糙率 的英文怎麼說

中文拼音 [cāolǜ]
糙率 英文
asperity
  • 糙 : 形容詞（粗糙; 不細致） rough; coarse; crude
  • 率 : 率名詞（比值） rate; ratio; proportion
  1. A test analysis of open canal bottom coefficient of roughness anticlimax on turbulent velocity of flow and intensity of turbulence influence

    明渠渠底糙率突減對紊流流速及紊動強度影響的試驗分析
  2. The report takes account into the influence of foreshore and shallow foreshore, roughness, slope, berm, wave attack angle, vertical wall and so on

    報告給出了復雜斷面上波浪爬高和越浪量的計算公式，計算中考慮了前灘、邊坡糙率、邊坡坡度、平臺、波浪入射角以及豎墻等因素的影響。
  3. It was specially pointed out that, when the tail water is constant maximum tide, the computed flood surface is higher than that of nonsteady current, so there is some safety superelevation. underestimation of the roughness will make downward bias to compute along - river surface and bring hidden trouble for flood control. to improve the section can decrease the water level or offset the water rise for increase of floodplains " roughness, but it need much engineering works

    特別提出，按照恆定流計算出來的設計水位比非恆定水位具有一定的安全儲備；而對于灘地糙率的低估又會造成設計水位的偏低，給防洪工作帶來隱患；如果利用改進斷面形式來降低水位或彌補糙率增加帶來的水位抬高，需要較大的工程量，所以平時應注意灘面的減糙管理工作。
  4. The water intake and outlet of power plant in tidal river bend is researched by model test with adopting w shaped rippled groove which meets the request of model roughness

    摘要進行了潮汐彎道段電廠取排水模型試驗，採用w形波紋凹槽方式加糙，使模型糙率達到了模型試驗的要求。
  5. Application of ebm comprehensive roughness calculation method in simulation of flood process

    綜合糙率計演算法在洪水過程模擬的應用
  6. In this paper, we study the most serious damming section of the east - one main canal, which is from the entrance of the hao wan flume ( chainage12 + 123. 6 ) to the exit of shang tian yuan tunnel ( chainage24 + 091. 1 ). the main content is analyzing the flow characteristic of the canal, setting up mathematical model of the discharge condition of the east - one main canal, according to the survey section and actual roughness factors, building, bend and so on, we divided the canal into more than loocaculation segments. each segment is calculated by microsoft excel electrical table through computer as permanent transition flow of non - prismatic channel

    本論文研究的渠段為陸渾灌區東一乾渠壅水最為嚴重的渠段，從郝灣渡槽進口（樁號12 + 123 . 6 ）至上天院隧洞出口（樁號24 + 091 . 1 ） ，其主要內容是，分析渠道水流特徵，建立東一乾渠輸水狀況的數學模型，根據測量斷面及實際糙率、建築物、彎道等因素的不同，將渠道劃分成120多個計算段，每段按非稜柱體恆定漸變流，運用microsoftexcel電子表格進行編程計算。
  7. Firstly, we account for the former made and the sand selected are reasonable by experiments. then we develop the first project carrying the experiment for filling up of 30 years. contrasted with the count, the results have no difference, we carried two experiments under different water levers by the actually facts if engineering work in early days. by the result, we know that the gross of fill up have no difference

    本文從白石水庫泥沙模型試驗入手，模型試驗首先通過模型糙率和模型選沙驗證試驗，說明模型製作和選沙是合理的；然後開展初設方案30年運用水庫淤積試驗，並與數模計算對比，基本相同；試驗結合工程初期運用實際情況，進行了兩個不同初期運用水位方案的對比試驗，從兩個方案試驗結果看，初期運用的兩個方案淤積總量差別不大，而從效益看，方案二優于方案一。
  8. Determination of roughness for open canal steady nonuniform flow during high flood

    面積法高洪糙率的確定
  9. It is different from traditional concept that the concept dynamic roughness includes influence of model error, truncation error, observation error and so on

    此時的糙率與傳統的概念有明顯的不同，它包含了模型誤差，截斷誤差，觀測誤差等各方面的綜合影響。
  10. The turbulent flow in open channel is tested with laser - doppler anemometer, in which the longitudinal time average velocity and fluctuating velocity of turbulent flow in open channel under the conditions of the sudden changes of roughnesses at different water depths are measured

