Turbulent Pressure Field Beneath a Hydraulic Jump

Certain statistical characteristics of the fluctaation of pressure at the bottom of a classical hydraulicjump are estimated using analog and digital modes of analysis of random data. The results indicate a relatively higher intensity of pressure fluctuation because of the stage of development of the incoming supercritical stream. The evaluated characteristics are, in general, similar in the investigated range of initial Froude number. The structure of the pressure field is discussed in terms of moments of the probability density histograms, shape of the autocorrelation and the spectral density functions and the estimated timemicroscales.