IMPROVED METHOD FOR ESTIMATION OF THE MAXIMUM INSTANTANEOUS DISTORTION VALUES

In this article a statistical method for estimating the maximum instan taneous distortion values is developed further to estimate the maximum values of the instantaneous distortions in which the operation of pea k values of dynamic pressures and correlation between them are involve d. The effects of the correlation between fluctuating pressures on the estimation are discussed. Comparison between the estimated values and the experimental results shows that the developed method can quite ac curately estimate the maximum value of the instantaneous distortion wi th operation of peak values of dynamic pressures involved, such as the distortion descriptor DC(theta). The accuracy of estimation of maximu m instantaneous distortion can generally be improved by considering th e correlations between fluctuation pressures. However, when the mean c orrelation coefficient rhoBAR is less than 0.1, the estimation can be effected by dispensing with correlation.