Ultrafast-response anodized-Aluminum pressure-sensitive paints for unsteady flow measurement

Daiju Numata; Shota Fujii; Hiroki Nagai; Keisuke Asai

doi:10.2514/1.J054886

Ultrafast-response anodized-Aluminum pressure-sensitive paints for unsteady flow measurement

Daiju Numata, Shota Fujii, Hiroki Nagai, Keisuke Asai

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

To apply pressure-sensitive paint (PSP) to unsteady shock-wave phenomena such as shock-obstacle interactions in shock-Tube experiments, anodized-Aluminum PSP (AA-PSP) with ultrafast response was fabricated and its response time to a step pressure change was evaluated by using a shock tube. Phosphoric acid was used as electrolyte in the anodization process, and the anodic alumina with pore diameter as large as 160 nm was successfully fabricated. This improved AA-PSP achieved a response with the time constant of 0.35 μs. This AA-PSP was applied to interactions of a moving shock wave with a circular cylinder. The results show that the improved AA-PSP can visualize the shock reflections and the shock diffractions with the ever-highest spatial and temporal resolution.

Original language	English
Pages (from-to)	1118-1125
Number of pages	8
Journal	AIAA journal
Volume	55
Issue number	4
DOIs	https://doi.org/10.2514/1.J054886
Publication status	Published - 2017

ASJC Scopus subject areas

Aerospace Engineering

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10.2514/1.J054886

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abstract = "To apply pressure-sensitive paint (PSP) to unsteady shock-wave phenomena such as shock-obstacle interactions in shock-Tube experiments, anodized-Aluminum PSP (AA-PSP) with ultrafast response was fabricated and its response time to a step pressure change was evaluated by using a shock tube. Phosphoric acid was used as electrolyte in the anodization process, and the anodic alumina with pore diameter as large as 160 nm was successfully fabricated. This improved AA-PSP achieved a response with the time constant of 0.35 μs. This AA-PSP was applied to interactions of a moving shock wave with a circular cylinder. The results show that the improved AA-PSP can visualize the shock reflections and the shock diffractions with the ever-highest spatial and temporal resolution.",

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T1 - Ultrafast-response anodized-Aluminum pressure-sensitive paints for unsteady flow measurement

AU - Numata, Daiju

AU - Fujii, Shota

AU - Nagai, Hiroki

AU - Asai, Keisuke

PY - 2017

Y1 - 2017

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AB - To apply pressure-sensitive paint (PSP) to unsteady shock-wave phenomena such as shock-obstacle interactions in shock-Tube experiments, anodized-Aluminum PSP (AA-PSP) with ultrafast response was fabricated and its response time to a step pressure change was evaluated by using a shock tube. Phosphoric acid was used as electrolyte in the anodization process, and the anodic alumina with pore diameter as large as 160 nm was successfully fabricated. This improved AA-PSP achieved a response with the time constant of 0.35 μs. This AA-PSP was applied to interactions of a moving shock wave with a circular cylinder. The results show that the improved AA-PSP can visualize the shock reflections and the shock diffractions with the ever-highest spatial and temporal resolution.

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Ultrafast-response anodized-Aluminum pressure-sensitive paints for unsteady flow measurement

Abstract

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