數值耗散 的英文怎麼說

中文拼音 [shǔzhíhàosǎn]
數值耗散 英文
numerical di ipation
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 耗 : Ⅰ動1 （減損; 消耗） consume; cost 2 [方言] （拖延） waste time; dawdle Ⅱ名詞1 （壞的音信或消息） ...
  • 散 : 散動詞1. （由聚集而分離） break up; disperse 2. （散布） distribute; disseminate; give out 3. （排除） dispel; let out
  • 數值 : numerical value; numerial number; figure; magnitude; value數值表 numerical tabular; 數值天氣預報 ...
  1. On the basis of expound the theory of building exterior - protected construction energy consumption and the gene of influence the building energy, set up mathematics model, this article discuss the mechanism of dispelling the heat of the buildings " thermal bridge and the complication that influence it, and then synthetic analysis and calculate the influence range of building thermal bridge in exterior - protected construction column thermal bridge to the building outer wall get the conclusion that when the construction column can satisfy the building stress - area, in bulgy construction column dispel less heating than out bulgy construction column. but if the pole stuck out more than 100mm, in bulgy or out bulgy make no difference

    本文在闡述建築圍護結構耗熱原理以及影響建築能耗因子的基礎上，採用數值模擬方法，探討了建築熱橋傳熱的基本機理和影響建築熱橋傳熱的因素，進而對建築熱橋在圍護結構傳熱中的影響范圍進行了綜合分析和計算，研究了構造柱熱橋型式對建築外墻能耗的影響，得出了構造柱在滿足建築受力面積要求的情況下，內凸構造柱較外凸構造柱略能減少散熱量的結論，但是凸出過大（ 100mm ）無論內凸還是外凸對建築耗熱都沒有大的差別。
  2. In this paper, i consider the traveling wave solutions and peakons of the generalized camassa - holm ( gch ) equation and give the express of the solitons of this equation. the peakons and their figures of the gch equation are given with the mathematic software for m - 1, m = 2 and m = 3 in particular ; for m = 3, i get the generalized dissipative camassa - holm equations by adding a dissipative term and find two types exact traveling wave solutions of this equations. i also apply the homogeneous balance method into the gch equation so that i get a group of smooth solutions for m = 2 and m = 3 and the backlund transformation for m - 3 of the gch equation

    本文研究廣義camassa - holm （ gch ）方程的行波孤立子解及尖峰孤立子解，給出gch方程的行波孤立子解的表達式，特別的，對m = 1 、 m = 2 、 m = 3時利用mathematica數學軟體進行計算，解出了gch方程的尖峰孤立子解，並給出了此時gch方程的尖峰孤立子解的圖形，使數值分析和理論相結合；對m = 3時的gch方程增加一耗散項u _ （ xx ）后得到廣義耗散camassa - holm方程，並解出此方程的兩類精確行波解；本文將齊次平衡法應用到gch方程中，解出m = 2 、 m = 3時的gch方程的一組光滑解，同時應用此方法得到了m = 3時的gch方程的backlund變換。
  3. The second section : under the conditions of nonlinear boundary controbility, we consider the initial boundary value problem of camassa - holm equations with dissipative. by using the contractive mapping fixed point theorem and a priori estimates, the existence of global smooth s olution, global attractor in h ~ ( 2 ), t ime p eriodic s olution or almost - periodic solution and the global exponential stability are proved

    第二部分：在非線性控制邊界條件之下，對于帶耗散項的camassa ? holm方程的初邊值問題，用壓縮映射不動點原理及先驗估計方法，證明了整體光滑解的存在性、整體解的指數穩定性、 h ~ 2空間中整體吸引子的存在性以及時間周期解和殆時間周期解的存在性。
  4. Finally, numerical experiments are carried out to weigh the influence of the artificial dissipation coefficient a and the pseudo - compressibility coefficient

    另外，本文也對人工耗散系數和人工可壓縮系數對數值計算的影響進行了實驗。
  5. By the three dimensional numerical simulation of a project case, the distribution of pressures, turbulence kinetic energy and turbulence dissipation rate in the gentle slope spillway overflow are obtained

