higher mathematics. Further highlights are the sections about modeling cooled turbines and the secondary air system.