hydraulic characteristics 中文意思是什麼

hydraulic characteristics 解釋
水力特性
  • hydraulic : adj. 1. 水力的，液力的;用水發動的。2. 液壓的，水壓的。3. 水力學的。4. 【建築】水硬的。adv. -lically
  • characteristics : 產品性能描述
  1. Abstract : with the need of idiographic project, the hydraulic characteristics of adjustive pool is thoroughly discussed. the diagnostic expressions is obtained, and is analysed

    文摘:結合工程實際，對水量調節池的水力特性進行了較深入的探討，推導出已知變進水量調節池的特徵公式，並進行了驗證和分析。
  2. In this thesis hydraulic experimental studies and theoretical analyses on the vortex - flow drop shaft were conduced and the following results were accomplished : ( 1 ) in the model test some hydraulic characteristics including the shape of air core in the center of the drop shaft, the radial distribution of water flow velocity and the distribution of pressure on the wall of the drop shaft were measured under the condition of high water head above 250m and large discharge above 1400m3 / s. ( 2 ) a kind of computational method for the spiral water flow in the air core region of drop shaft was discussed and applied and the results agree the experimental data well. ( 3 ) the total ratio of energy dissipation in the drop shaft can reach 90 % and the energy dissipation in every region was discussed quantitatively

    本文通過試驗研究與理論分析對旋流式豎井泄洪洞應用於高水頭、大泄流量情況時存在的一些水力學問題進行了研究和探討，取得以下主要成果：一、結合小灣工程導流洞改建，對高水頭（ 252m ） 、大泄流量（ 1400m ~ 3 s ）條件下旋流式豎井中的水流運動特徵進行了比較全面的測量，包括空腔形態、徑向流速分佈及井壁壓強等；二、提出了豎井空腔段螺旋水流水力計算方法，其計算結果與實測值吻合良好；三、利用試驗與計算結果，對旋流式豎井的消能機理進行了探討，對豎井各部分的消能能力有了總體認識；四、對豎井下部消力井的合理井深進行了優化試驗研究，發現消力井合理深度為0 . 9d左右；五、通過試驗研究，歸納出豎井水流總摻氣量估算方法，為導流洞排氣方案的設計提供了參考依據；六、在高水頭、大流量條件下，豎井空腔段下部流速很高，盡管水流螺旋運動引起的離心力可以確保井壁壓強保持正壓，但空化數依然較低，因此豎井的空化空蝕始終是工程界關注的重大問題。
  3. To provide necessary data for design bypass pipe, an enlargement to bi liu river reservoir, the following problems have been studied by hydraulic model and theoretical analysis : the energy losses in water head of the bypass pipe system and of the flow - control valve and their scale effects, measurement and calculation of the discharge of the bypass pipe system during the bypass pipe system operation with and without the new water power station, the hydraulic characteristics of the water tunnel and draw - off pipe, the flow rate of the aqueduct bridge and the draw - off pipe and the water elevation of the flow in the aqueduct bridge during the old water power station operation with and without the new water power station

    大連市碧流河水庫供水工程取水頭部由引水渡槽、節制閘、進水閘、泄水閘等建築物組成。由於本工程場地條件限制，增設旁通管后布置非常緊湊，管道急轉角度大且轉彎距離較小，對于管內水流流態是否滿足要求，需要經過模型試驗進行論證，以確保工程的可靠性。旁通管具有上水與泄水要求，對其過流能力也要經試驗確定，為碧流河水庫增建旁通管設計提供依據。
  4. The conclusions from the paper were valuable in improving hydraulic characteristics of the urban drainage pumping station with side - inlet sump

