Real-time modular dynamic modeling for compression system of altitude ground test facilities |
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Institution: | 1. School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China;2. AECC Sichuan Gas Turbine Establishment, Mianyang 621703, China;3. State Key Laboratory of Compressor Technology (Compressor Technology Laboratory of Anhui Province), Hefei 230031, China |
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Abstract: | Modeling of a centrifugal compressor is of great significance to surge characteristics and fluid dynamics in the Altitude Ground Test Facilities (AGTF). Real-time Modular Dynamic System Greitzer (MDSG) modeling for dynamic response and simulation of the compression system is introduced. The centrifugal compressor, pipeline network, and valve are divided into pressure output type and mass flow output type for module modeling, and the two types of components alternate when the system is established. The pressure loss and thermodynamics of the system are considered. An air supply compression system of AGTF is modeled and simulated by the MDSG model. The simulation results of mass flow, pressure, and temperature are compared with the experimental results, and the error is less than 5%, which demonstrates the reliability, practicability, and universality of the MDSG model. |
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Keywords: | Altitude Ground Test Facilities (AGTF) Compression modeling Dynamic simulation Real-time modelling Modular Dynamic System Greitzer(MDSG) modeling |
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