turbulent regime 中文意思是什麼
turbulent regime
解釋
紊鏈態-
It is studied that the formation mechanism of taylor bubble and its control method in gas - liquid two - phase flow, which affects the pressure balance and mechanical driving efficiency in the flow of petroleum engineering. experiments show that the formation of taylor bubble in gas - liquid two - phase flow is due to the intensive congregation and amalgamation of small bubbles driven by void fraction waves and that the highly turbulent flow is able to restrain this formation. thus, the flow regime transition may be checked by increasing the flow turbulence and controlling the disturbed frequency
對大管徑氣-液兩相流動中嚴重影響壓力平衡與機械驅動效率的段塞流生成機制和控制方法進行了研究，實驗證明段塞流的形成是由於空隙率波的大幅度增長使氣泡高度集中，並形成聚並所致。強湍流運動可以抑制taylor泡的形成。因此，通過強化湍流或控制擾動頻率可以對氣泡聚並起明顯的抑制作用。 -
For this regime, the heat transfer is usually predicted by the linear interpolation or extrapolation of the results of turbulent and / or laminar regimes, associated with great uncertainty in the evaluation of the performance of heat transfer
現階段人們在實際計算中，往往採用線性內插法或延伸湍流區和層流區傳熱曲線的方法，從而使結果存在很大的不確定性。 -
The result showed that the hurst exponent of the signal have obvious differences between different flow regime. it increased when flow regime was changed from fixed bed to bubbling bed and more from bubbling bed to turbulent, based on which a new method for identification of flow regime was proposed. to improve the accuracies of identification fuzzy technology was introduced
為了提高辨識準確率，引入了模糊信息處理技術，提出了流型模糊辨識中隸屬度函數的確定辦法，建立了氣固流化床從固定床、鼓泡床到湍動床的流型判別準則，實驗驗證了該方法有良好的辨識效果，辨識準確率在80以上。 -
Pressure discharge relation of the simple orifice is exponential in air and soil. the flow regime of simple emitter is situated between laminar and turbulent
簡易地下滴灌灌水器流量壓力關系在空氣和土壤介質中都呈現較好的冪函數關系，其流態介於層流和紊流之間。 -
Gas - liquid two - phase flow ; void fraction wave ; turbulent flow ; flow regime ; control
氣-液兩相流空隙率波湍流運動流型控制 -
In the laminar flow regime, a analytical mathematical model is obtained by analyzing the film flowing in the wavy wall tube. in the turbulent flow regime, mathematical model almost ca n ' t be obtained directly because the turbulent flow in wavy wall tube is very complex, the model is obtained by quoting some results which are theorized by other studiers. in the part of experimental study, the flow form in the wavy wall tube is observed by transparent quartz glass wavy wall tube apparatus, the evaporation experiments are carried out in a 3 meters steel wavy wall tube, using glucose as the medium, heat transfer is invested, the heat transfer correlations of wavy wall tube evaporator are obtained
數學模型的建立過程中，對于液膜層流流動，直接對波形管內的降落液膜進行理論分析，得出液膜層流流動下數學模型的解析式；對于液膜湍流流動，由於湍流流動的復雜性，再加上所採用的波形管對湍流流動的影響，直接對降落液膜進行理論分析建立數學模型是極其復雜的，通過採用以前一些研究者得到的理論分析與實驗結果，並引入與波形管的形狀特徵參數有關的修正系數k ，建立液膜在湍流流動下的數學模型。
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