摘要
在微幅简谐振荡的假设下,对计算平面内非定常N-S方程进行了线比,并在MacCormark于1980年提出的半隐格式的基础上,发展了一种适用于求解计算平面内线化N-S方程的差分格式.用该差分格式求解计算平面内的线化N-S方程时,可以避免求解五对角方程;且时间步长可以取得较大,计算效率高.
The unsteaty N-S equations in a computational plane have been linearized by adoptingthe assumption that the oscillating is harmonic. To sovle the linearized N-S equations. a newdifference scheme has been developed. There is no need to sovle five-diagonal equations byusing the new scheme, the computational time step length can be increased and the computa tion efficiency is high.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
1994年第1期121-126,共6页
Journal of Beijing University of Aeronautics and Astronautics
基金
航空科学基金
关键词
非定常流动
差分方程
振荡
non-steady flow
difference equations
oscillations
numerical simulation
computational method: N-S equations
linearization