Position Measurement of Moving Shock Wave by a Line Scan Camera

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  • 235 ラインスキャンカメラによる衝撃波位置計測
  • ライン スキャン カメラ ニヨル ショウゲキハ イチ ケイソク

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Abstract

A system to measure positions of the shock wave fluctuating with high frequency was reevaluated. This system consists of a schlieren optical system and a line scan camera, and a data acquisition and processing computer. The previous line scan camera has been replaced by new one which can be operated at high frequency. The shock position was determined by shock position recognition processing. The unsteady shock waves occurring in the flow passage of a two-dimensional cascade were measured using this system. The results show that this system can effectively measure the unsteady shock position moving at higher velocity than the previous one. However, more creative techniques are required for the measurement and the recognition of multiple shock waves.

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