流動穩定性 的英文怎麼說
中文拼音 [liúdòngwěndìngxìng]
流動穩定性
英文
flow stability- 流 : Ⅰ動1 (液體移動; 流動) flow 2 (移動不定) drift; move; wander 3 (流傳; 傳播) spread 4 (向壞...
- 穩 : 形容詞1 (穩定; 穩當) steady; stable; firm 2 (穩重) steady; staid; sedate 3 (穩妥) sure; rel...
- 定 : Ⅰ形容詞1 (平靜; 穩定) calm; stable 2 (已經確定的; 不改變的) fixed; settled; established Ⅱ動詞...
- 性 : Ⅰ名詞1 (性格) nature; character; disposition 2 (性能; 性質) property; quality 3 (性別) sex ...
- 流動 : 1. (液體或氣體移動) flow; run; circulate 2. (經常變換位置) going from place to place; on the move; mobile
- 穩定性 : antiwhip
- 穩定 : 1 (使穩定) stabilize; steady 2 (穩固安定) stable; steady 3 (物質的性能不易改變的作用) stabi...
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In a word, convective instability strong baxoclinicity barotropic advection of potential vorticity and latent heat release are factors which activize this explosive development of cyclone
總之,對流不穩定、強斜壓性和正壓位渦平流、潛熱釋放是本次氣旋發展的啟動因子。Studies of nonparallel stability of boundary layer
邊界層流動的非平行穩定性研究To determine which exchange-rate system offers the most stability in the face of such capital flow shocks, let us take the case of sudden capital flight from the country.
為了確定哪一種匯率制度在面臨這種資本流動沖擊時具有最大的穩定性,讓我們以資本突然從這個國家外逃為例。Gross flow instabilities are damped and remain small.
總體流動的不穩定性受到阻抑並且很小。Conclusions. dex increased perioperative haemodynamic stability in patients undergoing brain tumour surgery. compared with fentanyl, the trachea was intubated faster without respiratory depression
結論:美托咪定能夠增強腦腫瘤手術病人術中的血流動力學穩定性。同芬太尼比較,插管更快而且不會引起呼吸抑制。Traveling cranes, drying furnaces, transformer wiring facilities, transformer automatic inspection machines, pressure meters, insulation resistance meters, ac dc stabilized power sources, memory high coder brightness meters, light meters, film thickness meters, noise meters, hand thermometers
起重機,乾燥爐,變壓器卷線設備,變壓器自動檢查機,耐壓計,絕緣電阻計,交流直流穩定性電源,內存快速編碼器亮度計,光度計,膜厚計,噪音計,手指尖溫度計Finally, the mechanisms behind the instability of fibre suspensions are presented from a point of view of vorticity. effects of fibres are investigated through equations of vorticity transport and enstrophy balance
從渦量的角度分析纖維改變懸浮流動穩定性的機理,利用渦量輸運方程與渦能平衡方程分析纖維的作用。In order to investigate the unsteady flow frequency domain performances of an axial flow compressor at different mass flow, rotating speed and blade row spacing, plus inlet flow distortion, and considering aerodynamic characteristics and stability of the compressor, the low speed research compressor ( lsc ) at college of energy and power in nuaa is used to carry out the experiment studies. a large amount of test data has been gained through dynamic pressure transducers embedded in the stator blades at the tip, middle and hub section, then fast fourier transform algorithm ( fft ) is applied to calculate the frequency data
為探討軸流壓氣機在工作流量、工作轉速及動?靜葉排軸向間距變化時的葉片排流場非定常頻譜特性變化規律,並耦合進氣畸變的影響,同時與壓氣機氣動性能和氣動穩定性相關聯,作者利用南京航空航天大學能源與動力學院的低速大尺寸軸流壓氣機( lsc )試驗器,採取在靜子葉片表面埋入動態壓力傳感器的實驗方法,對葉尖、葉中和葉根三個截面的動態壓力進行了測量,獲得了大量的可靠的實驗數據。Diagrams of velocity vectors and streamlines display waveform and amplitude properties, showing the effect of fibres on enhancing the flow stability. the computational results are tested
Piv測量得到流場速度矢量圖及流線圖,擾動波幅與波形特徵說明, re數一定時流動穩定性隨h值增大而提高。Stability of the crossflow pattern around a slender and influence of disturbance
細長體截面繞流的穩定性及擾動的影響Based on netomac, a software package for power system simulation, the model and algorithm of pre - dispatch schedule in generation markets, excitation system parameter setting, and power system small signal stability anaylsis are studied in this thesis. the main work is as follows : a model of pre - dispatch schedule is proposed, whose target is to minimize the market purchasing price ( mpp ) in the whole pre - dispatch period. then according to the characteristics of pre - dispatch schedule, the model of pre - dispatch schedule is simplified to minimize the mpp in each pre - dispatch time, and a three - step algorithm of pre - dispatch schedule is designed : dealing with the optimal problem in the whole period of pre - dispatch with static planning method, solving the problem of combination of machines with pr1 method, resolving problem of optimal power flow ( opf ) with modified powell method
本文基於netomac模擬軟體,以發電市場預調度計劃模型及演算法、勵磁系統參數整定和電力系統小擾動穩定性分析為研究內容,主要做了以下工作:建立了以整個預調度計劃周期內的市場購電價格最小為目標的發電市場預調度計劃模型,並根據預調度計劃問題狀態數多、變量多、混合整數、非解析的特點,將預調度計劃模型的目標函數簡化為各時段的市場清算電價最小,設計了三段式預調度演算法:用靜態規劃法求解整個預調度計劃周期內的優化問題;用優先級法求解機組組合問題;用改進的powell法求解最優潮流問題。This thesis researches on the stability of fibre suspensions applying theoretical, numerical and experimental methods. first the linear stability analysis is performed to fibre suspensions utilizing flow stability, slender - body and orientation tensor theories. the governing equations of channel and pipe suspensions of different stability handling modes and tensor closure approximations are derived
