航空工程进展2012，Vol.3Issue(3)：274-278,5.
流体网络节点残量修正算法的改进
Improvement of Fluid Network Node Residue Correction Algorithm
摘要
Abstract
In order to enhance stability and convergence of solving fluid network, the network node residue cor- rection algorithm is investigated. Based on theory analysis, a principle of setting initial values for network is put forward which enables the algorithm to converge in large scale. Implicit trapezoid iteration formula is advanced on the foundation of node residue correction explicit expression, making maximum iterative step expand a lot. One certain aero engine secondary air system is computed with the improved algorithm above as an example, whose pressure distribution, temperature distribution and mass f~ow distribution are obtained. The computation process shows that calculation oscillation is greatly reduced and convergence speed is improved by more than 80% compared with the explicit iteration. It indicates that the improved algorithm ameliorates stability and con- vergence of solving fluid networks effectively.关键词
流体网络/节点残量修正/收敛性和稳定性/赋值规律/隐式梯形迭代Key words
fluid network/node residue correction/convergence and stability/principle of setting initial values/implicit trapezoid iteration分类
航空航天引用本文复制引用
张婷婷,刘振侠,吕亚国..流体网络节点残量修正算法的改进[J].航空工程进展,2012,3(3):274-278,5.基金项目
西北工业大学科技创新基金 （）
