CAJ | 학술논문

应用无约束优化的Powell方法和多元回归方法，对滴体积法测定表面张力计算公式中的校正系数进行曲线拟合。按照V/R3数值，给出了校正系数的分段近似解析表达式，拟合值与实测值相对偏差小于0.3％。应用校正系数拟合函数，可以将测定的液滴体积代入公式直接计算表面张力。该种计算方法省去了查表确定校正系数的步骤便于在计算机上应用。
응용무약속우화적Powell방법화다원회귀방법，대적체적법측정표면장력계산공식중적교정계수진행곡선의합。안조V/R3수치，급출료교정계수적분단근사해석표체식，의합치여실측치상대편차소우0.3％。응용교정계수의합함수，가이장측정적액적체적대입공식직접계산표면장력。해충계산방법성거료사표학정교정계수적보취편우재계산궤상응용。
The curve fitting of correct coefficient in the dropvolume method for determination of surface tension was carried out by means of Powell method and multivariate regression. According to the value of V/R3, the approximate analytical expressions were given respectively. The relative deviation between fitting value and experimental value is less than 0.3 %. By application of the fitting function of correct coefficient, the surface tension may be obtained by direct calculation with the volume of drop Ⅴ. Because of obviation of looking up a correct coefficient in the table, the calculation is easy to operate by computer.