jet scour 中文意思是什麼
jet scour
解釋
挑流沖刷-
For a single plunging jet, two optimization models are respectively introduced according to the jet trajectory distance and the depth of scour pool, and the optimal computation of the jet trajectory distance in xiao - wan project demonstrates that these models are reasonable ; 5
對于單股挑流消能水舌，以挑距和沖坑深度為控制目標，分別首次建立了優化數學模型，並通過對小灣拱壩單孔挑流水舌的計算，說明所提出的數學優化模型是可用的； 5 -
The ratio of the length to the depth of scour hole decreases with the increasing scour depth, in spite of the reason is the increase of the air concentration, the decrease of the jet velocity or the decrease of the jet thickness. 5. governing equations of the aerated jet flow are established
摻氣對沖坑形態並沒有實質性的影響，沖坑的寬深比隨沖坑深度的減小而增大，無論造成沖坑深度減小的原因四） 1大學i學博士學位論文是摻氣、降低流速還是減小入射水舌厚度，其變化規律都可用相同的直線關系表示。 -
The existing results about scour hole was summarized. experiments was made about the influence of aeration on scour, the dynamic pressure on the original riverbed and the scouring hole bottom, and the influence of aeration on the dynamic pressure and the velocity of submerged jet. scour was simulated by numerical model
在總結前人研究成果的基礎上，試驗研究了摻氣對基巖沖刷破壞的影響；基巖沖刷過程中沖坑底部脈動壓強隨沖坑深度的增加而變化的特性；摻氣對沖坑未形成前河床底部及基巖沖刷坑底部脈動壓強的影響；摻氣對射流軸線流速變化的影響等。 -
Experiments about the influence of aeration on the velocity of the submerged jet was made. it has been proved that the main reason of the influence of aeration on scour is the more rapid decrease of the velocity of the submerged velocity. 6
對基巖的沖刷進行了數值模擬，選取臨近底部的結點處的壓強（壓力水頭值）與結點處水深的差值，再與結點處垂直於底面方向的速度分量的0
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