Abstract
The article describes the concept of a virtual lab that includes subsystem of gas turbine engine simulation, subsystem of experiment planning, subsystem of measurement errors simulation, subsystem of simulator identification and others. The basis for virtual lab development is the computer-aided system of thermogasdynamic research and analysis “ASTRA”. The features of gas turbine engine transient modes simulator are described. The principal difference between the simulators of transient and stationary modes of gas turbine engines is that the energy balance of the compressor and turbine becomes not applicable. The computer-aided system of virtual gas turbine engine testing was created using the developed transient modes simulator. This system solves the tasks of operational (throttling, speed, climatic, altitude) characteristics calculation, analysis of transient dynamics and selection of optimal control laws. Besides, the system of virtual gas turbine engine testing is a clear demonstration of gas turbine engine working process and the regularities of engine elements collaboration. The interface of the system of virtual gas turbine engine testing is described in the article and some screenshots of the interface elements are provided. The developed system of virtual gas turbine engine testing provides means for reducing the laboriousness of gas turbine engines testing. Besides, the implementation of this system in the learning process allows the diversification of lab works and therefore improve the quality of training.
Highlights
IntroductionModelling is the most popular way of complex systems (technical objects and control systems) examination during the designing, development and analyzing [1]
Modelling is the most popular way of complex systems examination during the designing, development and analyzing [1].Simulation modelling is a method of experiment simulation: real-time experimental investigation of a virtual prototype of an engine that is implemented using a simulator instead of an engine itself.One of the important ways to provide a high efficiency of the engine designing process is to develop a virtual model of its working process, suitable for use during all the stages of engine life cycle
Physical experimental investigations of the gas turbine engines are quite time-consuming and expensive, so it is a good policy to combine them with a virtual investigations during the design and development stages
Summary
Modelling is the most popular way of complex systems (technical objects and control systems) examination during the designing, development and analyzing [1]. Simulation modelling is a method of experiment simulation: real-time experimental investigation of a virtual prototype of an engine that is implemented using a simulator instead of an engine itself. One of the important ways to provide a high efficiency of the engine designing process is to develop a virtual model of its working process, suitable for use during all the stages of engine life cycle. Physical experimental investigations of the gas turbine engines are quite time-consuming and expensive, so it is a good policy to combine them with a virtual investigations during the design and development stages. Thermogasdynamic models of the gas turbine engines (GTEs), implemented using the ASTRA are suitable for calculating the performance data, optimizing the control programs of engines and other tasks of conceptual designing
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