WebApr 3, 2024 · Abstract. In this study, a series of time-averaged tomographic particle image velocimetry (TPIV) measurements are completed for simple angle, cylindrical film cooling holes on a flat plate with an inclination angle of 30 deg and a diameter of 4 mm. The flat plate is installed in a low-speed wind tunnel with a mainstream turbulence intensity of … Two optimized methods for particle elongation and ghost particles are, respectively, introduced in Sects. 2.2 and 2.3. The intensity-enhanced MART (IntE-MART) algorithm is a combination of these two methods. The flowchart of IntE-MART is given in Fig. 6as follows: 1. (a) Initialize the measurement volume … See more The reconstruction of 3D particles distribution by optical tomography, an inverse procedure of imaging projection, is an advanced technique introduced into the … See more Ignoring the physical causes, the particle elongation can be considered as convolving the original volume with an anisotropic Gaussian kernel. As pointed out by … See more In Sect. 2.2, the inverse diffusion function has been studied to shrink the elongated particles. For another error source of ghost particles, an effective algorithm is … See more

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WebJan 3, 2024 · Precision tomographic reconstruction is critical for obtaining high-accuracy velocity measurements in tomographic particle image velocimetry. Traditional tomographic reconstruction methods, such as the multiplicative algebraic reconstruction technique (MART), can only be applied at low particle concentrations, limiting the spatial resolution … WebTomographic particle image velocimetry (Tomo-PIV) is a newly developed technique for three-component three-dimensional (3C-3D) velocity measurement based on the tomographic reconstruction of a 3D volume light intensity field from multiple two-dimensional projections. A simplification of 3D tomographic reconstruction model, which … richard dickinson nhs

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WebMay 15, 2024 · Intensity-enhanced MART for tomographic PIV HongPing Wang et al - Blob-enhanced reconstruction technique Giusy Castrillo et al - Volume reconstruction optimization for tomo-PIV algorithms applied to experimental data Fabio J W A Martins et al - This content was downloaded from IP address 207.46.13.62 on 15/05/2024 at 04:52 WebParticle image velocimetry (PIV) is an optical method of flow visualization used in education and research. It is used to obtain instantaneous velocity measurements and related properties in fluids.The fluid is seeded with tracer particles which, for sufficiently small particles, are assumed to faithfully follow the flow dynamics (the degree to which the … WebMay 21, 2024 · Furthermore, a comparison of ART and MART has revealed that the MART algorithm has better reconstruction accuracy and convergence properties, indicating that it is more suitable for Tomo-PIV reconstruction (Elsinga et al. 2006 ). The light intensity E ( Xj, Yj, Zj) of each voxel in the new k + 1th iteration is updated with the k th results, as: red lane blackjack county chain