顯式網格 的英文怎麼說
中文拼音 [xiǎnshìwǎnggé]
顯式網格
英文
network for the explicit method-
As an example, the implementation of the laplace equation with the gridless method has been presented at first and the resulting large scale matrix equations are solved by gmres algorithm. the numerical simulations of the flows over a cylinder are tested successfully with clouds of different scales, which shows the " cloud " effects on the computational accuracy
本文先以代表定常不可壓位勢繞流的laplace方程為例,研究了laplace方程的無網格離散形式,並運用gmres高效演算法對其快速求解,數值模擬了典型的圓柱繞流;並通過不同點雲尺度的數值模擬,顯示出點雲尺度對計算精度的影響。Specifies the gridline styles for controls that display items in a table structure
為在表格結構中顯示項的控制項指定網格線樣式。The explicit finite element method ( fem ) based on the varying time - step was selected to analyse the dynamic roll - pass process ; the nodes on the leading face of the steady - state elements set was extracted and projected onto a plane to give the required mesh, also called the origin mesh ; the implicit fem was selected to analyses the inter - pass transient thermal process ; a geometric part from the mesh was generated and meshed by using the quadrilateral elements, a heat transfer analysis was selected to transfer the node temperature data ; a new model was created by using hexahedral elements, mapping the node temperature and the equivalent plastic strain on the integration points
利用基於變步長中心差分格式的顯式積分方法分析瞬態軋制過程;提取穩態單元集節點形成截面網格;利用隱式積分方法分析軋制道次間隙瞬態溫度場;對型鋼斷面進行平面四邊形網格劃分並映射節點溫度數據;利用六面體單元構建有限元分析模型,映射單元節點的溫度、積分點的等效塑性應變,進行數值分析。In this part, the first work is pretreatment of a numerical model, including creating calculating grids automatically, improvement of the linear boundary technique and so on. the second work is to estimate the siltation of a basin or channel by liu ' s equation. the third work is to build an edbms ( engineering data base management system ) for the result of mathematical model
其中主要的工作是:其中主要的工作一是數學模型的前處理,計算網格自動生成,線邊界法的優化;二是應用劉家駒公式在長江口深水航道治理工程地理信息系統的支持下實現港池、航槽開挖的實時回淤估算;三是將計算成果形成gis管理和支持下的工程數據庫系統( engineeringdatabasemanagementsystem ) ,同時嘗試解決時間序列數據如地形沖淤變化,潮位、流速過程的分析、查詢和顯示問題,並實現實時、互動的動態演示及三維可視化。Three finite - difference methods, i. e., stagger grid, implicit and explicit algorithms, are analyzed in detail. multi - grid algorithm is firstly introduced in elastic wave simulation, to solve for the stability problem inherent in stagger grid and implicit algorithm, also for the efficiency problem inherent in explicit algorithm, and the precision, stability and efficiency for simulation of elastic wave arc increased by multi - grid method. phase - delay method is provided to effectively absorb boundary reflection and increase efficiency for wave motion simulation, based on phase delay and amplitude decaying features along wave propagation
在水平分層介質接收函數的波形反演研究的基礎上,本文系統闡述了非均勻介質中彈性波傳播數值模擬常用的三種有限差分方法:顯式差分、隱式差分和交錯網格法,首次將多重網格演算法應用於彈性波方程的數值模擬問題,克服了交錯網格法和顯式差分法穩定性差,以及隱式差分法計算效率低的缺點,大大提高了彈性波數值模擬的精度、穩定性和計算效率。As tropical cyclones can cover distances of hundreds of kilometres, the area covered by the open coast model has to be large and the grids used in the model correspondingly coarse
由於熱帶氣旋的影響范圍可以廣達數百公里,開闊海岸風暴潮模式的覆蓋范圍亦要相應擴大以致模式內網格點間的距離大了,一些細微的海岸線變化如港灣和河口就不能在這網格上顯示出來。As tropical cyclones can cover distances of hundreds of kilometres, the area covered by the open coast model has to be large and the grids used in the model correspondingly coarse. the disadvantage is that small variations in coastlines such as bays and inlets cannot be resolved
由於熱帶氣旋的影響范圍可以廣達數百公里,開闊海岸風暴潮模式的覆蓋范圍亦要相應擴大以致模式內網格點間的距離大了,一些細微的海岸線變化如港灣和河口就不能在這網格上顯示出來。As an example of developing a custom web parts control, you could create a control to provide any of the features provided by other asp. net server controls that might be useful to package as a personalizable web parts control : calendars, lists, financial information, news, calculators, rich text controls for updating content, editable grids that connect to databases, charts that dynamically update their displays, or weather and travel information
作為一個開發自定義web部件控制項的示例,可以創建一個控制項以提供其他asp . net服務器控制項所提供的任何功能,這可能對打包為可個性化設置的web部件控制項十分有用,這樣的控制項包括:日歷、列表、財務信息、新聞、計算器、用於更新內容的多格式文本控制項、連接到數據庫的可編輯網格、動態更新顯示的圖表或天氣和旅行信息。A new finite - difference method is developed for seismic modeling and reverse - time migration based upon the voronoi cell construction on irregular grids. curved velocity boundaries and irregular earth surface can be accurately represented using the irregular grid implementation. therefore the modeled and migrated results can be more accurate, and meanwhile, the efficiency is still preserved using an explicit finite - difference scheme
