fluctuating velocity 中文意思是什麼

fluctuating velocity 解釋
脈動流速
  1. In the process of work, according to complex geological conditions such as huge thick soft clay in site and top surface of possible pile foundation supporting course fluctuating in large amplitude, we adopted many advanced exploratory methods ( just as high accuracy exploration of shallow earthquake, crosshole wave velocity test, vane shear test, pressuremeter test, etc. ), we found out that there is an ancient groove of yangzi river in former plant site, therefore we suggested in time that plant site should properly be moved eastwardly, only this item saved nearly about 50 million for pile foundation project cost

    在工作過程,根據廠址區軟粘土厚度大、可能作為樁基持力層頂面起伏變化大等復雜地質條件,採取了多種先進的勘探手段(如高精度淺層地震勘探、跨孔波速試驗、十字板剪切試驗、旁壓試驗等) ,查明了原廠址區存在一個長江古凹槽,並及時建議廠址適當東移,僅次一項就節省樁基工程費用近5000萬元。
  2. 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。
  3. The influence of turbulence is seen as a new term in the equations. this term is the divergence of a second - order correlation tensor of the fluctuating parts of each velocity component

    湍流脈動的影響作為一個新的附加項?雷諾應力,出現在rans方程中,它是擾動速度分量二階關聯張量的散度。
  4. Under different positions of a tripping wire or speeds of the side jet, the controlled experiments were made, including the receptivity of the shear layer near jet exit to acoustic excitations, the spatial development of fluctuating velocity and the profiles of mean velocity

    在不同絆線位置或不同旁射流流速條件下,研究了射流出口臨近剪切層對聲激勵的感受性,脈動流速向下游的空間演化及平均流速剖面。
  5. According to the parameters given by chinese code and the shape coefficients obtained from wind tunnel experiments, the relationship between velocity and pressure of fluctuating wind is dervied, and the time - history of a fluctuating wind load is given

    然後根據國家規范提供的參數及風洞試驗得到的形狀系數,推導出脈動風速及風壓之間的關系,求出脈動風荷載的時程。
  6. This paper calculated the maximum mean velocity of wind and correspondences fluctuating wind continuous chart in duration of 100 years using greatest table sequence record in 10 minutes every month ( 3 ~ 5years ) in the basis of service life of the designed bridge and more probability

    本文從實際風速時程記錄開始,利用短期( 3 5年)連續的10分鐘月最大時程記錄,在一定保證率下,按照小樣本推算極值的方法,推算100年一遇的平均風速以及在此基礎上的脈動風時程。
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