Deformation Analysis and Prediction of Pneumatic Probe Based on Fluid-structure Interaction

Yang Fan; Qiu Dexin; Zhao Xinwei; Sai Qingyi; Cai Xiaoshu

doi:10.5293/IJFMS.2023.16.1.001

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자료유형: 학술저널

저자정보: Yang Fan (University of Shanghai for Science and Technology) Qiu Dexin (University of Shanghai for Science and Technology) Zhao Xinwei (University of Shanghai for Science and Technology) Sai Qingyi (University of Shanghai for Science and Technology) Cai Xiaoshu (University of Shanghai for Science and Technology)

저널정보: 한국유체기계학회 International Journal of Fluid Machinery and Systems International Journal of Fluid Machinery and Systems Vol.16 No.1

발행연도: 2023.3

수록면: 1 - 13 (13page)

DOI: 10.5293/IJFMS.2023.16.1.001

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As an essential tool for measuring flow field, pneumatic probes have gained a wide range of applications. In order to obtain the flow field param eters accurately, it is also crucial to study the deformation of the pneumatic probe structure in flow field. In this paper, the deformation of the conical probe is numerically simulated under the condition of steady incoming flow in the transonic flow field. The fluid-structure interaction and modal analysis methods are used to obtain the deformation and vibration frequency of the probe. The results show that the vibration of the probe is underdamped under the action of two-way fluid-structure interaction and the total deformation decays exponentially, and the total deformation after stabilization is the same as the result of one-way fluid-structure interaction. For the same material probe, the total deformation changes with time in the same dimensionless expression, and the vibration frequency as well as damping factor do not change due to the variation of flow field. The accuracy of the dimensionless expressions was verified by different incoming flow conditions and the probe material . For the cases studied in this paper, the maximum total deformation, vibration frequency and damping factor of the probe in the flow field can be obtained by using one-way fluid-structure interaction, modal analysis and two-way fluid-structure interaction with a small number of cycles, respectively, so that the total deformation of the probe in the flow field can be predicted over time. The method obtained in this paper can significantly reduce the calculation time for obtaining the probe deformation data in the flow field and improve the work efficiency, which can provide a reference for the design, calibration and application of probes in engineering applications.

#pneumatic probe #transonic flow #fluid-structure interaction #modal analysis #deformation prediction

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