Abstract
Rainbow particle tracking velocimetry can be used to measure 3D3C flow velocity vectors with a single color camera. The particle depth position is calculated from the hue degree of a particle color. A liquid–crystal display (LCD) projector can be used conveniently as a light source of the color pattern in place of the spectral diffraction of white light. Another advantage of using an LCD projector is the ability to change the RGB components of the color pattern. In this study, the rainbow color pattern was modified to increase available color. Colors with the same hue degree but different saturations were used in the color pattern. Using color space enhanced positional resolution in the color change direction. The parameters of new color patterns were number of cycles, saturation continuity and range of color space. They were designed and their performances were compared. The effective resolution in color change direction enhanced 2.4 times from original patten (single cycle rainbow), and velocity vector acquisition rate improved, in particular, for the range of small amount movement per step.
Graphical abstract
Similar content being viewed by others
Data availability
Not applicable.
References
Barnkob R, Rossi M (2020) General defocusing particle tracking: fundamentals and uncertainty assessment. Exp Fluids 61:1–14
Burgmann S, Brücker C, Schröder W (2006) Scanning PIV measurements of a laminar separation bubble. Exp Fluids 41:319–326
Casey TA, Sakakibara J, Thoroddsen ST (2013) Scanning tomographic particle image velocimetry applied to a turbulent jet. Phys Fluids. https://doi.org/10.1063/1.4790640
Discetti S, Coletti F (2018) Volumetric velocimetry for fluid flows. Meas Sci Technol 29:042001
Elsinga GE, Scarano F, Wieneke B, Van Oudheusden BW (2006) Tomographic particle image velocimetry. Exp Fluids 41:933–947
Fuchs T, Hain R, Kähler CJ (2017) Non-iterative double-frame 2D/3D particle tracking velocimetry. Exp Fluids 58:1–5
Godbersen P, Bosbach J, Schanz D, Schröder A (2021) Beauty of turbulent convection: a particle tracking endeavor. Phys Review Fluids 6:4–7
Hori T, Sakakibara J (2004) High-speed scanning stereoscopic PIV for 3D vorticity measurement in liquids. Meas Sci Technol 15:1067–1078
Maas HG, Gruen A, Papantoniou D (1993) Particle tracking velocimetry in three-dimensional flows—part 1. Photogrammetric determination of particle coordinates. Exp Fluids 15:133–146
Malik NA, Dracos T, Papantoniou DA (1993) Particle tracking velocimetry in three-dimensional flows. Exp Fluids 15–15:279–294
McGregor TJ, Spence DJ, Coutts DW (2007) Laser-based volumetric colour-coded three-dimensional particle velocimetry. Opt Lasers Eng 45:882–889
McPhail MJ, Fontaine AA, Krane MH et al (2015) Correcting for color crosstalk and chromatic aberration in multicolor particle shadow velocimetry. Meas Sci Technol 26:025302
Murai Y, Yumoto T, Park HJ, Tasaka Y (2021) Color-coded smoke PIV for wind tunnel experiments improved by eliminating optical and digital color contamination. Exp Fluids 62:1–17
Noto D, Tasaka Y, Murai Y (2021) In situ color-to-depth calibration: toward practical three-dimensional color particle tracking velocimetry. Exp Fluids 62:1–13
Noto D, Tasaka Y, Murai Y (2023) Low-cost 3D color particle tracking velocimetry: application to thermal turbulence in water. Exp Fluids 64:92
Park HJ, Saito D, Tasaka Y, Murai Y (2019) Color-coded visualization of microbubble clouds interacting with eddies in a spatially developing turbulent boundary layer. Exp Therm Fluid Sci 109:109919
Park HJ, Yamagishi S, Osuka S et al (2021) Development of multi-cycle rainbow particle tracking velocimetry improved by particle defocusing technique and an example of its application on twisted Savonius turbine. Exp Fluids 62:71
Pick S, Lehmann FO (2009) Stereoscopic PIV on multiple color-coded light sheets and its application to axial flow in flapping robotic insect wings. Exp Fluids 47:1009–1023
Prasad AK (2000) Stereoscopic particle image velocimetry. Exp Fluids 29:103–116
Ruck B (2011) Colour-coded tomography in fluid mechanics. Opt Laser Technol 43:375–380
Salazar JPLC, De Jong J, Cao L et al (2008) Experimental and numerical investigation of inertial particle clustering in isotropic turbulence. J Fluid Mech 600:245–256
Schanz D, Gesemann S, Schröder A (2016) Shake-The-Box: Lagrangian particle tracking at high particle image densities. Exp Fluids 57:1–27
Sheng J, Malkiel E, Katz J (2008) Using digital holographic microscopy for simultaneous measurements of 3D near wall velocity and wall shear stress in a turbulent boundary layer. Exp Fluids 45:1023–1035
Tien WH, Dabiri D, Hove JR (2014) Color-coded three-dimensional micro particle tracking velocimetry and application to micro backward-facing step flows. Exp Fluids. https://doi.org/10.1007/s00348-014-1684-x
Watamura T, Tasaka Y, Murai Y (2013) LCD-projector-based 3D color PTV. Exp Therm Fluid Sci 47:68–80
Xiong J, Idoughi R, Aguirre-Pablo AA et al (2017) Rainbow particle imaging velocimetry for dense 3D fluid velocity imaging. ACM Trans Graph. DOI 10(1145/3072959):3073662
Acknowledgements
Mark R. Kurban from Edanz (https://www.jp.edanz.com/ac) edited a draft of this paper.
Funding
Not applicable.
Author information
Authors and Affiliations
Contributions
Mao Takeyama: Conceptualization, Methodology, Investigation, Writing- Original draft preparation. Hitoshi Suto: Writing—Reviewing and Editing. Yasuo Hattori: Supervision, Writing—Reviewing and Editing.
Corresponding author
Ethics declarations
Conflict of interest
Not applicable.
Ethical approval
Not applicable.
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
About this article
Cite this article
Takeyama, M., Suto, H. & Hattori, Y. 3D3C rainbow particle tracking velocimetry: improving depth resolution and velocity vector acquisition rate by using color space for a multi-cycle rainbow pattern. J Vis (2024). https://doi.org/10.1007/s12650-024-01020-x
Received:
Revised:
Accepted:
Published:
DOI: https://doi.org/10.1007/s12650-024-01020-x