@inproceedings{oai:jaxa.repo.nii.ac.jp:00004016, author = {三井, 克仁 and 中野, 葵 and 小池, 俊輔 and 半田, 太郎 and Mii, Katsuhito and Nakano, Aoi and Koike, Shunsuke and Handa, Taro}, book = {宇宙航空研究開発機構特別資料: 第45回流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム2013論文集, JAXA Special Publication}, month = {Mar}, note = {第45回流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム2013 (2013年7月4日-5日. タワーホール船堀), 東京, 45th Fluid Dynamics Conference / Aerospace Numerical Simulation Symposium 2013 (July 4-5, 2013. Tower Hall Funabori), Tokyo, Japan, Particle image velocimetry (PIV) has become a powerful tool for the measurements of flow velocities in wind tunnel testing. However, it is generally difficult to apply the PIV to a supersonic flow because of unreliable particle traceability. In the present study, the method for correcting the PIV data measured in a supersonic flow is discussed. The tested flow is an underexpanded jet issuing from an orifice, the diameter of which is 6.0 mm. The jet has a region in which the gas is accelerated in a short distance (11 mm) from a sonic speed to a supersonic speed corresponding to Mach 3.7. The jet also has a normal shock wave called Mach disk across which the gas is decelerated rapidly from a supersonic speed to a subsonic speed. The PIV data is corrected by using the Basset-Boussinesq-Oseen (BBO) equation based on the assumption that the Stokes’ law is satisfied. The corrected PIV data is compared with the data measured by the molecular tagging velocimetry (MTV). The PIV data are reasonably improved in the entire measurement region. Especially, the corrected PIV data agree well with the MTV data downstream of the Mach disk., 形態: カラー図版あり, Physical characteristics: Original contains color illustrations, 資料番号: AA0062268016, レポート番号: JAXA-SP-13-011}, pages = {89--94}, publisher = {宇宙航空研究開発機構(JAXA), Japan Aerospace Exploration Agency (JAXA)}, title = {超音速領域におけるPIV 計測データの補正方法に関する研究: MTV データとの比較}, volume = {JAXA-SP-13-011}, year = {2014} }