A discusion of spatial resolution of pressure-sensitive paint

Yu Matsuda*, Hiroki Yamaguchi, Yasuhiro Egami, Tomohide Niimi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Pressure-sensitive paint (PSP) is a useful measurement technique to non-intrusively obtain a pressure distribution on a surface. Recently, PSP has been applied to micro gas flow measurements; thus the spatial resolution of PSP measurement is very important to assess the measured pressure. However, the spatial resolution has not been discussed except by Moshasrov et al. (1997). They evaluated the spatial resolution corresponds to a pressure jump on a PSP surface with consideration of an oxygen concentration distribution in a PSP layer. In this study, we have discussed the spatial resolution by numerically solving the two-dimensional diffuse equation with pressure slope as a boundary condition on a surface of PSP. The result with pressure jump, as a limiting case of pressure slope, showed good agreement with the result reported by Moshasrov et al. (1997). Moreover, it is theoretically clarified that the pressure variation with a spatial distance of lager than 8.5 times of the thickness of PSP can be completely measured by PSP without the effect of oxygen diffusion in a PSP layer.

Original languageEnglish
Pages (from-to)1260-1266
Number of pages7
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Issue number790
Publication statusPublished - 2012
Externally publishedYes


  • Pressure Measurements
  • Pressure-Sensitive Paint
  • Spatial Resolution

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering


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