キャビテーション衝撃圧力に関する一研究 : ライン状センサ素子による観測

概要

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In order to distinguish the impulsive pressures of a microjet and a shock wave precisely, a local pressure sensor of linearly arrayed elements is manufactured. The sensor is composed of six sensor elements of 1mm×1mm in size and its sensitive area is 1mm×6mm. By the arrayed sensor and flash photographs of the cavitation bubble, the impulsive pressures of the microjet and shock wave are evaluated precisely. In the experiment, it is revealed that the microjet impinges on an area of 2mm-3mm in diameter, its impulsive pressure is in the range of about 2 MPa and its effective duration is at most 80 microseconds. It is also revealed that the effect of the shock wave is maximum at 2mm-3mm from the center of cavitation bubble, when the cavitation bubble collapses on the solid boundary.
一般社団法人日本機械学会の論文
1990-05-25