首先綜合應用流體動力穩定性理論、細長體理論以及纖維方向張量工具,對纖維懸浮流進行線性穩定性分析,推導槽流和管流的穩定性方程,並對槽流導出在不同的穩定性分析模式以及不同的方向張量封閉格式下的多種形式方程。In this thesis, different types of stability equations, including orr - sommerfeld equation ( ose ) and parabolized stability equation ( pse ) based on the “ slow change ” hypothesis and the local method equation which is computed in local range, are derived from navier - stokes equation with “ small disturbance ” hypothesis
本文從navier - stokes方程出發,導出不同形式的流動穩定性方程,包括採用小擾動理論得到的orr - sommerfeld方程( ose ) 、基於流向慢變特性而得到的拋物化穩定性方程( pse )以及在一小范圍內計算的局部法方程。The demarcation point of, which is the parameter in erf ' s yield stress equation, is 2. 0. for, the dynamic characteristics of the clutch are remarkably different from those for. thirdly, the linear stability of plane shearing flow with non zero pressure gradient is studied
論文第三部分對電流變液非零壓力梯度平板剪切流動的穩定性進行了分析,提出流場對屈服應力達到飽和的概念;並得出平板壁面剪切運動以及電流變液屈服應力的提高,都將使流動穩定性增強的結論。Stability characteristics are obtained through numerical analysis. in general, the influence of fibre additives and their hydrodynamic interactions to the flow results in the increase of critical reynolds number and the reduction of unstable region of disturbances, therefore reinforces the flow stability
數值求解穩定性方程得到懸浮流的穩定性特徵,發現纖維參數h值和水動力相互作用系數c _ 1的增加導致流動臨界re數增大,不穩定擾動的最大增長率降低,擾動失穩范圍縮小。Later on, the non - linear dynamic model of the coupled rotor - body system with the mrfd was constructed and a test - bed which is fit for this model was designed. at last, the dynamic stability test for the system was implemented. the result of which says that the mrfd can improve the dynamic stability of the system markedly
採用開-關控制策略進行帶磁流變阻尼器的旋翼/機體耦合動穩定性試驗,結果表明,磁流變阻尼器能明顯提高旋翼/機體耦合動穩定性裕度,體現了具有自適應能力的優點。The effect of the pressure gradient on critical reynolds number is also displayed and the influence rule of the different pressure fields on the flow stability is exploited
還研究了壓力梯度對臨界雷諾數的影響,探討了不同壓力場對流動穩定性作用的規律性。The effect of non - parallelism of stability is studied by comparing the results of parallel and nonparallel flow
通過平行流與非平行流的結果比較,研究非平行性對流動穩定性的作用。Abstract : concerning the models for discribing aerodynamic stability of axial flow compressor, the original model is one - dimensional, and it is reasonable for the onset of surge only. for the onset of rotating stall, there are just some two - dimensional models at published literatures. a three - dimensional aerodynamic of compressor has been presented in this paper. an aerodynamic stability model concerning radial disturbance of compressor is presented. the calculated results show that the occurrence of radial disturbance is related to the axial velocity disturbance, which has important effect on aerodynamic stability of compressor. the position of onset of stall, in blade tip or hub, is dependent upon the characteristics of blade element. the comparisons of calculated results predicted by 2d and 3d aerodynamic stability model have also been made in this paper
文摘:軸流壓氣機的氣動穩定性模型,最初為一維模型,僅適用於描述喘振發作.對于旋轉失速發作,在公開文獻中有一些二維模型發表.本文提出了一類考慮壓氣機徑向擾動對失速影響的新的氣動穩定性模型.計算結果表明壓氣機的軸向擾動往往隨著徑向擾動的產生,徑向擾動的強度影響壓氣機的氣動穩定性,在葉尖還是葉根首先產生失速與壓氣機基元葉柵特性密切相關.本文對軸流壓氣機二維和三維氣動穩定性模型的計算結果進行了對比分析Concerning the models for discribing aerodynamic stability of axial flow compressor, the original model is one - dimensional, and it is reasonable for the onset of surge only. for the onset of rotating stall, there are just some two - dimensional models at published literatures. a three - dimensional aerodynamic of compressor has been presented in this paper. an aerodynamic stability model concerning radial disturbance of compressor is presented. the calculated results show that the occurrence of radial disturbance is related to the axial velocity disturbance, which has important effect on aerodynamic stability of compressor. the position of onset of stall, in blade tip or hub, is dependent upon the characteristics of blade element. the comparisons of calculated results predicted by 2d and 3d aerodynamic stability model have also been made in this paper
軸流壓氣機的氣動穩定性模型,最初為一維模型,僅適用於描述喘振發作.對于旋轉失速發作,在公開文獻中有一些二維模型發表.本文提出了一類考慮壓氣機徑向擾動對失速影響的新的氣動穩定性模型.計算結果表明壓氣機的軸向擾動往往隨著徑向擾動的產生,徑向擾動的強度影響壓氣機的氣動穩定性,在葉尖還是葉根首先產生失速與壓氣機基元葉柵特性密切相關.本文對軸流壓氣機二維和三維氣動穩定性模型的計算結果進行了對比分析分享友人