Research On The Performance Matching Of Overall Engine And Auxiliary Systems

Development of aviation engines need to consume a lot of time and it takes a huge amount ofcost. With the development of computer technology, the importance of the aviation engine computersimulation throughout the development process more and more.In this paper, the use of object-oriented analysis and design methods of the engine, in theVS2005platform using C++language independently developed a dual-rotor applies to a turboshaftgas turbine numerical simulation software, which can eventually work together to complete thisstation gas turbine match point in the design and off-design of the various components.At the beginning of the research, the author completes the separating of components geometryfrom the dual-rotor turbine turboshaft on commercial software ICEM complete set of geometricmodulus and uses TurboGrid software to complete the division of the various components of the grid.Finally, use CFX software to conduct a CFD calculations obtained characteristic curve of eachcomponent for the core machine with components (two-stage compressor, the main combustionchamber, two-stage gas generator turbine and power turbine).In the preparation process of the gas turbine numerical simulation software, firstly establish thedual-rotor turbine numerical simulation software system framework, and then construct amathematical model of the components of the gas turbine and the analysis of the various componentsof the pneumatic module thermodynamic cycle calculation. In the dual-rotor turbine stationarymachine part of the calculation program created to analyze the problems of the conventional methodof Newton-Raphson iterative calculation process in the whole face, and the literature related to gasturbine steady calculation of years of research in terms of its author the improved method of thissoftware program recalculation section corresponding design, eventually found to strengthen thestability of the iterative calculation, improve the iteration speed.Finally, focus on the studying of the whole engine and auxiliary systems in terms of performancematching. By introduced the fuel system, researches the matching problem of the engine and theauxiliary. Use FLOWMASTER to model the fuel system’s explorer road and calculate, and obtain thecharacteristic curves. Make the auxiliary participant the solving of interpolating with the engine. Inthe end, get the results of steady state characteristic’s calculating.