Different solvers are employed to investigate the new implicit algorithm 采用不同求解方法對(duì)該方法進(jìn)行了試算。
Case studies demonstrated the performance of the proposed implicit algorithm 計(jì)算表明了本文的方法性能良好,計(jì)算速度比顯式方法有明顯改進(jìn)。
An implicit algorithm suitable for solving viscous flow problems on unstructured mixed element grids 一種隱式時(shí)間算法在非結(jié)構(gòu)混合網(wǎng)格粘性流動(dòng)計(jì)算中的應(yīng)用
The proposed implicit algorithm is based on update of interface in order to track flow front for each time step 為了改善隱式方法的迭代過程,在本文中提出了一種基于界面更新的隱式方法。
Our researches in this paper give the solution to the problems above . and we successfully finish the aerodynamic optimization . the advances achieved in this paper are as follows : solving the euler equation with lu - sgs implicit algorithm on unstructured grids , mesh reordering will bring on imbalance 本文在研究過程中,對(duì)上述問題提出了相應(yīng)的解決方法,并研制了相應(yīng)的計(jì)算程序,使得結(jié)合模擬退火算法與正交分解的優(yōu)化設(shè)計(jì)過程獲得了成功。
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(zhì)接收函數(shù)的波形反演研究的基礎(chǔ)上,本文系統(tǒng)闡述了非均勻介質(zhì)中彈性波傳播數(shù)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(cuò)網(wǎng)格法,首次將多重網(wǎng)格算法應(yīng)用于彈性波方程的數(shù)值模擬問題,克服了交錯(cuò)網(wǎng)格法和顯式差分法穩(wěn)定性差,以及隱式差分法計(jì)算效率低的缺點(diǎn),大大提高了彈性波數(shù)值模擬的精度、穩(wěn)定性和計(jì)算效率。