    研究成果對改善側向進水城市排水泵站水力特性、提高該類泵站的安全可靠性與高效經濟性具有較好的指導意義與實用價值。
  5. For parameter a, there is a close relationship exist between a ( 9, sr ) in two different radar incident angle that can be expressed as : with considering the effects of soil texture, we get the final expression of the inversion model : where mv ( t1 ), mv ( t2 ) is volumetric soil moisture content in two different temp, c, d is soil type related parameters, and v ( t1 ), s ( t2 ) is coresponding bare soil radar backscattering coefficients. inversion results show that for the c band hh polarized radarsat scansar data with a range of incidence angle from 20 to 40, the soil moisture change value can be derived with an acceptable accuracy using the above model. the temporal and spatial soil moisture change patterns are associated with rainfall and vegetation cover, as well as the soil hydraulic characteristics

    利用最新發展的電磁波散射模型研究了不同植被覆蓋地表雷達波對地表土壤水分的敏感性，建立了半經驗植被雷達後向散射模型; 2 ） .研究發現在農作物等矮小植被覆蓋地表，植被層直接後向散射與植被類型相關，且在植被生長期，雷達後向散射系數對植被含水量的敏感性要高於對植被高度變化的敏感性; 3 ） .解決了單參數雷達地表土壤水分反演問題中，雷達入射角和地表粗糙度的影響這一難點問題; 4 ） .利用土壤介電模型校正了不同土壤類型對反演地表土壤體積含水量的影響; 5 ） .在以上成果基礎上，建立了完整的單參數雷達地表土壤水分變化探測反演演算法，經地表驗證，模型反演地表土壤水分變化值的精度為rmse = 0
  6. The main factors which affect the hydraulic characteristics of mhsj are studied by the model test

    利用水工模型試驗，研究了影響其水力特性的主要因素。
  7. Two kinds of technical approaches, the approach of the distribute - holes and the approach of the launder, were pointed to improve hydraulic characteristics of side - inlet sump in the paper

    本文提出了改善側向進水集水池水力特性的兩種技術方案，即配水孔方案與流槽式配水方案。
  8. Three mathematical models are presented to express the characteristics based on the systematical analysis of mechanical, hydraulic and fluid dynamic characteristics during three transient process, and numerical calculation methods are carried out to the three mathematical models. with the rigid water hummer theory and hydraulic characteristics, this paper has improved the boundary condition equation at pump during the suspending period, and drew a simplified mathematical model

    針對大型低揚程泵站過渡過程的具體特點，利用剛性水錘理論，對事故停泵時泵處的邊界條件方程進行改進，並結合泵裝置水力特性，得出大型低揚程泵站停泵過渡過程簡易計算方法的數學模型；針對具體數學模型編製程序進行計算求解。
  9. Numerical analysis for hydraulic characteristics of marine propeller under reverse bent and twist

    船舶反彎扭螺旋槳水力特性的數值模擬與分析
  10. In order to examine the influence of soil hydraulic characteristics on land surface process, the four soil hydraulic models are coupled with the simplified simple biosphere model ( ssib ) respectively and the simulated net radiation, sensible heat, latent heat and soil heat fluxes by the four coupled model are compared

    利用ssib模式研究了不同的土壤水力模式對陸面過程模式模擬結果的影響。利用ssib mm5耦合模式研究了在陸面過程模式中土壤水力傳導率等計算上的差異對大氣模式模擬結果的可能影響。
  11. The model adopts the relation of the distance from initial point and the elevation, which not only makes the model more applicable in practical engineering but also improves the accuracy of cross - sectional hydraulic characteristics

    根據工程所提供的起點距高程方法進行程序設計，與工程實際結合更為緊密，而且提高了斷面水力特徵描述的精確度。
  12. As an inlet structure, the forbay is an important part of the pumping station. the pressurized forbay, close in top structure, is a kind of particular forbay in which water is pressurized. based on the integral hydraulic model test of shanghai changqiao waterwork ' s water - transport pumping station, some research on the hydraulic characteristics of the pressurized forbay has been done in the paper. the main content is listed as follows : l. the hydraulic characteristics of the pressurized forbay in different water supply combination and different pump unit combination without divertion measure, and the reason of the poor flow state. 2. the hydraulic characteristics of the pressurized forbay with diversion pier, and the reason why the flow state can be improved. 3. the experimental research on the critical air suction condition of the pressurized forbay

