电脑知识与技术
電腦知識與技術
전뇌지식여기술
Computer Knowledge and Technology
2015年
20期
155-157,215
,共4页
对流占优扩散方程%有限差分法%迎风%萨马尔斯基%指数
對流佔優擴散方程%有限差分法%迎風%薩馬爾斯基%指數
대류점우확산방정%유한차분법%영풍%살마이사기%지수
convection-dominated diffusion equation%finite difference method%upwind%samarskii%exponential
对流占优扩散方程是描述对流和扩散过程的模型方程.对于求解对流占优扩散方程的几种差分格式进行分析,并编制了MATLAB程序.使用算例进行了数值试验,差分格式消除了伪数值振荡,实现了对流占优扩散方程的求解,并比较了几种解法的优劣.
對流佔優擴散方程是描述對流和擴散過程的模型方程.對于求解對流佔優擴散方程的幾種差分格式進行分析,併編製瞭MATLAB程序.使用算例進行瞭數值試驗,差分格式消除瞭偽數值振盪,實現瞭對流佔優擴散方程的求解,併比較瞭幾種解法的優劣.
대류점우확산방정시묘술대류화확산과정적모형방정.대우구해대류점우확산방정적궤충차분격식진행분석,병편제료MATLAB정서.사용산례진행료수치시험,차분격식소제료위수치진탕,실현료대류점우확산방정적구해,병비교료궤충해법적우렬.
Convection-dominated diffusion equation describes convection and diffusion process. It analyzed finite difference meth?ods solving Convection-dominated diffusion equation, and writes MATLAB programs. It makes numerical experiment using exam?ple, these experiments reveals the finite difference methods eliminating false numerical oscillation, And it compares advantages and disadvantages of the several finite difference methods.
