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AssigneeNorthwestern Polytechnical University
InventorsLimin Gao, Ning Ge, Bo Ouyang, Lei Wang, Xiangfu Lei
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Surface pressure measurements on rotating models are important for flow phenomenon identification, understanding flow mechanisms and model aerodynamic design. The disclosure discloses a periodic pressure field measurement system based on the superposed lifetime of pressure sensitive paint, including pressure sensitive paint, a pulse light source, a camera, a synchronizer and a computer. A lifetime superposition method is disclosed in the disclosure for measuring periodic pressure fields of pressure sensitive paint. The disclosure has the beneficial effects: the disclosure acquires, on the basis of a relationship between the fluorescence lifetime of the pressure sensitive paint and the pressure, fluorescence image pair sequence of the pressure sensitive paint with a high signal to noise ratio under a high-frequency pulsating pressure through the strobe light source and the low-frame-rate CCD camera, and obtains the global dynamic pressure distribution according to the measurement principle of the lifetime method, which can effectively reduce system errors.
A periodic pressure field measurement method based on a superposed lifetime of pressure sensitive paint, comprising the following steps:
A periodic pressure field measurement method based on a superposed lifetime of pressure sensitive paint, comprising the following steps:
A periodic pressure field measurement method based on a superposed lifetime of pressure sensitive paint, comprising the following steps:
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