PSPによる遷音速デルタ翼周り非定常流れの解明

Return to List

研究申込者

亀田正治 (東京農工大学)

Abstract

Pressure-sensitive luminescent coating on porous anodized aluminum (AA-PSP) was applied to measure non-periodic unsteady pressure distribution on a wind-tunnel model. A high-speed digital video camera was used to capture the PSP signal. The coating has a short response time of 10 μs, although it exhibits temperature and humid sensitivities. The pressure-sensitive dye was tris(4,7-diphenylphenanthroline) ruthenium(II) ([Ru(dpp)3]2+). A hydrophobic coating was applied on the anodized aluminum surface to suppress the humid sensitivity. A temperature sensitive paint was used to obtain the temperature distribution instantaneously with the pressure. The temperature data was used to correct the PSP response. An appropriate data acquisition procedure as well as digital image processing algorithm was established to compensate for the error from the temperature and humid sensitivities. The present system was applied to measure the pressure distribution on a delta wing at a high angle of attack in transonic flow, whose flow is unsteady due to the interaction between shock waves and leading edge vortices. The non-periodic unsteady pressure distribution on the delta wing was successfully measured with the sampling rate of 1 kHz and within a few percent errors in absolute pressure level.

Key words

Transonic Flow, Buffet, Delta Wing, Pressure-sensitive Paint, Unsteady Phenomena

2005年度の研究成果

Kameda, M., Tabei, T., Nakakita, K., Sakaue, H., and Asai, K. (2005) "Image measurements of unsteady pressure fluctuation by a pressure-sensitive coating on porous anodized aluminum," Measurement Science and Technology Vol. 16, No. 12, 2517-2524.

亀田正治，田部井孝聡，半谷智弘，川上崇穂，中北和之，坂上博隆，浅井圭介 (2005) "陽極酸化アルミニウム感圧コーティングによる非定常流中物体表面圧力場の画像計測," 日本機械学会論文集 B編, Vol. 71, No. 710, 2486-2493.

Kameda, M., Tabei, T., Nakakita, K., Sakaue, H., and Asai, K. (2005) "Image measurement of unsteady pressure fluctuation on a delta wing by an anodized aluminum PSP," The 21st International Congress on Instrumentations in Aerospace Simulation Facilities (Sendai, Japan).

亀田正治，田部井孝聡，半谷智弘，川上崇穂，中北和之，坂上博隆，浅井圭介 (2005), "AA-PSPによる非定常流中物体表面圧力場の画像計測," 第33回可視化情報シンポジウム (工学院大学, 東京).

利用期間

平成17年11月14日 〜 18日