实验流体力学2026，Vol.40Issue(1)：107-116,10.DOI:10.11729/syltlx20230161
考虑温度影响的PSP动态校准方法及特性研究
The dynamic calibration method of PSP and its characteristics research considering the influence of temperature
摘要
Abstract
The dynamic characteristics and temperature effects of fast-response pressure-sensitive paint are the key factors for determining whether it is applicable to unsteady flow fields.This paper proposes a method for dynamic calibration of fast-response PSP(Pressure-Sensitive Paint),establishes a controllable calibration standing wave field through a dynamic calibration system that can adjust the temperature and frequency,and researches on the influence of temperature on pressure sensitivity and frequency response characteristics of the developed PC-PSP(Polymer Ceramic Pressure-Sensitive Paint).Dynamic calibration reflects the PSP characteris-tics more accurately than static calibration.Frequency changes have a significant effect on the pressure sensitivity of PC-PSP,and the influence of temperature on the pressure sensitivity of PC-PSP is not significant,while the temperature sensitivity of PC-PSP cannot be ignored in measure-ment.At the same temperature,the gain decreases and the phase lags behind as the frequency increases.At different temperatures,with the increase of the temperature,the cut-off frequency increases,and the phase lag gradually weakens.The dynamic pressure sensitivity at 20℃and 0.5 kHz is 0.59%/kPa,and at 20℃and 3 kHz is 0.51%/kPa,with the cut-off frequency being 4.8 kHz.Therefore,the performance of the tested PC-PSP is stable and meets the engineering requirements for unsteady flow field pressure measurement tests in low-speed wind tunnels.关键词
快响应PSP/聚合物陶瓷压敏涂料/动态校准/驻波场/温度影响/压力灵敏度/动态特性Key words
fast-response PSP/Polymer Ceramic Pressure-Sensitive Paint(PC-PSP)/dynamic calibration/standing wave field/temperature influence/pressure sensitivity/dynamic characteris-tics分类
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刘强,李强,魏春华,尹熹伟,蒋海林,梁磊..考虑温度影响的PSP动态校准方法及特性研究[J].实验流体力学,2026,40(1):107-116,10.基金项目
国家自然科学基金项目(12202476) （12202476）
国家重点研发计划项目(2020YFA0405700) （2020YFA0405700）
