Accession Number : AD0688157

Title :   TRANSIENT EXCITATION OF A LIQUID HALF-SPACE BY A DECELERATING LOAD AND THE ASSOCIATED TRANSONIC EFFECTS.

Descriptive Note : Technical rept.,

Corporate Author : COLUMBIA UNIV NEW YORK DEPT OF CIVIL ENGINEERING AND ENGINEERING MECHANICS

Personal Author(s) : Myers,Michael K. ; Bleich,Hans H.

Report Date : APR 1969

Pagination or Media Count : 31

Abstract : Wave propagation from a two-dimensional expanding load on a liquid half space is considered for the case in which the fronts of the load decelerate monotonically from an initial supersonic speed. The pressure on the surface is taken to be of constant magnitude. Particular attention is paid to the pressure field near the surface during the transonic period of motion of the expanding pulse. It is found that rapid variations in the field occur near the wavefront during this period. Results are computed for the special case of a uniformly decelerating load. (Author)

Descriptors :   (*AERODYNAMIC LOADING, *LIQUIDS), (*DECELERATION, SOUND), (*SOUND, PROPAGATION), PRESSURE, TRANSONIC CHARACTERISTICS, SURFACES, TWO DIMENSIONAL FLOW, SUPERSONIC FLOW

Subject Categories : Acoustics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE