摘要
本文在推广的散度定理的基础上给出了散度、旋度和梯度与坐标无关的统一定义。着重在一般曲线坐标系中利用以三对坐标面为包容面的微元体为共同模式,把散度、旋度和梯度统一表示为某一微分量的极限值,从而直接导出了张量分析中这三种量的熟知的表达式。
In this paper,the unified definition of divergence,curl and gradientindependent of the coordinate system is given by the extended divergencetheorem.Stressed on using a common model which is a volume elementenclosed by the three pairs of coordinate surfaces,all the divergence,curland gradient are denoted uniformly in the form of the limiting value of adifferential quantity.So the known expressions of these three quantities intensor analysis can be derived directly.
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
1990年第3期79-85,共7页
Journal of National University of Defense Technology
关键词
张量分析
散度
梯度
旋度
统一定义
tensor analysis
divergence
gradient
curl
unified definition