advective 中文意思是什麼

advective 解釋
平聊
  1. The solution algorithm involves tracing the characteristic lines backwards in time from a upwind element of an interior point. two advanced mehtods, quasi - consistence and consistence hexahedral element method, for three - dimensional advective problem are developed. and comparison of these two methods with linear interpolating function method is implemented

    當re 400時，流動明顯地具有二維性； re 800時，流動具有一定程度的三維性，而且出現了次迴流區； re 1000時，流動則具有明顯的三維性。
  2. ( 4 ) according to the 2 - d advective - dispersive equation of pore medium and combining the result of experiment, the difference between experiment and calculation was located by macroscopical analysis. a new mathematical model suiting to fractured medium was deduced from revised pore medium model. the correction and practicability were verified by the result of experiment

    （ 4 ）依照孔隙介質二維溶質對流彌散方程，結合實驗所取得的成果，進行宏觀比較分析，找出實驗與計算的差距，然後對孔隙介質模型作進一步的修正，推導出了適合單裂隙巖體二維溶質運移的數學方程，並通過具體的實驗結果驗證了模型的正確性和實用性。
  3. Advective eddy diffusion

    平流渦旋擴散
  4. In the numerical solution algorithm, the method of characteristics, analytic method and galerkin finite element method ( galerkin - fem ) can be chosen to solve the advective equation, diffusion equations, reaction ( source / sink ) equations, propagation equations and pressure poisson equation, respectively. the developed new algorithm has been verified using analytical solution of circular conduit flow in a reynolds number range of 100 < re < 1 000 and experimental data of the laminar flow over a backward - step facing step. the flow properties are well characterized by this three - dimensional numerical model

    本論文在評述三維粘性流動數學模型已有研究成果的基礎上，著重在數值計算方法的選擇和定解條件的給定對數學模型計算結果的影響進行了研究，並首次提出了求解三維純對流方程的高精度的擬協調單元法，建立了三維低雷諾數re流動的數學模型，並在圓管流動、臺階突擴矩形管道流動中得到驗證和應用。
  5. For the pure 3d advective problem, solution can be found by the characteristics method

    在驗證計算的同時，分析了不同re流動特性的變化。
  6. Research has demonstrated that advective flow, which originates near the surface of the ocean where suspended particulate matter accumulates, transports some of that matter and water to the vents

    研究顯示大洋表面附近形成的對流潮將聚集的浮遊顆粒物質和水輸送到噴口處。
  7. ( 5 ) several group experimental result of solute transport in fractured medium was analysed in different direction. an experience formula of nacl solution was summarized, which changed in different position. the coefficient of advective - dispersive was deduced by means of back analysis based on the experimental results, which suited to solute transport in a single fracture of rock

    （ 5 ）通過裂隙中溶質運移的多組實驗結果進行橫、縱向的比較分析，總結出了nacl溶液濃度沿程變化的經驗公式；結合實驗結果針對所推導出的數學模型擬合出適合單裂隙巖體的溶質運移彌散系數。
  8. 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。
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