    通過對工程實例的三維數值模擬，得到了緩坡階梯壩面上的水壓力、紊動能和紊動耗散率的分佈規律。
  6. To overcome the disadvantages of pseudo - compressibility algorithm, four - order artificial dissipation term is added to the right of the differential equation, and the recommended formula is offered for the choice of the artificial dissipation coefficient

    為了克服人工可壓縮方法可能帶來的數值振蕩，本文在離散方程的右端顯式添加四階人工耗散項，並就人工耗散系數的選取給出了推薦公式。
  7. And the results of calculation and numerical simulation indicate, without increasing the intrinsic collector - junction area of power devices, collector - combed structure helps to raise the intrinsic heat - dissipating area and base ' s perimeter, improve heat - dissipating method of each cell of the chip, enhance the distribution uniformity of junction temperature and current of each cell of the chip, reduce the thermal resistance and raise the dissipation power pd and output power p0, fairly well relax the contradiction among frequency, out - put power and dissipation power of the devices, and further improve the devices " property against second breakdown

    而計算分析和二維數值模擬分析結果表明：梳狀集電結（基區）結構在不增加器件本徵集電結面積的條件下，增大了器件的本徵散熱面積和基區周長，改進了每個子器件單元內的散熱方式，提高了單元內結溫和電流分佈的均勻性，降低了器件的熱阻，增大了器件的耗散功率和輸出功率，較好地緩解了目前傳統結構中頻率與功率、功耗的矛盾，並有利於改善器件抗二次擊穿的性能。
  8. A new kind of generalized energy is proposed as the lyapunov function, and thereby resulting in a new criterion of generalized nonlinear symmetric stability. it shows that not only must the dissipative coefficient be greater than a certain critical value but the initial disturbance amplitude must be synchronously smaller than another marginal value as well

    從含摩擦耗散的f平面上boussinesq近似下的非線性方程組出發，提出了一種新的廣義能量作為lyapunov函數，導得了一種新的非線性對稱穩定性判據：即不僅耗散系數大於某一臨界值而且同時初始擾動振幅小於另一臨界值。
  9. Using a forced dissipative nondivergent nonlinear barotropic vorticity equation and by means of various schemes, we did simulation experiment and get its numerical solution

    從強迫耗散無輻散正壓渦度方程出發，用不同方案模擬試驗得到它的數值解，它與已經導得解析解的特徵較為一致。
  10. Expressions in three kinds of perfectly matched layer ( pml ) absorbing boundary conditions is also given. second, the numerical theories of the auxiliary fields fdtd method is studied, including the stability of the differential equations and the numerical dispersive relationship. the stability of two kinds of differential formulations and three kinds of pml is compared, using a straight method depending on the pmax - t graph

    更進一步，研究了輔助場fdtd方法的數值理論，對其微分方程、差代方程的穩定性進行了分析，比較了有耗媒質中的兩種差分格式和三種理想匹配層中的差分格式的穩定性，提出了一種通過p _ （ max ） - t曲線判定穩定性並求出穩定性條件的直觀方法，並導出了該方法的色散關系式。
  11. We transformed the nonlinear equation of the light - wave envelope in lossy dispersion - managed optical fibers and obtained numerical curve of the equation with the use of mathematical software, then the approximate solution was found by fitting of the curve, also the envelope propagation of the quasi - soliton was analysed

    摘要對有損耗的色散光纖中光波包絡的非線性方程進行變換，藉助數學軟體得到非線性方程的數值曲線，並通過對曲線的擬合得到方程的近似解，對色散管理類明孤子的傳輸進行了分析。
  12. Then numerical experiments on forcing dissipation and heating response of dipole ( unipole ) are carried out using global spectral model of quasi - geostrophic barotropic vorticity equation. for every experiment model integration is run for 90 days on the condition of three waves quasi - resonance. the results are given as follows : ( 1 ) under the effects of basic flow intensity and dipole ( unipole ) forcing source, there exist strong interaction among the three planetary waves, and there also exist quasi - two - week and intra - seasonal oscillation of the three planetary waves