    本文基於上海長橋自來水廠改造工程送水泵站整體水力模型試驗，對有壓前池的水力特性進行了研究，研究的主要內容如下： 1 、無導流措施的有壓前池在不同供水組合及不同機組開機組合條件下的水力特性，並分析了流態較差的原因； 2 、加設導流墩後有壓前池的水力特性，以及加設導流墩流態改善的原因; 3 、有壓前池進氣臨界條件的試驗研究； 4 、水泵進氣以後水泵性能的討論。
  13. Based on the 3 - d numerical simulation and the model test, many factors affecting the flow pattern stability and the hydraulic characteristics of the horizontal submerged jets are studied

    摘要採用數值模擬和模型試驗相結合的方法，分析了水股分層、坎高、出口體型和跌坎形式等因素對多股水平淹沒射流的流態穩定性和水力特性的影響。
  14. For each approach, a much more thorough study was made on the hydraulic characteristics of the side - inlet sump by the hydraulic model test and the numerical simulation

    對每一種技術方案，應用數值模擬試驗與水力物理模型試驗相結合的研究方法，全面細致地研究了側向進水集水池的水力特性。
  15. These divergences exert the influence on simulated results of land surface model by influencing soil hydraulic characteristics. ( 2 ) the performance of land surface model is sensitive to the choice of soil hydraulic models

    在ssib模式中利用bc 、 ch和vg三個土壤水力模式模擬的土壤濕度與觀測結果比較吻合，利用bw模式得到的土壤濕度模擬值比實測值小。
  16. Abstract : the effective width model based on the surface topography of natural fracture, which is closely related to the mechanical and hydraulic characteristics, is established on the theories of fluid mechanics and oil / gas flow in porous media. the study aims at improvingformation damage control and temporary plugging technology for fractured reservoir

    文摘:在考慮裂縫表面的實際微觀形態的情況下，採用流體力學與滲流力學相結合的方法，提出了可為裂縫性儲層保護實施暫堵技術提供定量依據的有效寬度數學模型。
  17. The spillway tunnel at xiluodu hydropower station has the characteristics of large discharge and high flow velocity, for which the hydraulic characteristics of the emergency gate and the dynamic properties of gate structure during shutting down under hydrodynamic condition are directly related to the technical feasibility and the safety reliability of the spillway tunnel operation

    摘要溪洛渡水電站泄洪洞具有泄量大、流速高等特點，事故閘門動水下門過程中的水力學特性以及門體結構的動力性能直接關繫到泄洪洞運行的技術可行性和安全可靠性。
  18. The research shows that the variation of hydrological and hydraulic characteristics directly causes the variation of eco - environmental elements, and finally leads to the ecological stress on river ecological system

    研究結果表明，水文水力特徵的變化直接導致了生態環境要素的變化，最終將對河流生態系統產生脅迫。
  19. The influence of the area contraction ratio of rotary flow generator on the hydraulic characteristics of level rotary flow has been investigated by the hydraulic model test of an internal energy dissipation tunnel

    摘要通過模型試驗，研究了起旋器出口面積收縮率對水平旋流泄洪洞水力特性的影響。
  20. Based on the head loss coefficients obtained from gardel ' s semi - empirical equations for t - junction flow and experiment of welded t - junction, the hydraulic characteristics of throttled surge tank are estimated and compared with those gotten from hydraulic experiment. 3. four different methods of determining the head loss coefficients of throttled surge tank have been employed to investigate the effect of methods afore mentioned on the accuracy of calculating surge and pressure head of throttled surge tank

    給出了基於gardel關於三通管水頭損失系數的經驗公式、焊接t形三通管水頭損失系數的實驗資料及截面突變管道的水頭損失資料，計算有連接管的阻抗式調壓室在不同流態下水頭損失系數的計算方法，並將這兩種方法計算得到的調壓室局部水頭損失系數分別與模型試驗成果進行了比較和分析； 3
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