@phdthesis{ReyVillazon2015, author = {Rey Villaz{\´o}n, Jose Mar{\´i}a}, title = {Advanced aero engine common preliminary design environment for the automatic construction of secondary air system and thermal models}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-36011}, school = {BTU Cottbus - Senftenberg}, year = {2015}, abstract = {The state of the art in aero engine design and analysis methods is based on mature computer programs, which have been developed during several decades. The classical approach to the preliminary design phase of engine subsystems is to split the complex engineering process into disciplines and subtasks. Different experts manage the time-consuming modelling work. Due to the increasing demand for higher aero engine performance and design cycle time reduction, process integration, accuracy and agility have become key assets of the engineering work-flow. The intention of this work is to show how multi-disciplinary integration, work-flow automation and CFD-enhanced thermal modelling methods can be used efficiently to support the aero engine preliminary design phase, with focus on the high pressure turbine subsystem. A Java based common design environment for the engine secondary air system, rotors and thermal design disciplines has been developed. This design environment enables the automatic generation of CAD, flow network and thermal models. The improvements in terms of process agility and model prediction accuracy are demonstrated with the application of the implemented process to a reference high pressure turbine subsystem. For validation purposes, the preliminary design definition of the reference turbine case is reproduced. The automatically generated secondary air system and thermal models can replicate the same level of detail as the previous manual approach. It was found that the CFD-enhanced thermal model improves the prediction accuracy in the preliminary design stage, when no engine test data is available.}, subject = {Aero engine design system; Secondary air system; Turbine rotor; Thermal modelling; Process integration; Triebwerkskonstruktion; Sekund{\"a}rluftsystem; Thermal Modellierung; Prozessintegration; Flugtriebwerk; Konstruktion; W{\"a}rme{\"u}bertragung; Modellierung}, language = {en} }