The similar structure of pressure distribution in the homogenous reservoir 均質(zhì)油氣藏試井分析解的相似結(jié)構(gòu)
Small deformation analytical solution of spatial curved - rods in natural coordinate system 空間曲桿小變形問(wèn)題自然標(biāo)架的矩陣分析解
It has a higher precision and clear physics images , can even be applied to test and measure the applicability and precision of some difference methods 特征線方法的物理圖像清晰,數(shù)值計(jì)算精度高,在某些特殊情況下甚至可以得到封閉的分析解。
And for the validity , practicability and dependability of this soft system , this paper uses many instances to validate three kinds of solutions 并且本文還使用了眾多尺寸鏈分析計(jì)算實(shí)例來(lái)驗(yàn)證使用這三種方案設(shè)計(jì)的計(jì)算機(jī)輔助尺寸鏈分析解算軟件的正確性、實(shí)用性和可靠性。
The formulation of slab - column system flexure and internal force in elasticity was established according to the known condition of boundary and stress , and the elasticity formulation using the factor of relativity coordinate was simplified 摘要根據(jù)已知的邊界和受力條件,建立無(wú)梁樓蓋撓度和內(nèi)力的彈性分析解,并利用相對(duì)坐標(biāo)引入?yún)?shù),對(duì)此彈性解進(jìn)針化簡(jiǎn)。
Based on the analysis of solving ambiguity , the thesis presents several algorithms for estimating doa and an algorithm for estimating frequency by using methods of subspace parameter estimation under sub - nyquist spatio - temporal sampling condition 論文在分析解模糊思想的基礎(chǔ)上,給出空時(shí)欠采樣下運(yùn)用子空間類參數(shù)估計(jì)方法估計(jì)波達(dá)方向的幾種算法和一種頻率估計(jì)算法,并從性能上進(jìn)行了比較和分析。
Using film visual & audio language for reference and according to animation characteristic and aesthetics and visual psychology to analyze those elements which can make atmosphere shot great , and relevant knowledge . ( e . g 本文通過(guò)從理論上借鑒電影視聽語(yǔ)言語(yǔ)法,結(jié)合動(dòng)畫自身的特性,根據(jù)視覺(jué)心理學(xué)和美學(xué)的規(guī)律,分析解構(gòu)影視動(dòng)畫中氣氛鏡頭的造型元素及其知識(shí)結(jié)構(gòu)(如光影、色彩、鏡頭語(yǔ)言、音畫關(guān)系、音效、剪輯等) 。
In the model the film thickness in the passage was obtained at first using two phase flow theory ; then , similar analysis solution of concentration distribution of the pollutant in liquid phase and biofilm was obtained through mass component equation of pollutant in gas - liquid phases combined with the biochemical kinetic equation of mass transfer in biofilm and dismission of oxygen limited ; at last , the distribution of pollutant along the filter height and the waste gas purification efficiency were obtained 該模型首先運(yùn)用兩相流理論獲得了通道內(nèi)液膜厚度,然后通過(guò)污染物在氣相、液相的質(zhì)量組分方程,結(jié)合生物膜內(nèi)的傳質(zhì)與不?慮氧限制的生化反應(yīng)動(dòng)力學(xué)方程,獲得了污染物在液相和生物膜中濃度分布的近似分析解,最終得到污染物在氣相中沿塔高的濃度分布及廢氣凈化效率。
In this paper the basic principle of the method of characteristics is described , and is constructed an explicit scheme for dam break simulation of one - dimensional dam instant all break waves flow of a low dam with rectangle section and a huge dam with trapezia section , and of two - dimensional dam instant part break waves flow with simplest space operator splitting 本文模擬了一維矩形斷面低壩和梯形斷面巨型壩瞬間全潰的洪水波演進(jìn)過(guò)程,給出了與分析解的比較,并結(jié)合算子分裂的特征線法對(duì)二維瞬間部分潰壩時(shí)洪水波的演進(jìn)過(guò)程進(jìn)行了數(shù)值模擬。
The first one : fitting together ultimate values of every dimensions in one dimension - chain one by one , educing many equations by itself , calculating results , and comparing these results of close dimension to find maximal and minimal values . the second one : projecting all dimensions on two preestablished axis , then providing the solutions to analyze whether every projected dimensions is increscent or decreasing , and synthesize the effect of every projected dimensions to close dimension , educing many equations by itself , at last calculating the result of close dimension . the third one : according to monte carlo analysis , getting every dimensions " values from every dimensions " tolerances at random time after time , simulating the actual circumstances of mass production using these dimensions , and calculating reasonable results of close dimension economically 鑒于這類系統(tǒng)在各大中小型企業(yè)的廣泛應(yīng)用與相對(duì)滯后的研究水平,本文提出了三種新的能切實(shí)地解決目前尺寸鏈計(jì)算機(jī)輔助分析解算中存在的各種難題的設(shè)計(jì)方案,第一種方案將尺寸鏈中各組成環(huán)能取的極值組合起來(lái),自動(dòng)列方程組,求解每個(gè)組合情況下的封閉環(huán)尺寸,最后比較這些結(jié)果,得出封閉環(huán)的最大最小值;第二種方案將尺寸鏈各組成環(huán)向預(yù)先設(shè)定好的兩個(gè)方向投影,之后再分析各尺寸環(huán)投影分量的增減性,并且提供了組成環(huán)兩個(gè)方向上的投影分量增減性不一的復(fù)雜情況下的解決辦法,綜合組成環(huán)各投影分量的增減性,然后自動(dòng)列出方程組,最后根據(jù)各組成環(huán)的投影分量以及所列的方程組來(lái)確定尺寸鏈封閉環(huán)的尺寸;第三種方案以蒙特卡洛法為原理,在尺寸鏈各組成環(huán)的取值范圍內(nèi)使用計(jì)算機(jī)產(chǎn)生大量隨機(jī)數(shù),模擬實(shí)際大批量生產(chǎn)中的零件尺寸分布情況,以更經(jīng)濟(jì)更合理的方式分析、計(jì)算封閉環(huán)尺寸。