numerical flux 中文意思是什麼
numerical flux
解釋
數值通量-
Regard - ing the surface runoff mechanism, liang and xie 1, 2 presented a new surface runoff parameterization which dynamically represents both the horton and dunne runoff generation mechanisms within within a model grid cell together with a consideration of the subgrid - scale het - erogeneity, which can be applied to not only humid regions but also droughty regions as well 3, 4. regard - ing the soil water movement, xie et al. 5 developed an unsaturated flow numerical model based on the finite element method, and xie et al. 6 presented another numerical model to compute soil moisture and water flow flux together by means of a mixed finite element method
在地表徑流方面，文獻1 3發展了一種同時考慮蓄滿超滲產流機制及次網格非均勻性的新的徑流機制模型，並用其改進了陸面模式vic variable infiltration capacity中的徑流計算，該模型既適用於濕潤地區也適用於乾旱地區4 .在土壤水模型方面，文獻5採用有限元質量集中法發展了非飽和土壤水流的數值模型，文獻6則採用混合有限元法建立了非飽和土壤水分含量和通量計算的數值模型 -
This paper applies kami ' s method to analyze conservative scheme in lagrangian coordinate, and then selects one of upwind schemes which do not show oscillations, finally applies it to construct high resolution scheme. numerical flux of one order scheme is used near interface, while numerical flux of high resolution scheme is adopted in other area
本文在對lagrange坐標系下的守恆型格式進行詳細分析后，甄選出不震蕩的一階迎風型格式，然後應用於lagrange坐標系下的高解析度格式，在物質交界面處採用不震蕩的一階迎風型格式的數值通量，而在其餘地方採用高解析度格式的數值通量。 -
In fluid field solving, the numerical flux is estimated using high - accuracy roe scheme with limiter. in time marching, we use dual - time stepping together with implicit lu - sgs scheme and get reasonable results efficiently. the difference of the fluid computation between single grid and overset grids lies in the dispose of the computation boundary
流場解算時，對流場數值通量的求解採用的是帶限制器的高階精度roe格式，時間推進採用了含雙時間步長的隱式lu - sgs （ lower - uppersymmetricgauss - seidel ）格式，提高了求解的效率。 -
In this paper, we have studied the transmission of a plane wave through a 1d quasiperiodic or aperiodic chain by numerical method. moreover the heat conduction for these chains is calculated. it is found that the heat flux j ~ n - 1 ( 0. 5 < < 1 ), and depends on the on - site potentials
本文首先用數值方法，計算了各種頻率的平面波通過以上幾種典型的一維準周期和非周期鏈的透射系數，並據此研究了這幾種一維準周期和非周期鏈的熱通量j與粒子數n之間的關系，得出j n ~ （ a - 1 ） ， 0 . 5 1 ，與系統中在位勢的大小有關，並與其他系統的結果作了比較。 -
Through derivation the present thesis proves numerical value flux conserva tion of sub - domains interface boundary can make parallel numerical schemes conservative
通過推導證明了只有使內邊界數值通量守恆才能使并行后的總體數值格式是守恆的。 -
The numerical algorithm of solving the adjoint equations for different design cases have been developed by using finite volume methodology which is usually used to solve the flow governed equation. it includes the some important aspects, such as flux formulation, wall and far - field boundary treatment methodology, dissipative term formulation, etc. after the solution of the adjoint equations is obtained, the derivatives of the cost function with respect to all the design variables can be evaluated with the same operation. this can yields a significant saving over the other gradient - based techniques when there are many design variables
（ 3 ）進行了應用控制理論和三維歐拉方程的機翼氣動反設計研究，以及有升力約束情形下機翼跨音速減阻問題研究，分別推導了相應的共軛方程及邊界條件數學表達形式，研究與發展了三維共軛方程的有限體積數值求解方法，及相應梯度公式的數值求解方法，通過對計算網格生成、流場計算、共軛方程數值求解、梯度求解和優化演算法等多方面的有效結合，成功發展了三維機翼的氣動反設計和跨音速減阻優化設計程序，成功地進行了多個設計算例研究。 -
In order to achieve a computer code with a maximum degree of vectorization, the numerical flux function must be written uniformly with sign function. to get higher order accuracy, the muscl interpolation functions are applied for van leer and roe schemes
Vanleer和roe格式摘要（ abstraet ）均採用muscl插值使格式具有高階精度，並採用連續可微的vanalbada通量限制器，使格式具有良好的穩定性和收斂特性。 -