本文的方法可以實現任意非規則網格上的顯式差分計算,因此該方法在保持了傳統的矩形網格差分演算法簡單、高效特點的同時,又能精確地描述彎曲界面和起伏地表,提高了有限差分地震模擬和偏移結果的精度。We also compute naca0012 airfoil and certain three - foil flow field separately with explicit 4 - step runge - kutta scheme and the implicit lu - sgs scheme and results show the latter is much more efficient. in the end, the capability of the algorithm to deal with multi - bodies in relative movements is demonstrated by a dropping drank problem. it turns out that the unstructured overset grid is valuable and promising in practical application
同時為了驗證隱式lu - sgs格式的收斂效果,我們對基於單塊網格的naca0012翼型與某三段翼型在不同的來流條件下,分別用帶隱式的lu - sgs格式與顯式的四步runge - kutta格式的解算器進行了數值模擬。Then author discusses the writing and debugging of the program. the ventilation of a typical chamber with a stable fixed pollutant emission is studied by founding different boundary conditions ( here, they are the both up inlet and outlet on opposite side, the up - inlet and down - outlet on opposite side and the up - inlet and down - outlet on the same side. ). and accordingly dividing different grids. using the program, the velocity values and the pollution concentration values of the chamber are worked out
對所研究的具有單個固定污染源的典型房間的室內通風,通過對異側上送上排、上送下排以及同側上送下排等幾種方式下,建立相應的邊界條件並劃分網格,運用編制的程序對它們進行數值模擬,所得的計算結果再用excel軟體分別進行顯示與處理,得到相應條件下的流場、濃度場,而後再算出相應的通風效率。In this paper, a class of the second order accurate explicit gauss schemes with staggered grids for the computation of solutions of hyperbolic conservation laws are presented, the advantages of these schemes are : riemann solver - free, faster and programming is much simple, no complete set of eigenvectors is needed and hence weakly hyperbolic system can be solved. in one dimensional case, these schemes are and total variation diminishing and convergence under the restriction of cfl condition, the convergence rate is the first order, and a pointwise error bound is presented
本文在交錯網格的情況下,利用gauss型求積公式構造了一類求解雙曲守恆律的時空一致二階顯式gauss型差分格式,這類gauss型差分格式,具有不需要求解riemann問題、計算簡單、工作量少、編程簡便等優美特點,而且由於這類格式在應用於求解方程組的時候,不需要對方程組進行特徵分解,因此可應用於求解非嚴格的雙曲守恆律方程組。Only clouds of points instead of grids are distributed over the computational domain and the spatial derivatives are estimated using a least - square curve fit on local clouds of points. the paper gives discrete form for euler equations on base of gridless method, and adopts five steps runge - kutta scheme for time - marching. the numerical results have been obtained for the 2 - d flows over airfoils or multi - element airfoils using the method presented
本文首先對無粘euler方程進行無網格離散,並運用顯式runge - kutta格式推進求解,成功地數值模擬了二維單段和多段翼型的繞流;在此成功的基礎上通過在euler方程的右端加入粘性項,使求解方程變為層流navier ? stokes方程,得到了翼型繞流,數值結果顯示出粘性的影響。In a three - dimensional ocean model with curvilinear coordinates horizontally and a coordinate vertically, the adapted grids at a layer for interpolation in the eulerian - lagrangian method ( elm ) is unreasonable over steep topography, because the vertical distance between the adjacent grids in the same a layer is too large
摘要在水平曲線坐標和垂向坐標的三維海洋模式下,歐拉拉格朗日方法的插值如果在-面相鄰網格之間進行,那麼在水深變化劇烈處,由於-面相鄰網格之間的垂向距離較大,插值依據會顯得較不合理。A data viewer can display data in a grid, histogram, scatter plot, or column chart
數據查看器可以網格、直方圖、散點圖或柱形圖的方式顯示數據。The bed resistance is obtained by express of the single - fluid model for debris flow
數學模型採用一種基於三角網格的顯式差分格式?有限節點法。The results pane uses optimistic concurrency control so the grid shows a copy of the data in the database rather than an entirely live view
結果窗格使用開放式並發控制,因此網格顯示的是數據庫中的數據副本而不是完全實時的視圖。In consideration of computation exactness and cost, the unstructured grid, rng k - e turbulence model, renold - averaged n - s equations and second order upwind scheme were used to solve 3d turbulence flows with and without secondary combustion of a experimental strutjet rbcc in ejecting mode
在綜合權衡精度和速度的基礎上選取非結構網格技術、 rngk -湍流模型、雷諾平均n ? s方程、二階上風顯式離散格式求解並研究了支板式rbcc引射模態三維燃燒流場。In this thesis a numerical model to solve the planear 2 - d depth - integrated flow ( dif ) has been established with irregular body - fitted mesh finite volume method and explicit maccormack predictor - corrector method and applied to the study of damming caused by a bridge pier under 14 working conditions varied with the combination of different pier shape. flow rate and contraction ratio
本論文採用非規則貼體網格有限體積法和顯式maccormack預測-校正法求解平面二維水深積分方程,對明渠水流運動的數值模擬方法進行了研究,並且應用該數值模型計算了14種不同的橋墩體型、來流、收縮比的組合工況下的橋墩壅水問題。The further extension of the method for solving euler ' s equations is then presented with five - stage runge - kutta time - stepping scheme, studying the artificial dissipation model of unstructured mesh method
針對守恆型euler方程組的無網格離散形式,借鑒非結構網格方法附加耗散模型,採用五步runge - kutta顯式時間推進格式求解。分享友人