Convolutional neural networks have been successfully used in a variety of tasks and recently adapted to improve processing steps Particle-Image Velocimetry (PIV). Recurrent All-Pairs Fields Transforms (RAFT) as an optical flow estimation backbone achieve new state-of-the-art accuracy on public synthetic PIV datasets, generalize well unknown real-world experimental data, allow significantly high...

Time-resolved particle image velocimetry experiments show the generation, evolution, and dissipation of jets vortices when eel-like fish turn.

In this work, result of experimental investigation on interaction of fuel spray generated by a swirled type injector, with air motion in a prototype cylinder are presented. Experiments were carried out by planar imaging and particle image velocimetry (PIV) techniques in order to provide information about the spray structure evolution and instantaneous velocity distribution of air motion and ...

Our recent work [1] theoretically revealed that speckles can be formed when nanofluids containing a modest volume fraction of nanoparticles are illuminated by a monochromatic laser beam. This paper focuses on the key issues, including the experimental setup, the particle volume fraction of the nanofluid, the flow velocity of the nanofluid and the diameter of the pipe, in measuring the velocitie...

In the magnetic plasma fusion community and solar physics research community, different velocimetry algorithms have been used. Those are: orthogonal dynamic programing based particle image (ODP-PIV) local correlation tracking (LCT), respectively. this paper, a systematic comparison of these codes is performed using synthetically produced turbulence data. The spatial scale typical pattern scanne...

We report on the dynamics and structure of the turbulent velocity field in a high-Rayleigh-number (Ra = 5.9 x 10(8))thermal convection cell with an aspect ratio of 4. Spectral density functions (measured with laser Doppler velocimetry) indicated the existence of a large-scale periodic component. The long-time mean flow field (measured with particle image velocimetry) revealed that the large-sca...