計算穩定度 的英文怎麼說
中文拼音 [jìsuànwěndìngdù]
計算穩定度
英文
computational stability- 計 : Ⅰ動詞1 (計算) count; compute; calculate; number 2 (設想; 打算) plan; plot Ⅱ名詞1 (測量或計算...
- 算 : Ⅰ動詞1 (計算數目) calculate; reckon; compute; figure 2 (計算進去) include; count 3 (謀劃;計...
- 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...
- 度 : 度動詞[書面語] (推測; 估計) surmise; estimate
- 計算 : 1 (求得未知數) count; compute; calculate; reckon; enumerate 2 (考慮; 籌劃) consideration; pla...
- 穩定度 : degree of fixation
- 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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3. developed simply and practical fluid network algorithm for large - scale of pipe networks, such as air - gas system and powder manufacture system. iterative computation used in this algorithm is not only astringing quickly and numerical calculating steadily but also cater the required ratio of precision and guarantee the real - time and any performance simulation of fluid network
3 、本文對風煙系統和制粉系統等大型管網,建立了簡單實用的流體網路模型演算法,此法在迭代計算中,不僅可以快速收斂和數值計算穩定,而且滿足一定的模擬精度,較好的保證了流體網路的全工況實時模擬。By the check - out, inspection and measurement to start construction the industrial art to this test pile with the examination between stake body mass and bearing power, made sure the stroke reasonable operation method drilling under the dissolved cavern geology term ; the pier foundation loading test expressed the lading and rub the lading that resistance drag a glazing for of relation, and to the borehole cast - in - place concrete pile in the karst terrain deliver with break the mechanism, the characteristic of bearing power, proceeding the spot test job of the full of result ; the test data expresses the stake side friction resistance to rises with a bat batch terminal friction resistance very important function, the of tip of pile resistance drag occupies the proportion very few
通過對本次試樁施工工藝的檢測和樁身質量及承載力的檢驗,確定了沖擊鉆在溶洞地質條件下的合理使用方法;基樁承載實驗表明了荷載與摩擦阻力之間的關系,並對巖溶地區的嵌巖灌注樁的荷載傳遞和破壞機理、承載力特性,進行了富有成果的現場測試工作;試驗數據表明樁側摩阻和支盤端阻起很重要的作用,樁端阻力所佔比例甚少。這與設計樁基時的計算模式相差很大,承載力也較設計增加;使用力學數值分析方法和有限單元法,對鉆孔灌注樁樁端下的巖體強度和結構穩定性方面進行模擬計算和定量研究。Calculation and precision analysis for the whole stability of centrally compressed sewed slab latticed column
綴板式格構軸壓構件整體穩定性計算及精度分析Topics covered include : properties and advantages of feedback systems, time - domain and frequency - domain performance measures, stability and degree of stability, root locus method, nyquist criterion, frequency - domain design, compensation techniques, application to a wide variety of physical systems, internal and external compensation of operational amplifiers, modelling and compensation of power coverter systems and phase lock loops
所涉及的主題包括:反饋系統的特性和優勢,時域和頻域性能度量,穩定和穩定度,根軌跡法,奈魁斯特準則,頻域設計,補償技術,種類繁多的物理系統應用,運算放大器的內部和外部補償,能量轉換系統的建模和補償,以及鎖相環。Firstly, the resault of daily calculation about all kinds of potential instability parameter in a month show that, as a vertical integral potential instability parameter, cape ' s daily variation corresponded to the severe convective storms " occurrence
首先,逐日計算2003年江淮梅雨期的各種位勢穩定度因子,結果表明, cape屬於垂直積分穩定度指數,其日變化與強對流風暴的發生有較好的對應關系。Calculation of checking conditions for dynamic stability three - phase and symmetric power system being shorted
三相對稱電力系統短路時動穩定度校驗條件的計算In the case of 16 boundaries, cubic b - spline function taken as trial function, the solutions to nonlinear stability of truncated conical shells and spherical shells with variable thickness were obtained by the method of point collocation
在16種邊界條件下,以三次b樣條函數為試函數,用配點法計算變厚度開頂圓錐殼和球殼的非線性穩定。The additional sub - scale flux is mainly determined by the average grid value, coefficient of variation and correlations among the meteorology parameters. ( 2 ) the additional sub - scale turbulence flux is composed by two parts, one part is induced by the correlations among the transfer coefficient, surface temperature and soil humidity, another is caused by non - line relationship between the transfer coefficient and roughness, stability
