| Summary: | 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.
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