irregular grid造句
例句與造句
- In this paper , by using monte carlo method with irregular grid random walk in time - space domain the problem of mass concrete transient temperature field was solved
摘要利用求偏微分方程的蒙特卡羅算法,通過在時(shí)空域中不規(guī)則網(wǎng)格隨機(jī)游動(dòng)來求解大體積混凝土不穩(wěn)定溫度場(chǎng)。 - Second , a parallel adaptive ray - casting algorithm for graphic rendering of cfi is developed . in the computational model of cfi , the line - of - sight integration is difficult to obtain for 3d complicated flow field , because curvilinear grids , multizone curvilinear grids , and other irregular grids that are commonly used in computational fluid dynamics ( cfd ) present interesting challenges , such as the complex shapes of cell regions defined by grid points ; the wide variation in the sizes of cells in different regions of the grid ; and the intersecting or overlapping nature of multi - grids . the parallel adaptive ray - casting algorithm is extremely efficient to solve these problems
并行自適應(yīng)光線投射法繼承了光線投射法適合于任何形式網(wǎng)格的優(yōu)點(diǎn);光線與計(jì)算網(wǎng)格的交點(diǎn)自適應(yīng)地反映了原來網(wǎng)格點(diǎn)物理量的分布,能夠與數(shù)值計(jì)算的精度保持一致;圖像平面的自適應(yīng)算法使我們不必從每一個(gè)像素發(fā)出射線,既提高了光線投射法的計(jì)算效率,同時(shí)又保證重采樣后激波這樣的高頻信息不會(huì)損失;將并行處理技術(shù)引入計(jì)算光學(xué)流動(dòng)圖像生成過程,解決了大規(guī)模數(shù)值模擬結(jié)果的處理對(duì)計(jì)算速度和內(nèi)存容量的需求。 - 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(shí)現(xiàn)任意非規(guī)則網(wǎng)格上的顯式差分計(jì)算,因此該方法在保持了傳統(tǒng)的矩形網(wǎng)格差分算法簡(jiǎn)單、高效特點(diǎn)的同時(shí),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(jié)果的精度。 - Theoretical analysis and numerical experiments show that the improved nine - point scheme not only has completely overcome the second drawback mentioned above that the original nine - point scheme can not apply to the parabolic problem with diffusion coefficient drastically varying , but also has partly improved the applicability of the scheme when performed over irregular grids
( 2 )針對(duì)九點(diǎn)格式的上述缺點(diǎn)提出了改進(jìn)方案。改進(jìn)后的九點(diǎn)格式完全克服了原格式不適用于熱傳導(dǎo)系數(shù)劇烈變化的拋物問題的缺點(diǎn),同時(shí)部分改善了該格式對(duì)不規(guī)則網(wǎng)格的適應(yīng)性問題。 - It's difficult to find irregular grid in a sentence. 用irregular grid造句挺難的