An implicit scheme is much more efficient . 隱式格式是一種很有效的格式。
A mixed semi - implicit scheme based on incremental unknowns 基于增量未知元的混合半隱格式
Alternating direction implicit scheme , adi scheme 交替方向隱格式
The parallel alternating difference implicit scheme for the dispersive equation 色散方程的一類新的并行交替分段隱格式
Semi - implicit scheme 半隱格式
Multigrid method based on the high accuracy full implicit scheme of the convection diffusion equation 二維對(duì)流擴(kuò)散方程的高精度全隱式多重網(wǎng)格方法
On stability and error estimaes for a class of weighted semi - implicit schemes of the incremental unknowns methods 一類加權(quán)半隱格式增量未知元方法的穩(wěn)定性和誤差估計(jì)
Firstly , a 1 - d flow numerical model based on the preissmann scheme , a 1 - d rivernet flow numerical model based on the direct solution method and a 2 - d tidal model based on the implicit scheme of finite difference method are programmed 本文首先建立了基于preissmann算法的一維水流模型、基于直接解法的平原河網(wǎng)模型和基于有限節(jié)點(diǎn)法的平面二維水力模型,在對(duì)各模型的算法進(jìn)行推導(dǎo)的基礎(chǔ)上自行開發(fā)了計(jì)算程序。
Using the approximation form of lumped mass matrix instead of the mass matrix in finite element discretization in space , backward differencing scheme in time , an implicit computational scheme is yielded , it proved the convergence estimate for this implicit scheme 對(duì)有限元離散中引起較大誤差的質(zhì)量矩陣,采用了近似形式的集總質(zhì)量矩陣來代替,時(shí)間項(xiàng)采用向后差分,得到了一個(gè)隱式的計(jì)算格式,證明了計(jì)算格式的收斂性及其收斂速度估計(jì)。
In order to advance the sst turbulence equations at the same rate as the flow equations , a point - implicit scheme is used . the convection term in turbulence equations is discretized using first - order upwinding scheme to ensure more stability in time integration and the positivity of the turbulent variables Sst湍流方程求解時(shí),使用點(diǎn)隱式格式進(jìn)行時(shí)間推進(jìn)從而解除了由于源項(xiàng)存在所引起的時(shí)間步長(zhǎng)的限制,保證湍流方程和流動(dòng)方程同步推進(jìn)時(shí)的穩(wěn)定性。