气动力/热与结构多场耦合试验模型方案初步设计

doi:10.7527/S1000-6893.2017.221165

Abstract

Abstract:

The thermal protection system, which relates to the safety of hypersonic vehicle, is one of the key techniques for the design and manufacture of hypersonic vehicles. The new thermal protection mode based on multi-channel coupling is becoming the main thermal protection mode for new generation hypersonic vehicles. The computation strategy and method for fluid-thermal-structural coupling problem must be considered under this new mode. At present, a mature coupling analysis system has been established and been used in aircraft development abord. In China, the in-house Coupled Analysis Platform for Thermal Environment and structure Response (FL-CAPTER) platform has also been independently developed by China Aerodynamic Research and Development Center (CARDC). In order to verify the effectiveness of the multi-field coupling calculation method, designing a wind tunnel test has very important significance. In this paper, according to coupling test requirements, wind tunnel selection, model size estimation, model material selection, model aerodynamic design and model structure design are carried out based on existing materials and equipment capacities. The preliminary study shows that the local high temperature near the model support structure will be beneficial to produce a considerable deformation in front of the model. On this basis, the exploratory design of the test model is carried out, and the short time wind tunnel test of the stainless steel model is completed. The test model is calculated using the in-house FL-CAPTER platform. The results show that the test model is feasible. This work establishes the foundation for improving the high-temperature alloy test model design.

Key words: multi-field coupling, test model, design, aeroheating, thermal response, thermal deformation

CLC Number:

V211.3

LIU Lei, DAI Guangyue, ZENG Lei, WANG Zhenfeng, GUI Yewei. Preliminary test model design of fluid-thermal-structural interaction problems[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017, 38(11): 221165-221165.

References

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Preliminary test model design of fluid-thermal-structural interaction problems

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