cavitation condition 中文意思是什麼

cavitation condition 解釋
空化狀態
  • cavitation : n. 1. 【航空】氣穴現象；氣渦現象。2. 【物理學】成穴；空化，（超聲波的）空穴作用；【醫學】成洞，成腔。
  • condition : n 1 狀態，狀況，情形；品質。2 〈pl 〉外界狀況，周圍情形。3 地位，身分。4 條件；【語法】條件子句。...
  1. The additional flow is formed by the device of dentoid baffle, and the application of the device of dentoid baffle cooperated with a stilling basin has been investigated by systematic model tests. based on the research results, the hydraulic problems such as the characteristics of hydrodynamic pressure and cavitation on the head of the denotid baffle, the properties of flow under the condition that the device of denotid baffle is used with a stilling basin, the hydraulic computation about a stilling basin, the estimation of energy dissipation and its various affection factors, the mechanism and effect of energy dissipation, and distributions of velocity and pressure and aerating concentration, etc, have been analyzed ; the method and step of hydraulic design of device of denotid baffle by which the additional flow is produced has also been proposed

    文中利用齒墩設施實現附加射流，對齒墩設施與消力池聯合應用進行了大量的和系統的模型試驗，分析研究了中低佛勞德數條件下，齒墩墩頭的動水壓強及空化特性，齒墩設施與消力池聯合應用時的流態特性，消力池的水力計算，消能量的估算及其各種影響因素，消能機理和效果，消力池內的流速、壓強特性，摻氣濃度分佈等水力學問題，並提出了實現附加射流齒墩設施的水力設計方法和步驟。
  2. Under this condition, this thesis offers a study on cavitation characteristics caused by two main accidental conditions : power off and system fluid off

    本文即是針對動力失靈和系統斷流兩種主要事故工況下，所引起的動力系統中空穴的特性作以研究。
  3. A comparison of the flows with different gate - opening rates shows the causes that opening the gate at a higher rate is favorable to the reduction of cavitation, gate vibration as well as the gate load fluctuation. in addition, a study has been made to show the influence of the high - speed jet flow coming downward from the narrow gate gap on the flow condition in the tunnel downstream to the gate

    通過分析比較不同閥門開啟速率對流動特性的影響，闡明了快速開啟閥門不僅有利於減少空化空蝕也有利於減小弧門振動和啟門力的脈動，此外，研究了門楣處狹窄縫隙高速射流對門后流態、壓力脈動和弧門受力等方面的影響。
  4. The unknown source strength of cavitation is always arranged on the propeller blade surface in the solving process, but the integration is carried out along the cavity surface of last iterative step when the strength of cavitation dipole is determined according to dynamic condition

    求解過程中待求的空泡源強始終布置在槳葉表面上，而在根據動力學條件求解每一步的空泡麵元偶極子強度時，積分是沿著上一步迭代確定的空泡表面進行的。
  5. Abstract : according to the cause and the damage of the feed water pump cavitation resulting from the turbine ' s load rejection, this paper analyzes the condition about presenting cavitation by calculating the largest difference of the pump inlet ' s cavitation residue in the transient process of the deacrator and proposes the measures about presenting cavitation

    文摘:根據汽機甩負荷造成給水泵汽蝕的原因及危害，從計算除氧器暫態過程中給水泵入口汽蝕余量的最大降落值入手，分析防止給水泵汽蝕的條件，提出預防措施。
  6. At same time, author suggests to change cavitation factor to important operation condition during pressure fluctuation test so to avoid producing the phenomenon of cavitation stimulus in the prototype operation

    同時，建議針對水輪機的重要運行工況，增加不同空化系數下的壓力脈動試驗，以避免在真機運行時可能產生「空化自激」現象，確保原型機組的安全運行。
  7. Until now, there have been a few reports on the damage of the water pumps caused by sand and water cavitation. by use of the test loop for solid and liquid two phases, under the condition of 3 % head drop, the damage location and relative degree of the sand and water cavitaiton occurred on the impeller were tested and researched. the result was, them, compared with the results under the condition that water cavitation occurred and no cavitation but only wear occurred. the differencts were analyzed. the analysis result can be used as the basis of the further research and the improvement of the impeller shape

    目前含沙水汽蝕對水泵損傷方面的報導甚少，本文利用固液兩相流試驗臺，對離心泵閉式葉輪在含沙水汽蝕時（ 3揚程下降點）的損傷部位和相對程度進行了試驗研究，並將此結果與清水介質發生汽蝕時的損傷情況[ 13 ]及含沙水無汽蝕情況下的磨損情況[ 7 ]相比較，對其差異進行了分析，為今後進一步探討葉輪損傷機理和葉型改進提供了實驗依據。
  8. The definitions and the conditions of cavitation erosion and flash vaporization have been discussed in detail ; the paper also shows examples of different definitions in different books, which cause the complexity of calculating discharge factor and the damage to control valve ; suggests relevant measures to avoid the damage in real working condition

    摘要對氣蝕和閃蒸的定義、產生的條件進行了詳細論述，以規范不同版本書籍在概念上的模糊不清，以及由此造成的調節閥流量系數計算的復雜性和對調節閥的損害，以便採取相應措施，在實際工況條件下加以避免。
  9. According to the cause and the damage of the feed water pump cavitation resulting from the turbine ' s load rejection, this paper analyzes the condition about presenting cavitation by calculating the largest difference of the pump inlet ' s cavitation residue in the transient process of the deacrator and proposes the measures about presenting cavitation

    摘要根據汽機甩負荷造成給水泵汽蝕的原因及危害，從計算除氧器暫態過程中給水泵入口汽蝕余量的最大降落值入手，分析防止給水泵汽蝕的條件，提出預防措施。
  10. ( 2 ) retrofitted the small turbine of tai pin shao hydropower station in this paper. the results indicated that given the unchanged channels of the original runner hl240 - lj - 120 and satisfied cavitation condition and stability requirement, the electricity generated by the turbine generator increased from 3000kw to 3600kw when the design head was 36. 2m, which arrived at the expectant objective

    （ 2 ）對太平哨電廠的小機進行了改造，在不改變原hl240 - lj - 120流道並滿足氣蝕和穩定性要求，在設計水頭為36 . 2米時，水輪機發電機出力由原來的3000千瓦增容到3600萬千瓦，達到了預期目標。
  11. The analysis results indicate that the transient performance of pump during starting period decreases evidently under cavitation condition ; cavitation performance of the pump has close relationship with flowrate, rotational speed and impeller parameters

    分析結果表明，啟動過程中的汽蝕現象使混流泵瞬態性能迅速下降，汽蝕性能與流量、轉速、葉輪參數等有密切關系。
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