狭窄下流弾性管壁に生じる局所的な振動現象における流れの拍動に伴う非定常性について

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概要

• 論文の詳細を見る

• According to previous experimental study, local vibration that forms natural mode (wave number 2) around reattachment point was observed on elastic tube wall downstream of stenosis. A peak exists in the frequency spectrum of this stationary random vibration. This peak is attributable to natural frequency of local vibration on the elastic tube, so the peak frequency depends on transmural pressure, and the power depends on Reynolds number. In biological blood flow both transmural pressure and Reynolds number are pulsatile, but flow in the tube was steady in that previous study. In this research, experimental observation was made on pulsatile flow. It was found that the vibration acts quasi-stationary random nature at least 1 Hz. And relation between the vibration and murmurs contained in Korotkov sound was a little discussed.

• 社団法人日本機械学会の論文
• 1997-12-25

著者

• 加藤 宗

  東京工業大学大学院情報理工学研究科:(現)(株)日立製作所機械研究所

関連論文

• 狭窄下流弾性管壁に生じる局所的な振動現象に関する考察
• 狭窄下流弾性管壁に生じる局所的な振動現象における流れの拍動に伴う非定常性について
• 狭窄下流弾性管壁の振動計測

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