negative lift 中文意思是什麼
negative lift
解釋
負升力-
Unsteady separated flow, produced during the gate - opening period in the reverse radial gate tunnel of a high - lift shiplock, is characterized by negative pressure and high velocity as well as their intense fluctuations in space and time and could easily result in various harmful phenomena such as cavitation, gate vibration and sonic boom, which have been observed and confirmed by prototype and physical model tests
高水頭船閘輸水反弧閥門開啟過程中，后廊道內發生急變分離流，負壓、高速水流以及壓力與流速的劇烈時空脈動變化容易誘發空化空蝕、門振和聲震等有害現象已被原型觀測和物理模型試驗研究證實。 -
Abstract : the work mechanism, application conditions and methods of the technique for freeing stuck pipes using negative pressure gas lift are introduced in this paper. its attentions are summarized according to its applications in pan 2 - xie 171 well. the technique is useful for future disposing adherence stuck pipe accidents
文摘:介紹了氣舉負壓解卡技術的原理、適用條件及方法，通過盤2 -斜171井的現場實踐，初步總結了應用氣舉負壓解卡技術時應注意的事項，對今後處理粘附卡鉆事故有一定的借鑒意義。
分享友人