Impulsive force measurement by fast response pressure-sensitive paint during shock wave passage

• DOI: 10.1007/s00193-025-01221-9
• Publication Date: 2025-03-24T06:19:40Z
• Authors: T. Ikami; J. Abe; S. Tamakuma; S. Takahashi; H. Nagai
• Keywords: Shock response spectrum

Abstract The interaction between a shock wave and an object causes impulsive force on the that lasts for very short time order of milliseconds. This study proposes measurements using anodized aluminum pressure-sensitive paint (AA-PSP), which is optical pressure measurement technique. response AA-PSP microseconds, indicating potential fast drag by integrating distribution surface. In this study, at first, fabricated measured determined to be $$3.3~\upmu \hbox {s}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>3.3</mml:mn> <mml:mspace/> <mml:mi>μ</mml:mi> <mml:mtext>s</mml:mtext> </mml:mrow> </mml:math> . A cylindrical model coated with installed outlet tube, surface in calculate resolution $$10~\upmu <mml:mn>10</mml:mn> experimental results are compared Euler CFD simulation computed in-house code. maximum numerical result exceeds result; however, timings good quantitative agreement. addition measuring force, allow visualization complex flow phenomena, such as diffraction decay strength. simultaneous field forces can deepen understanding relationship them.