    然後，用數值試驗的方法，應用強迫耗散準地轉正壓渦度方程的全球譜模式，並在方程中考慮了偶（單）極子的熱力強迫作用，在三個行星波準共振的條件下，模式共積分90d ，得出： （ 1 ）在基本氣流強度和偶（單）極強迫熱源的共同作用下，三個行星波之間存在很強的波?波相互作用，且波動振蕩呈現準雙周和季節內振蕩。
  13. Compared with the original elm, the numerical experiments show that the improved elm has lower numerical dissipation, higher accuracy, and better performance over steep topography

    數值試驗表明，改進后的歐拉拉格朗日方法在水深變化劇烈處比改進前的數值耗散更小、精度更高和表現更合理。
  14. The investigation in this dissertation shows the capabilities of ausm + scheme, such as the exact resolution of shock, low numerical dissipation, simple and requiring less computational effort. the successful applications on supercritical airfoils and wings show that the present flow solvers based on ausm + scheme are of valuable and promising in practical application

    通過本文的研究工作，展示了ausm +格式的激波高解析度、數值耗散小、編程簡潔、計算量較小等特性，同時，將其成功地應用於跨音速超臨界翼型、機翼的定常或非定常氣動特性的數值模擬和顫振研究中，具有一定的工程應用價值和良好的發展前景。
  15. In order to reduce the computing time and improve efficiency, the procedure has been paralleled and the distributed parallel computation is accomplished in a net with four pcs. the parallel computation of static aeroelasticity and flutter has been initiated at home. on this basis, the work includes four parts

    通過對單機串列程序進行分散式并行化改造，在國內首次實現了基於微機網路上的靜氣動彈性和顫振分散式并行計算，解決了數值求解氣動彈性問題難以避免的耗時巨大的問題。
  16. Hamiltonian systems arise widely in the fields of physics, mechanics, engineering, pure and applied mathematics, etc. it is generally accepted that all real physical processes with negligible dissipation could be expressed, in some way, by hamiltonian formalism, so that the research work for corresponding numerical methods is of important interest

    Hamilton系統廣泛地出現於物理、力學、工程、純數學與應用數學等領域。通常可以認為，一切耗散效應可忽略的真實物理過程，都能夠以某一方式表達成哈氏方程的形式。從而，對其數值方法的研究無疑具有重要意義。
  17. At last, some theory analysis on wave quasi - resonance in forced and dissipative barotropic atmosphere is analysed in theoretics, which further proved the results of diagnosis and numerical experiments is understated

    最後，對強迫耗散正壓大氣波動準共振進行了理論分析，進一步證實了本文的診斷分析和數值試驗結果。
  18. For scalar equation and system of equations, we build different ghost fields, translate one equation ( system ) into two equations ( system ). we still use high resolution shock capturing method to compute the two equations ( system ) ; level set equation is used to track the interface, and the result of original equation ( system ) is determined by the level set function. thus, we eliminate the numerical dissipation which high resolution shock capturing method cannot avoid near the interface, and the resolution is enhanced

    對標量守恆律方程、守恆律方程組分別構造了一種虛擬區域，將一個方程（組）轉化成兩個方程（組） ，對這兩個方程（組） ，我們仍然使用高解析度激波捕捉格式，而levelset方程用來追蹤間斷的位置，原方程（組）的解最後由levelset函數決定：這樣做彌補了高解析度激波捕捉方法在間斷附近發生數值耗散的缺陷，提高間斷處的解析度。
  19. Numerical calculation results show that the developed scheme has many advantages such as having small dissipation and dispersion, needing little nodes, being put into practice easily, and being well suitable for both convection - dominant flow and diffusion - dominant flow

    數值試驗結果表明，該格式具有數值耗散和數值頻散較小、節點少、便於應用等特點，且對求解對流擴散方程的對流占優和擴散占優的流動均有較好的適應性。
  20. However, when we use these schemes to compute the initial problem of hyperbolic conservation laws, there is still numerical dissipation near the interface, that is to say, the resolution is decreased near the interface

    但是，我們知道，即使用這兩種格式來計算雙曲守恆律方程的初值問題，在間斷面的附近仍會發生數值耗散，也就是說在間斷處的解析度降低了。
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