channel-flow technique 中文意思是什麼
channel-flow technique
解釋
孔道流法-
Eight trapezoid labyrinth flow - channels are designed through modification to the cell dimension and the number of flow cells based on the parameterized structural design. integral emitter prototypes combining exterior hull and exterior flow - channel are built using rapid prototyping technique, and structural dimension of those flow - channel are measured by optical microscope, the measuring results showed that the design can completely meet the requirement of emitter accuracy
文中以參數化的設計思想，通過改變梯形迷宮流道單元尺寸和單元數設計了8種梯形迷宮流道，採用快速成形技術製作出外管與內迷宮流道一體化的滴頭原型；利用最小標注尺寸為50nm的光學顯微系統對滴頭流道結構尺寸進行了測量，分析結果顯示流道尺寸精度完全滿足滴頭的製作要求。 -
The flow equations are solved using finite difference technique. using body - fitted curvilinear coordinate system treated the boundary conditions. by iteratively solving the flow governing equation and the blade equation, the design of axial flow pump impeller in the quasi - three - dimensional rotational flow can be performed according to the angular momentum distribution, the blade which was designed in the lifting method, flow channel and the blade thickness given
其次在流動無粘性、不可壓及考慮葉片厚度的條件下，依據葉輪內的流動特性，推導了葉輪內三維流動周向平均流動控制方程以及葉片方程；在貼體坐標系中，採用有限差分法求解流動方程和葉片方程；在採用升力法設計出的葉片作為初始葉片、給定葉片速度矩分佈、葉片厚度分佈和葉輪軸面流道幾何形狀條件下，迭代求解流動控制方程及葉片方程，實現了軸流泵葉輪的準三維方法設計。 -
During the construction of concrete cut - off wall of the auxiliary dam in huangbizhuang reservoir, in the section with complex geographical condition, especially the closure section of concrete cut - off wall ( about 120m ), the deterioration of the underground water ' s flow state and the existence of the overseep channel in the stratum result in the several collapses in the dam crest. through the analysis of ever } 1 collapse ' s reason, the proposal of handling measure and its effect, the paper expounds and proves that the cut - off wall can be safely constructed and devoted into normal usage after dealing with collapse. the psper improves the construction technique and method of concrete cut - off wall especially under complex geological condition and in the overseep stratum
本文通過對歷次塌坑的原因分析及歷次塌坑處理措施的提出和對歷次塌坑處理效果的分析，論證了塌坑處理後防滲墻能安全施工和投入正常運用；完善了在復雜地質條件及強滲漏地層混凝土防滲墻的施工工藝和施工方法；提出了對病險水庫加固及在地質條件復雜地層中修建混凝土防滲墻的施工要點；同時提出了在強滲漏地層修建防滲墻的關鍵是在防滲墻施工前通過預注漿封閉強滲漏通道的重要論點；對塌坑一些處理措施中的不足之處亦進行了分析研究，供國內類似工程借鑒。 -
This work is under the project " numerical study of turbulent flow in open channel with a vegetated region ". two numerical models have been proposed and developed by using the technique of large eddy simulation ( les ). model verification and applications have been carried out subsequently
本文結合「帶有植物的河道水流紊流運動數值計算研究」項目，應用大渦模擬方法，提出了兩個河道水流紊流運動大渦模擬數值計算模型，並應用模型對帶有植物的河道水流紊流運動進行了數值模擬計算研究。
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