摘要
本文给出了一个在矩形网格上用二维三次多项式内播任意点函数值,或使原始矩形网格任意等分加密的方法;还给出了在等间距矩形网格上跟踪并线性内插求等值线上点的方法,直线连接这些点就可得到等值线,用已知的函数关系,对本文方法内插求等值线的结果所作的检验,表明方法是可靠和精确的。对某机枪枪口侧前方矩形网格上的实测数据,用本文方法绘制了等时线和等压线。
This paper presents a method which can beused to interpolate the functional value at any point on arectangular grid and obtain arbitrary equipartiton. It alsodescribes a method, which can be used to track and interpolatelinearly to acquire the points of contours on rectangular grid ofequal interval. The contours are obtained by connecting thesepoints by s traight lines. Using known function relations toexamine the results of interpolating and solving contours byabove methods, it is shown that these methods are reliable andaccurate. These methods can also be used to plot the time andpresure contours for the experimental data of a certain of mach-inep gun on the rectangular grid of side-front direction of muzzle.
