Lifetime based pressure and temperature sensitive paint measurement on a civil aircraft wing under conditions near the onset of shock-induced separation
نویسندگان
چکیده
Abstract Lifetime-based pressure- and temperature-sensitive paint (PSP TSP) measurements were conducted in a large-scale industrial transonic wind tunnel to obtain high-quality pressure data for validation of computational fluid dynamics (CFD) simulations. A test was performed using the NASA Common Research Model JAXA 2 m × Transonic Wind Tunnel (JTWT1). The freestream Mach number varied range 0.70 0.89, aerodynamic forces moments acquired order pitch break condition related onset shock-induced separation. Polymer-based PSP coated on main wing model, TSP used tandem with correct temperature dependence PSP. two-gate lifetime-based method applied emissions. An a-priori/in-situ hybrid calibration convert ratio-of-ratios pressure, measured distributions mapped onto three-dimensional (3D) model grid. root-mean-square error evaluated by tap approximated be 0.8 kPa all numbers tested. obtained exhibited significantly high signal-to-noise ratio comparison CFD results 3D high-spatial-resolution helped accurately localize differences from simulation state-of-the-art tools showed that prediction shock location along is still relevant challenge.
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ژورنال
عنوان ژورنال: Measurement Science and Technology
سال: 2023
ISSN: ['0957-0233', '1361-6501']
DOI: https://doi.org/10.1088/1361-6501/acf8e2