Computational accuracy of equivalent magnetic charge method is high , but its calculation is complicated 等效磁荷法計算精度高,但計算過程相對復(fù)雜。
( 4 ) to raise the computational accuracy and efficiency , we have designed a self - adaptive space grid that can guarantee mass conservation and energy conservation , and have also developed the techniques for the time stepsize automatically varying ( 4 )設(shè)計了保持質(zhì)量和能量守恒的自適應(yīng)空間網(wǎng)格,發(fā)展了自動改變時間步長的技術(shù),使之能夠更好地保證計算精度,提高計算效率。
The main goal of this paper is to make a thorough research for the nine - point difference scheme , make clear its advantages and disadvantages , and improve it in view to its main disadvantages to raise the computational accuracy , speed and efficiency 本文致力于對九點差分格式作較為徹底的研究,弄清其優(yōu)、缺點,并針對其主要缺點作出改進(jìn),以進(jìn)一步提高整個計算的精度、速度和效率。
Equivalent circuit method is usually used before . this method has apparent defect , that is , the ignorance of higher order mode effect , which can greatly affect the computational accuracy . in cases that require high accuracy , this method is unusable 以前一般采用等效電路法分析和設(shè)計脊波導(dǎo)元器件;這種方法的缺點比較明顯,那就是對高次模的影響不加考慮,使得計算精度大受影響,在較高要求的場合甚至完全不可用。
Aiming at higher computational accuracy , the unstructured hybrid mesh and the distributed parallel computation are used in 3d complex flow field simulation , the combination of these two techniques often causes difficulties in data structure and sub - domain definition because of the non - unification of mesh elements 在三維復(fù)雜外形的流場計算中,為了得到較高的計算效率及保證數(shù)值模擬的準(zhǔn)確性,經(jīng)常要采用混合網(wǎng)格及并行計算技術(shù)。