( 2 )非均勻分佈引起的附加次網格地表湍流通量主要由兩部分組成:一是地表次網格上輸送系數和地表溫度、濕度的相關項,另一是由於模式中計算整體輸送系數時,整體輸送系數是地表粗糙度和穩定度的非線性函數所造成擾動項。The results show that there are two centers of occurrence of llsw respectively in dong bei and jiang nan ; the regional torrential rain over the yangtze river basin is closely associated with llsw during the major periods of heavy rainfall ; the diurnal variation of the number of occurrence in the middle and low reaches of the yangtze river is the strongest in china there are some significant differences between llj and nallsw in positive season, spatial variation, diurnal variation and field of pressure. by the way, the important effect of inertial stability on heavy rainfall with both low level south - westerly jet and high level northerly strong flow is analyzed theoretically. the results show that the existence of the maximum of inertial stability in the left font of the low level jet is favor of the accumulation of the moist thermal energy, and conditional symmetric instability or convective instability can be expected in this region
另外,慣性穩定性的作用以往不受重視,本文通過對西南低空急流左前方和高空偏北大風軸右後方的慣性穩定性和對稱穩定性的理論分析和實例計算,表明慣性穩定性在伴有高低空急流的暴雨中有重要意義,揭示了梅雨暴雨的一種新的高低空急流耦合機制:低空急流左前方慣性穩定度大值區的存在,有利於低層濕熱能量的積累,使低層傾斜對流的不穩定發展更多期望于條件性對稱不穩定或對流不穩定;高空偏北大風軸(西風急流)的存在,是其右後方(右側)出現對稱不穩定的有利條件,高空相對容易出現干對稱不穩定;慣性穩定性的作用,使低層的傾斜對流更偏向於垂直方向,有利於對流發展,使高層的傾斜對流更偏向於水平方向,有利於高層輻散。The main works and results we have accomplished are as follows : 1 ) red - detuned locking of cooling / trapping laser to the cycling transition of cesium cooling has been accomplished by means of a double - passed acoustic - optical frequency shifting system and the technique of saturated absorption spectroscopy. the short - term residual frequency jitter is less than 350khz ; 2 ) automatic controlling system by computer programs has been established for laser cooling and trapping and cavity qed experiment. the laser and magnetic fields can be controlled by the acoustic - optical modulator and the electronic - controlled logic gate respectively
具體如下: 1 )採用了往返兩次通過的聲光頻移系統結合飽和吸收光譜技術的實驗方案,實現了冷卻俘獲激光頻率相對于銫原子冷卻循環躍遷的負失諧鎖定,短期頻率穩定度約在350khz以內,並可方便地調節其負失諧量而無須對后續光路再作調整; 2 )建立了一套基於計算機程序控制的、銫原子激光冷卻與俘獲實驗所需的時序控制系統。A large amount of numerical experiments indicates that the improved algorithm has good computing stability and high accuracy
大量數值實驗表明,改進演算法具有良好的計算穩定性和較高的計算精度。Non - uniformity of the amplifying effect and dimension of the slope are pointed out through analysis of the distribution of the stress and sonic speed in the slope. forms of slope lost stability resulted from blasting vibration are analyzed and appraising rules of slope stability are summarized by a great deal instances on coasts. based on general discussion about calculation methods of the slope stability under the effect of blasting vibration, the synthetical method, a new one, is put forward, analyzed through a sample by and pointed out which is one of most valid methods
利用波動理論,得出延期時間為nt / m時減震效果最好;在分析邊坡巖體內部應力、質點速度等分佈規律的基礎上,指出邊坡震動放大效應的不均勻性和邊坡尺寸效應;結合大量滑坡實例,分析了爆破震動引起邊坡失穩破壞的幾種形式,總結出邊坡穩定性評價準則;基於對邊坡穩定性計算方法的綜合分析,提出了一種綜合分析方法,通過算例計算分析,證明該法計算精確度高、功能全面,是邊坡動力穩定性分析的有效方法之一。The original design was intermediate vapor 42t / h, but the actual output is 30 - 35t / h, at the same time the temperature and pressure of the vapor are unstable, it affects the economic efficiency, the reason were the collecting dust on the heat area and serious corrision, they led to the decrease of the boiler load, and need stop to washing the dust, the article deals with the reform of the exhaust gas boiler, at the basic of the design condition, after thermo calculation, flute gas, resistence calculationand strenth calculation, the structure of the heat surface had been rearranged, then the proof calculation was done