The performance of catalyst beds was experimentally studied. the influence on decomposition was investigated with changing the mass flux through the cross of the catalyst bed and the initial temperature of the catalyst bed. the experimental results were compared with those of the numerical simulation
對過氧化氫催化床的催化性能進行了試驗研究，分析了催化床床載、催化床初始溫度對過氧化氫催化分解的影響，與一維情況下的數值模擬結果進行了對比。 -
It can rescue the patients who eat any kind of mistake food or medicine. this machine can display the numerical value of pressure, ph, flux, and give the alarm of sound or light alarm. it can complete to wash the stomach process automatically, according to the demand and also can operate artificially, increasing the successful rate for rescuing of the patients
該機器在醫院里用於清洗胃內毒物，搶救各種誤食藥物或者食物中毒的病人，該機具有顯示壓力、流量、 ph值等測量結果及其多種聲光報警，增加了儀器的安全性，能按要求自動完成清胃過程，也可人工操作，增加了搶救病人的成功率。 -
This text makes the flux of numerical value of interface boundary among sub - domains reach the conservation with a kind of simpler method
本文用了一種比較簡單的方法使子分區之間的內邊界數值通量達到守恆。 -
In these regions, an expensive high - order accurate eno scheme is applied to evaluate the numerical flux at cell boundaries. and hi smooth regions a cheap spline interpolation is used to get the value of the numerical divergence from values previously obtained on lower resolution scales to save the computational cost
在這些奇性區域，我們利用代價昂貴的高階基本無振蕩格式計算單元邊界的數值通量；而在解光滑的區域，則用廉價的樣條插值根據先前低分辨尺度上得到的值來計算出其數值散度，從而減少計算工作量。 -
Abstract : by employing the concept of photon flux, the evolution of the phase and photon flux in the eigenmode state in three - wave mixing, and the requirements for the initial phase and photon flux in this state, are studied in the paper. a special state in which there are only exchanges of the photon flux but no phase variations in the three - wave mixing process is investigated. an all - optical switch based on the eigenmode pushpull nonlinear - optical - mirror is presented, and the properties of this all - optical switch are numerically calculated. the numerical results show that the performance stability is extremely good, and the intensity and phase of the output signal beams can be easily realized and controlled
文摘:利用光子流概念研究了三波混頻中本徵模狀態的相位和光子流的變化，以及該狀態對光波的初始相位和初始光子流的要求，研究了三波混頻中只有光子流的交換卻沒有相位變化的特殊狀態，提出了本徵模狀態推拉式非線性光環鏡的全光開關，並數值計算了這種全光開關的性能，數值結果表明，該光開關的性能穩定性好，並且易於實現和控制輸出信號光的光強及相位 -
It is built as an open platform for scientific research on groundwater circulation at different scale, resource and environment effects, water - salt flux variation at interface and effects on the global climate induced by human activities, assessments of regional groundwater and the detective technology, isotopes during the groundwater evolution, numerical simulation and predict technique
發揮我所尖端科研資源優勢，建設開放式創新研究平臺，主要支持開展不同時空尺度地下水循環演化過程、資源與環境效應及其動力學，層圈間不同界面水鹽通量變化及其對全球氣候變化和人類活動影響的響應機制，區域含水層系統探測技術與評價理論，地下水演化的同位素與數值模擬、預測技術等研究。 -
With the fdtd method to solve the maxwell equations, with the finite - volume method to solve the n - s equations and with the single temperature local thermal equilibrium to solve plasma, first time to adopt the method of all numerical simulation, the coupling flow field of microwave plasma within resonant cavity of mpt was analyzed. for tm011 model and tem model, the matching relation between various parameters and its influence on the coupling flow field of microwave plasma within resonant cavity of mpt was studied separately. the reasonable selection of miniaturization design parameters was pointed out in the numerical simulation to be used in mpt miniaturization, i. e. throat, gas flux and microwave power should be smaller suitable after miniaturization
採用fdtd法求解maxwell方程、有限體積法求解n - s方程、單溫度局域熱平衡模型求解等離子體參數，首次用全數值方法對mpt諧振腔進行了微波等離子體耦合流場的數值模擬，分別分析了tm _ （ 011 ）和tem兩種模式各自的參數匹配關系及其對微波等離子體流場的影響；應用於小型化mpt時，指出了小型化設計參數的合理選取，即：小型化后的mpt ，喉徑小、工質流量小，消耗的微波功率也小。 -
