混合元 的英文怎麼說

中文拼音 [húngěyuán]
混合元 英文
mixed element
  • 混 : 混形容詞1. （渾濁） muddy; turbid2. （糊塗; 不明事理） foolish; stupid
  • 合 : 合量詞（容量單位） ge, a unit of dry measure for grain （=1 decilitre）
  • 混合 : （攙雜在一起） mix; blend; mingle; admix; mixture; mix up; interfusion; commixture; blending; cre...
  1. Petrov - galerkin least squares mixed element method for the stationary incompressible magnetohydrodynamics

    最小二乘混合元方法
  2. 1 milner, f. a., and park, e. j., a mixed finite element method for a strongly nonlinear second - order elliptic problem, math. comp., 1995, 64 : 973 988

    2陳煥禎，二階擬線性橢圓問題混合元方法的最大模估計，高等學校計算數學學報，待發表
  3. An upwind - mixed finite element method for compressible miscible displacement

    可壓可溶兩相驅動問題的迎風混合元方法
  4. In this paper, a crank - nicolson mixed element method, a nonlinear galerkin mixed element method for the non stationary conduction - convection problems time second order accuracy fully discrete formats and a two - level mixed element method with backtracing for the stationary conduction - convection problems are presented and analyed, respectively, an error analysis are provided for the crank - nicolson method of time discretization applied to spatially discrete galerkin mixed element approximations of the nonstationary conduction - convection problems

    本文分別給出了非定常的熱傳導-對流問題的crank - nicolson混合元法時間二階精度全離散格式，非線性galerkin混合元法時間二階精度全離散格式以及定常的熱傳導-對流問題回溯二重水平法。討論了時間上的crank - nicolson離散方法應用於非定常的熱傳導-對流問題的空間離散的galerkin混合元近似。
  5. Superconvergence of a mixed finite element approximation for stokes problem

    問題一種混合元近似的超收斂
  6. Expanded mixed finite element approximations of the parabolic problems are considered. error estimates for the scalar unknwon, its gradient and its flux in l2 - norm are obtained for this new mixed formulation

    通過數值分析進一步說明擴展混合元方法是穩定的，並得到了未知函數、未知函數的梯度和流體流量的l ~ 2 -誤差估計。
  7. Pian presented mix fem and hybrid fem in 1964. for its good capability in solving the irregular elements problems, incompressible material problems, and high precision in stress and strain results, the research of mix and hybrid fem is in the ascendant

    Pian於1964年基於hu - washizu變分原理提出了雜交元和混合元方法，由於該方法在單元畸變、不可壓縮性和應力應變求解方面表現出優異的性能，目前的研究正方興未艾。
  8. In chapter one, we propose a new mixed method called characteristics mixed finite element method for a convection - dominated diffusion problems with small parameter e : we handle the convection part whth backward difference scheme along the characteristics, obtain much smaller time - trunction errors and avoid numerical dispersion on the front of the peak curve of the flow : we use a lowest order mixed finite element method to deal with the diffusion part, so this scheme can approximate the unknow function and its following vector with high accuracy at the same time

    第一章中我們對小參數對流占優擴散問題提出了新的數值方法? ?特徵混合有限元方法，即對方程的對流部分採用沿特徵線的後退差分格式求解，以保證較小的截斷誤差限並避免了在流動的鋒線前沿數值彌散現象的出現；對流動的擴散部分採用最低次混合元方法求解，以保證格式對未知函數及伴隨向量的同時高精度逼近。由於該方法中檢驗函數可取分片常數，此格式在某種意義上具有局部守恆性質。
  9. The dynamic mixed finite element methods for incompressible miscible displacement in porous media

    多孔介質驅動問題的混合元最小二乘特徵有限元方法及其收斂分析
  10. In chapter two, we consider the expanded mixed finite element method for the 2nd order parabolic problems this method expands the standard mixed formulation in the sense that three variable are explixitly treated : the scalar unknwon, its gradient and its flux. based on this fomulation