    摘要通過激光測速儀，對壁面糙率突變時的明渠紊流進行試驗，測量了糙率突變不同水深情況下明渠紊流的縱向時均流速和脈動流速。
  11. The main contents are as follows : ( l ) through theoretic analysis and flume experiments, the characteristic of water resistance through frames is researched, and transforms relation between resistance coefficients and manning ' s roughness coefficients is established, and then experiential formula of manning ' s roughness coefficients is fitted

    主要研究內容如下： （ 1 ）通過理論分析和水槽試驗，研究了穿越四面體框架群水流阻力系數的變化規律，建立了阻力系數與框架群等效曼寧糙率系數的轉換關系，擬合出了糙率的經驗計算公式。
  12. The yellow river water environment information management system is a computer network system covering the whole basin, the construction of which includes a computer network construction and software development. the software involves database, gis, and man - machine interface. the investment in the system is huge and the period of construction is long, thus, a good design is very important. the design schemes are summarized in this paper. according to the present computer technology, some new methods used in network design and software development are introduced, and it is suggested that expandability and opening of the system should be considered in system construction

    黃石?水電站輸水渠道地處地質結構比較復雜的地方，由於渠道建成投運的時間較早，且原設計的標準較低，糙率較大.在電站機組已更新改造的情況下，若不進行輸水渠道挖潛改造，已難于滿足電站機組的設計流量要求.經反復比較，決定採取減小渠道糙率的方案，對輸水渠道進行三面光護面加固防滲，增加過流，效果很好
  13. With combining optimization method, an optimal model of determining synthetic surface roughness coefficient in film hole irrigation was developed

    實例計算與方法驗證表明，該方法能夠簡單而有效地確定膜孔灌溉田面綜合糙率系數。
  14. Based on water flow movement characteristics in film hole irrigation, a zero - inertia model form surface water flow movement in film hole irrigation were presented in this paper

    根據膜孔灌溉田面水流運動特性，建立了膜孔灌溉田面水流運動零慣性量數學模型，並將其與優化理論相結合，提出了確定膜孔灌溉田面綜合糙率系數的優化模型。
  15. Abstract : based on water flow movement characteristics in film hole irrigation, a zero - inertia model form surface water flow movement in film hole irrigation were presented in this paper

    文摘:根據膜孔灌溉田面水流運動特性，建立了膜孔灌溉田面水流運動零慣性量數學模型，並將其與優化理論相結合，提出了確定膜孔灌溉田面綜合糙率系數的優化模型。
  16. The 1 - d flow model is used to simulate the full - year hydraulic process in the changjiang estuary in 1998 with a desired validation by alternating the river roughness in the flood season

    本文在一維水力模型中採用洪季變動糙率的辦法，成功地模擬了長江口1998年全年水力過程，取得較好的驗證。
  17. In order to solve the problem of choice parameter on model, model parameter inverse analysis are discussed in this paper, they include one dimension river flow roughness parameter, tow dimension flow roughness parameter and side flow of one dimension river flow

    針對模型運行中遇到的參數確定問題，本文討論了模型參數反分析，包括一維河道糙率反分析，二維糙率反分析，一維河道旁側入流反分析等。
  18. One dimension river flow roughness parameter inverse analysis kalman filter is introduced into the model to solve stochastic error in observed data. applying kalman filter automatism revising system, dynamic roughness course is obtained. using dynamic roughness course the model result precision is improved, it is more consistent with observed data

    對於一維河道糙率參數反分析，針對觀測資料存在的隨機誤差，引進卡爾曼濾波器的自動校正系統，求解出河道糙率變化的動態過程，使用動態糙率計算，明顯改善模型的模擬精度，使模擬過程和觀測過程很好吻合。
  19. Based on tiansha river water diversion flow strengthen project in jiangmen, the hydraulics and water quality characteristics in tidal rive networks have been simulated numerically. zero - dimensional and one - dimensional hydraulic models have been applied. this paper presents the concept of roughness optimization

    採用零維及一維水力模型，結合江門市天沙河引水增流工程項目，對感潮河網的水力水質特性進行了數值模擬，提出河道糙率優化概念，為感潮河網的納潮沖污，改善水環境提供了理論依據。
  20. The discharge capacity decrease and the water level rise as the floodplains " roughness increase

    隨著灘地糙率的增加，灘地的過流能力降低，沿程水位隨之抬高。
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