A new aerodynamic design system developed by authors for draft fan with enhanced efficiency, suppressed noise, enlarged flux and high load. the new design system features : a twist regulation for vortex control is employed in designing to lessen the secondary flow loss in the blade tip and hub ; the feasibility and high efficiency of this procedure has been verified by the tests of the prototype fan ; a new computer - aided 3d blading is used to optimize the blade ; numerical inverse checking is adopted to enhance accuracy in designing and cut down the period of the designing and production. this design system can make the optimized blade with " forward inclination ", " inclining sweep ", " bending sweep ", to minimize the various secondary flow losses, to expand the steady working range of the fan, and to suppress the aerodynamic noise source
本文通過對一種新型高性能礦用局部通風機的設計、製造及試驗全過程的綜述，展現了新的先進設計體系在民用通風機上的成功運用，其研製特點是： （ 1 ）在葉片氣動設計中為了降低葉根及葉尖區二次流損失，採用可控渦扭向規律設計，樣機實測的高性能驗證了這種方法的可行性和高效性； （ 2 ）在設計方法中採用較精確的數值反驗算，獲取最優設計方案，大大提高設計的準確性和成功率，並縮短了設計試制周期； （ 3 ）在設計過程中發展了計算機輔助三維葉片造型新方法，可以根據設計需要簡便快捷地對葉片進行「前傾」 、 「傾掠」或「彎掠」造型，這些造型對減小各種二次流損失、擴大穩定工況范圍和控制葉輪機氣動噪聲源起到了非常好的作用。 -
Abstract : a new aerodynamic design system developed by authors for draft fan with enhanced efficiency, suppressed noise, enlarged flux and high load. the new design system features : a twist regulation for vortex control is employed in designing to lessen the secondary flow loss in the blade tip and hub ; the feasibility and high efficiency of this procedure has been verified by the tests of the prototype fan ; a new computer - aided 3d blading is used to optimize the blade ; numerical inverse checking is adopted to enhance accuracy in designing and cut down the period of the designing and production. this design system can make the optimized blade with " forward inclination ", " inclining sweep ", " bending sweep ", to minimize the various secondary flow losses, to expand the steady working range of the fan, and to suppress the aerodynamic noise source
文摘:本文通過對一種新型高性能礦用局部通風機的設計、製造及試驗全過程的綜述，展現了新的先進設計體系在民用通風機上的成功運用，其研製特點是： （ 1 ）在葉片氣動設計中為了降低葉根及葉尖區二次流損失，採用可控渦扭向規律設計，樣機實測的高性能驗證了這種方法的可行性和高效性； （ 2 ）在設計方法中採用較精確的數值反驗算，獲取最優設計方案，大大提高設計的準確性和成功率，並縮短了設計試制周期； （ 3 ）在設計過程中發展了計算機輔助三維葉片造型新方法，可以根據設計需要簡便快捷地對葉片進行「前傾」 、 「傾掠」或「彎掠」造型，這些造型對減小各種二次流損失、擴大穩定工況范圍和控制葉輪機氣動噪聲源起到了非常好的作用。 -
( 6 ) 3d integer model of spillway and frusta of brake are established and numerical computation of 3d viscous flow over spillway is completed. the influence of frusta of brake for design parameters such as shape of free surface, pressure on dam, flux coefficient is computed aim at type of frusta of brake and disposal on dam and compute result of different type of frusta and disposal model is compared
6 ）通過建立溢流壩和閘墩的三維整體模型，完成了對三維過壩水流粘流場的數值計算，針對閘墩的型式及在壩面的布置計算了閘墩對水面線形狀、壩面壓力、流量系數等設計參數的影響，並將不同墩型與布置形式的計算結果進行比較。 -
The numerical simulation of the land surface process has been focused on as the climatic effects of it have been further studied recently, and the parameterization schemes about land surface flux have been researched broadly
近幾十年來，隨著陸面過程的氣候效應的深入研究，陸面過程的數值模擬也得到了越來越多的重視，各種地表通量的參數化方案更是為掌者們廣泛探討。 -
The paper studies the the flux uniformity of the outlet when ventilates at one end of vault in the main workshop of xiluodu underground hydropower station via the method of numerical simulation cfd, puts forward means which can achieve symmetrical ventilation, validates the cfd results credibility by the way of model experiment afterward
本文採用cfd數值模擬的方法對溪洛渡地下電站主廠房拱頂一端送風的均勻性進行了研究，提出了實現均勻送風的手段，然後用相似模型實驗進行了驗證，並據此提出了均勻送風拱頂與非均勻送風拱頂的網路基元模型。 -
The heat flux in gauss distribution heat input model employed in numerical simulation of line heating is determined by heating efficiency and heating radius that are determined by acetylene flow rate in turn
摘要水火彎板數值計算所用高斯分佈的熱源模型中熱流密度由熱效率和熱源半徑決定，而熱效率和熱流密度主要取決于乙炔流量。
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