原設計產中壓蒸汽42噸時,但投運后只產30 - 35噸時,並且蒸汽溫度和壓力均不穩定,影響到經濟效益。其原因是受熱面積灰和腐蝕嚴重,影響傳熱使鍋爐負荷下降,不能長時間運行,需停產清理積灰。本論文針對此余熱鍋爐的技術改造,在給定設計條件基礎上,通過熱力計算,煙氣阻力計算和強度計算,對鍋爐受熱面結構重新布置,然後再作校核計算。The result demonstrates that the variable phase center of fish antenna is much more steady than the lpda in the main beam
計算結果表明魚骨天線在主波束相當寬的范圍內,其可變相位中心的穩定度要優于對數周期偶極子天線。Optimizing the algorithms of the compensation network can enhance the certified rate and the frequency stability
優化計算補償網路參數的演算法能夠提高atcxo的產品合格率和頻率穩定度。A combined gauss main - element elimination method with compress - storage technique is proposed, which with the characteristic of less - storage requirement, small rounding off and high stability, and solved the problem of large storage requirements in solving large linear algebraic equations in river networks hydraulics, 3
提出了壓縮存貯形式的gauss列主元消去法,該方法具有存貯量小、舍入誤差小、數值計算穩定的特點,在一定程度上解決了河網水力計算問題中關于眾多線性方程組的存貯及其求解過程中可能面臨的困難。Important missing aspects are : turbulent flow, numerical discretization techniques specially the relevant and difficult topic of numerical treatment of advection and related numerical methods of solution, variable property fluids, boundary layers, stability, etc. rather, it focuses on more primitive and fundamental issues of numerical treatment of advective equation and proper formulation of initial boundary value ( ib vp ). numerical problems associated with advective dominated transport include spurious oscillation, numerical dispersion, peak clipping, and grid oriention. however, the key of numerical solution of three - dimensional advective problem is searching for a high - precision interpolating function, which can keep the computational stability and low damping
3 、針對三維純對流方程提出了實用的擬協調單元模式,並與線性插值模式和協調單元模式比較后表明,在物理量大梯度變化的情況下,線性插值模式會產生較大的數值阻尼,導致解的失真;協調單元模式具有極高的計算精度和良好的計算穩定性,還可較好地克服數值阻尼,但由於計及物理量的二階導數項,計算工作量大,邊界條件給定尚存在一定的困難;而擬協調單元模式不僅具有協調單元模式計算精度高的優點,還避免了物理量的二階導數項,可大大地減少計算工作量。In the numerical simulation of hypersonic chemical nonequilibrium flows, species density may become negative at the beginning of calculation, chemical stiffness is the main reason that affects the calculation ' s stability and convergence
摘要高超聲速三維化學非平衡繞流流場的數值模擬中,在計算初期容易發生組元密度出現負值的非物理現象,另外源項的剛性是影響計算穩定性和收斂速度的主要原因。The main features of this system are : ( 1 ) design and calculate stable fiber paths fulfilling all technical requirements ; ( 2 ) update of the geometry of the mandrel surface with the increase of the thickness ; ( 3 ) the transfer of laminate data to fea - program for detail stress analysis ; ( 4 ) generation of the control data file for four axes winding and ( 5 ) the real time simulation of fiber paths and machine paths
該系統主要特點有1 )設計和計算穩定的纖維路徑; 2 )隨厚度變化自動更新芯模曲面形狀; 3 )為有限元分析提供路徑網格數據; 4 )生成用於四軸纏繞機的運動控制指令數據以及5 )纏繞過程三維圖形模擬。The formulation for the error analysis of acoustic radiation problem calculated by the boundary point method ( bpm ) is put forward ; the physical explanation of the boundary point analysis of the acoustic radiation problem is given ; the influence of the particular solution on the calculation stability of the bpm is studied ; the etthanced volume source boundary point method ( evsbpm ) is presented ; a test for the effectiveness of the evsbpm is carried out on the aspects of its calculation precision, calculation speed, calculation stability, adaptation to the geometric shape of vibrating body as well as its ability to overcome the non - uniqueness problem through various examples with different boundary shapes and different boundary value distributions
第三章導出了邊界點方法分析振動聲輻射問題的誤差估計理論公式,揭示了邊界點方法分析振動聲輻射問題的物理本質;研究了特解場的局部特性對邊界點方法的數值穩定性的影響;改進了現有的特解場構造方法,提出了改進體積源邊界點方法;通過諸多不同邊界曲面和不同邊界量分佈的聲輻射算例,從計算精度、計算速度、計算穩定性、對振動體表面幾何形狀的適應性以及克服解的非唯一性等方面,對改進體積源邊界點方法的有效性進行了考證。分享友人