首页|An optimized time-adaptive aerothermal coupling calculation method for aerothermal analysis of disc cavity system

An optimized time-adaptive aerothermal coupling calculation method for aerothermal analysis of disc cavity system

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In order to further achieve the balance between the calculation accuracy and efficiency of the transient analysis of the aero-engine disc cavity system,an Optimized Time-adaptive Aerother-mal Coupling calculation(OTAC)method has been proposed.It combines one-dimensional tran-sient calculation of air system,Conventional Sequence Staggered(CSS)method,Time-adaptive Aerothermal Coupling calculation(TAC)method and differential evolution optimization algorithm to obtain an efficient and high-precision aerothermal coupling calculation method of air system.Considering both the heat conduction in the solid domain and the flow in the fluid domain as unsteady states in the OTAC,the interaction of fluid-solid information within a single coupling time step size was implemented based on the CSS method.Furthermore,the coupling time step size was automatically adjusted with the number of iterations by using the Proportional-Integral-Deri vative(PID)controller.Results show that when compared with the traditional loosely coupling method with a fixed time step size,the computational accuracy and efficiency of the OTAC method are improved by 8.9％and 30％,respectively.Compared with the tight coupling calculation,the OTAC method can achieve a speedup of 1 to 2 orders of magnitude,while the calculation error is maintained within 6.1％.

Air system1D-3D couplingConjugate heat transferTransient calculationAdaptive time step size

Shuai BI、Junkui MAO、Lei WANG、Feng HAN

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College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

AECC Aero Engine Control System Institute,Wuxi 214063,China

Integrated Energy Institute,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

National Natural Science Foundation of ChinaScience Center for Gas Turbine Project,ChinaFundamental Research Funds for the Central Universities,China

52007002P2022-A-Ⅱ-007-001NS2023010

2024

10.1016/j.cja.2024.06.017

中国航空学报(英文版)
中国航空学会

中国航空学报(英文版)

CSTPCDEI
影响因子：0.847
ISSN：1000-9361
年,卷(期)：2024.37(9)
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