Download Free Water Waves Produced By Impulsive Energy Sources Part Vi Data Analysis Book in PDF and EPUB Free Download. You can read online Water Waves Produced By Impulsive Energy Sources Part Vi Data Analysis and write the review.

This report contains an analysis of experimental wave data obtained from small scale underwater explosions conducted by the Waterways Experiment Station, Vicksburg, Mississippi. Data from 362 explosions at 96 charge depths were used in the analysis. The charge weights used were one-half, two, ten, 125, and 385 pounds of TNT. In addition, data from seven operation Hydra II A shots were used, along with data from Wahoo and Wigwam nuclear explosions. The basis for analysis established in Progress Report III, Data Analysis and Scaling Relationships, was continued in this report. An empirical formula is derived for predicting the maximum wave amplitude at a distance from the source, resulting from an explosion of charge weight at a detonation depth and assuming water of constant depth. Empirical relationships also are found for wavelength, wave number, phase velocity, and group velocity at the maximum of the first envelope, all as a function of charge weight and explosion depth. The rate of decay of the wave amplitude with distance also is computed. A method is presented for computing the parameters associated with any crest, trough, or envelope of the wave train. This computation is based on the solution for the wave amplitude and data at the maximum of the first envelope, given by this report. (Author).
Experimental wave data obtained from small scale underwater explosions was analyzed. Consideration was made of all known and available data including those of Project SEAL and others. It was concluded that the only available small-scale field data of sufficient reliability for use in a detailed analysis are those obtained by Waterways Experiment Station scientists in their past and current test series. Accordingly, certain sets of WES data have been analyzed in detail with the major objectives being the investigation of scaling laws and empirical wave height prediction formulae. (Author).
The following study presents an explicit numerical procedure for finding the position of the free surface and the velocities at the free surface due to a deep explosion. The computational time involved with this procedure will be considerably less than that involved if one were to use the explicit analytical solution given in Progress Report I of this series. The procedure suggested is analogous to that suggested in Progress Report II, and was made possible only after the series representing the velocity potential was shown to be absolutely convergent. (Author).
The propagation of waves in a cylindrically symmetric system is considered. The generating function is assumed known and may be one of the following forms: (1.) An initial displacement, (2.) An initial impulse, (3.) An initial shape and initial velocity distribution. Linear propagation theory is considered and a numerical integration procedure is developed for the evaluation of the well known Kranzer-Keller exact integral equations. Through this approach, it is possible to avoid the approximation R“r, and the stationary phase approximation, both of which are inadequate in certain regions. (Author).
In Part I: Subsurface Generation, an analytical solution for the space-time history of the surface deformation produced by deep underwater explosions was presented. This report, Part II, is concerned with the determination of the shape of the free surface subsequent to a surface explosion. The solution presented in this paper is numerically explicit, and is suitable for medium sized computers. Truncation errors are easily bounded. The only approximations involved in the analysis are the assumptions of incompressibility and irrotationality. Boundary conditions are kept nonlinear. Restriction is made to the area affected by overpressures due to the explosion and to the interval during which these overpressures are known. Although the method is applicable to both chemical and nuclear explosions, the properties of the latter are considered, essentially, in discussing the computational details. (Author).