convection diffusion 中文意思是什麼

convection diffusion 解釋
對倆散
  • convection : n. 1. 傳送。2. 【物理學】運流，環流；【氣象學】對流，上升氣流。
  • diffusion : n. 1. 散布，發散。2. 傳播，普及。3. 冗長。4. 【化學】滲濾。5. 【物理學】擴散，漫射。
  1. The modified method of characteristics with adjusted advection based on weno interpolation for nonlinear convection - diffusion equation

    對流擴散方程的基於加權本質非振蕩插值的調整對流的修正特徵差分解法
  2. New compressible fluid equations with unified convection diffusion type

    統一的對流擴散型可壓縮流體力學方程與解法
  3. Adaptive upwind fem for nonlinear convection - diffusion equations

    非線性對流擴散方程迎風有限元的自適應方法
  4. A new finite volume method for two dimensional convection - diffusion problems

    二維擴散輸移問題的一種新的有限體積演算法
  5. Modified alternating group methods of four points for the convection - diffusion equation

    對流擴散方程修正的交替分組四點方法
  6. Some exact solutions to nonlinear convection - diffusion equation

    擴散方程的一些精確解
  7. Then a one - dimensional unsteady incompressible flow with moving pollutant source model was proposed. the continuity equation, momentum equation and convection - diffusion equation were discredited using finite volume scheme. thus a software for predicting the air velocity and pollutant in railway double track tunnels was developed

    接著，根據雙線鐵路隧道運營通風的特點，建立了一維不可壓縮非恆定流和流動污染源的物理模型以及山相應的連續性方程、動量方程和對流擴散方程構成的數學模型；在此基礎上，利用數值計算方法，編制了一套雙線鐵路隧道運營通風的數值計算程序。
  8. ( 5 ) discuss some mathematical models of the pollutant transport problems in some local river flow fields. by integral transform method, the paper establishes the usual finite difference approximation scheme to solve the numerical solutions and gives examples for the computation of the approximating solutions, moreover, discusses one - dimensional characteristic finite difference method for a convection - diffusion equation under usual conditions

    （ 5 ）針對水域中污染物輸移問題的數學模型，通過積分變換法，得到了簡化模型在理想化條件下的近似精確解，同時給出數值算例，並且對非理想化條件下模型的特徵差分方法進行了討論。
  9. At first, a two - dimensional across - the - channel mathematical model for simulation of a direct methanol fuel cell is described. the model accounts simultaneously for electrochemical kinetics, hydrodynamics, and multicomponent transport, and fully accounts for the mixed potential effects of methanol oxidation at the cathode as a result of methanol crossover caused by convection, diffusion and electro - osmosis

    首先描述了一個用於模擬直接甲醇燃料電池特性的垂直於流道的二維數學模型，模型考慮了多組分傳遞、水動力學和電化學動力學，並且考慮了甲醇竄流在電池陰極產生的混合電位的影響。
  10. A high - order finite diference scheme for nonlinear convection - diffusion problems on nonuniform grids

    指數的半線性橢圓系統的非平凡解
  11. Local error estimate for method of operator splitting for convection - diffusion equations

    擴散方程運算元分裂方法的局部誤差估計
  12. A steady leapfrog integration scheme for solving two - dimensional convection - diffusion equation

    二維對流擴散方程恆穩的蛙跳積分格式
  13. In the study of entropy expression of porous media convection - diffusion process, the reason why minimum entropy production principle is uncomformable is analyzed

    在多孔介質對流擴散問題的熵產規律的研究中，分析了最小熵產原理在這一問題中的不適應性的原因。
  14. Multigrid method based on the high accuracy full implicit scheme of the convection diffusion equation

    二維對流擴散方程的高精度全隱式多重網格方法
  15. By using the undetermined coefficient method, a new scheme is derived from the hauc2 scheme to simulate the two dimensional convection - diffusion equation

    摘要運用待定系數法，建立了求解二維對流擴散方程的hauc2格式。
  16. This feature reflects the physical phenomenon of breaking of waves and development of shock waves. in the fields of fulid dynamics, ( 0. 2. 1 ) is an approximation of small visvosity phenomenon. if viscosity ( or the diffusion term, two derivatives ) are added to ( 0. 2. 1 ), it can be researched in the classical way which say that the solutions become very smooth immediately even for coarse inital data because of the diffusion of viscosity. a natural idea ( method of regularity ) is obtained as follows : solutions of the viscous convection - diffusion pr oblem approachs to the solutions of ( 0. 2. 1 ) when the viscosity goes to zeros. another method is numerical method such as difference methods, finite element method, spectrum method or finite volume method etc. numerical solutions which is constructed from the numerical scheme approximate to the solutions of the hyperbolic con - ervation laws ( 0. 2. 1 ) as the discretation parameter goes to zero. the aim of these two methods is to construct approximate solutions and then to conside the stability of approximate so - lutions ( i, e. the upper bound of approximate solutions in the suitable norms, especally for that independent of the approximate parameters ). using the compactness framework ( such as bv compactness, l1 compactness and compensated compactness etc ) and the fact that the truncation is small, the approximate function consquence approch to a function which is exactly the solutions of ( 0. 2. 1 ) in some sense of definiton

    當考慮粘性后，即在數學上反映為（ 0 . 1 . 1 ）中多了擴散項（二階導數項） ，即使很粗糙的初始數據，解在瞬間內變的很光滑，這由於流體的粘性擴散引起，這種對流-擴散問題可用古典的微分方程來研究。自然的想法就是當粘性趨于零時，帶粘性的對流-擴散問題的解在某意義下趨于無粘性問題（ 0 . 1 . 1 ）的解，這就是正則化方法。另一辦法從離散（數值）角度上研究僅有對流項的守恆律（ 0 . 1 . 1 ） ，如構造它的差分格式，甚至更一般的有限體積格式，有限元及譜方法等，從這些格式構造近似解（常表現為分片多項式）來逼近原守恆律的解。
  17. Convection diffusion equation

    對流擴散方程
  18. Domain decomposition characteristics difference schemes for convection diffusion parabolic problems

    對流擴散方程區域分裂特徵差分方法
  19. A multistep finite volume element scheme along characteristics for nonlinear convection diffusion problems

    非線性對流擴散方程沿特徵線的多步有限體積元格式
  20. The essentially non - oscillatory characteristic difference method for convection - diffusion equation

    構造對流擴散方程高精度非均勻網格格式的指數變換方法
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