The purpose of this section of VLab is the parametric study of gas turbine performance in order to choose the optimal design parameters. For this reason, user friendly simulation programs for design point analysis of various engine configurations (Turbojet, Turbofan, Turboprop, Turboshaft) are incorporated.
Main Screen of 'Design Study' Section
The included programs have the same interface in order to help students to become familiar with them. Particular attention is also given in the organization of the information so that all the parameters are easily accessible from the main screen.
Main Screen of Turbojet Design Analysis Program
The main screen is divided into different parts performing the following functions
(a) Definition of ambient conditions
(b) Definition of operating point (basic cycle parameters)
(c) Definition of working medium properties
(d) Representation of engine configuration in a mimic diagram
(f) Presentation of the calculation results graphically or in a table format.
The program can perform a single point analysis or an analysis of an operating range for up to two parameters. This is very useful in a study of new engine design since one can examine the influence of different design or operating parameters on engine performance. An example of such calculation is presented bellow where the dependence of specific thrust on compressor pressure ratio for different turbine inlet temperatures is shown.