A Numerical Simulation of Turbofan Engine Performance

• Main Authors: Jian Hong Lui, 劉建宏
• Other Authors: Denz Lee
• Format: Others
• Language: zh-TW
• Published: 1995
• Online Access: http://ndltd.ncl.edu.tw/handle/25376661765052467046

碩士 === 國立成功大學 === 航空太空工程學系 === 83 === In the design process of aircraft engine, one of the most important tasks is to predict and analyze the design and off- design engine performance. Using the computer simulation program to do the above job can reduce significantly manpower、 time and money. Therefore, the beginning task in designing modern aircraft engine starts from the computer simulation. Generally, the computer simulation of engine performance includes : 1) simulation of steady-state engine performance, 2) simulation of transient engine performance. The simulation of steady-state engine performance includes the simulation of design engine performance and the simulation of off-design engine performance. The simulation of steady-state engine performance which is based on the basis of the thermodynamic cycle calculation is the basis of all the design and analysis of engine performance. Simulation of transient engine performance which follows finishing the steaty-state simulation analyzes the dynamic response of each parameter of engine performance. And, it is the basis for developing the control system of the turboengine . In this thesis, simulation of the steady-state engine performance of the 2-spools turbofan is carried out. Thermodynamic cycles includeisentropic、compressing 、 combusting、expanding、 mixing processes. Methods for calculating the properties of the working fluid、 the hypotheses and methods for the thermodynamic calculation of every components of turbofan engine at the design point are discussed. At the end, an example was given to demonstrate the use of this program for analysis of the steady-state design and off-design engine performance.