    該方法是在傳統混合元基礎上的一種推廣，它能同時逼近未知函數、未知函數的梯度和流體的流量，較好的模擬了帶有混合型邊界條件的二階拋物問題。
  11. In this paper, we consider mixed finit element methods for the initial - boundary value problems of two order hyperbolic equations and linear integro - differential equations of parabolic type, obtain the error estimates of the discrete schemes for this two kinds of problems. in chapter one, we consider the expanded mixed finite element methods for the followling 2nd order hyperbolic problems this method expands the standard mixed formulation in the sense that three variable are explixitly treated : the scalar unknwon, its gradient and its flux

    本文討論了二階雙曲方程和線性拋物型積分微分方程方程初邊值問題的混合有限元方法，得到了這兩類問題混合有限元離散格式的誤差估計。第一章討論二階雙曲初邊值問題的擴展混合元方法。該方法能同時逼近未知函數、未知函數的梯度和流體的流量，較好的模擬了帶有混合型邊界條件的二階雙曲問題。
  12. The new method is a combination of characteristic approximation to handle the convection part, to ensure the high stability of the method in approximating the sharp fronts and reduce the numerical diffusion, a smaller time truncation is gained at the same time, and a mixed finite element spatial approximation to deal with the diffusion part, the sealer unknown and the adjoint vector function are approximated optimally and simultaneously

    此方法即為對方程的對流項沿流體流動的方向即特徵方向進行離散，從而保證格式在流動鋒線前沿逼近的高穩定性，消除了數值彌散現象，並得到了較小的時間截斷誤差；另一方面，對方程的擴散項採用混合元離散，可同時高精度逼近未知函數及其伴隨向量函數，理論分析表明，此方法是穩定的，具有最優的l ~ 2逼近精度。
  13. The galerkin / petrov - least squares - type mixed finite element method and the nonlinear galerkin / petrov - least squares mixed element method so that they are stable for any combination of discrete finite element spaces without requiring the babuska - brezzi stability condition

    Galerkin / petrov最小二乘混合元法和非線性galerkin / petrov最小二乘混合元法使得有限元空間之間的組合無需滿足離散的babuka - brezzi穩定性條件，從而使得它們的有限元空間可以任意選擇。
  14. Error eestimates for mixed finite element methods for hyperbolic type integro - differential equation

    雙曲型積分微分方程混合元法的誤差估計
  15. Petrov - galerkin least squares mixed element method for the stationary

    最小二乘混合元方法
  16. Anisotropic mixed element analysis of the parabolic equation

    拋物型方程的各向異性混合元分析
  17. Convergence of simplified and stabilized mixed element formats based on bubble function for the stokes problem

    問題基於泡函數的簡化的穩定化混合元格式的收斂性
  18. A fully - discrete splitting positive definite mixed element scheme finite for compressible miscible displacement in porous media

    多孔介質中可壓縮驅動問題的全離散分裂正定混合元方法
  19. The existence and the convergence of the fully discrete format of nonlinear galerkin mixed element method with time second order accuracy for the non stationary conduction - convection problems are showen

    給出了熱傳導-對流問題非線性galerkin全離散混合元解的存在性和收斂性。
  20. First, we present the equivalent variatial formulations of the least - squares mixed method and prove the existence and uniques for the weak problems. on the basis of l2 - projections and raviart - thomas projections, we obtain the superconvergence of the least - squares mixed finite element approx - imations on uniform triangulations, where triangular mixed finite elements of the lowest order raviart - thomas spaces are used to approximate the flux p. in the second chapter, we briefly recall the standard and mixed finite methods for second order elliptic problems, and introduce a modified least - squares mixed method

    作者首先導出了最小二乘混合元方法的等價變分形式，並且證明了變分問題廣義解的存在唯一性；在此基礎上，我們採用強一致三角形剖分，選取最低階的raviar - thomas空間對未知函數的通量進行逼近，利用l ~ 2投影和raviart - thomas投影，得到了插值投影和最小二乘混合元解之間的超收斂結果。
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