蒸気加減弁に生じる遷音速流れの振動と下流配管内に生じる圧力変動に関する研究(流体工学,流体機械)

概要

論文の詳細を見る
A steam control valve is used to control a steam flow from a steam generator to a turbine in power plants. The flow field in the steam control valve is usually transonic and complex. A flowinduced vibration can occur in the valve and its downstream pipe. Such vibrations may cause an unexpected shutdown of the power plant. An experimental and numerical study has been conducted to clarify the characteristics of the vibration. The amplitude of the pressure fluctuation in the pipe has been influenced by the flow fluctuation near the valve. Additionally, it has been found that the amplitude of pressure fluctuation in pipe can be reduced by increasing a pipe cross section area downstream of the valve.
2008-02-25