INVESTIGATION OF WATER IMPACT OF BLUNT RIGID BODIES - REAL FLUID EFFECTS.

Abstract

The results of an experimental investigation of the importance of air density and other real fluid properties to water impact of small, blunt, rigid bodies are given. Assuming peak impact pressure to be the dependent variable, the significant fluid properties were found to be liquid density, liquid sonic velocity, gas density and probably to some extent, gas kinematic viscosity. The test results indicate that even for low velocity impact, where air compressibility is a principal factor, acoustic propagation in the water needs consideration and should not be neglected without justification. A limited amount of testing was also done to determine the effect of liquid surface waves and the restriction of airflow upon impact pressures. Finally, high-speed motion pictures were taken that showed the surface disturbance during impact. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 29, 1967
Accession Number
AD0663893

Entities

People

  • C. Richard Gerlach

Organizations

  • Southwest Research Institute

Tags

DTIC Thesaurus Topics

  • Acoustic Propagation
  • Compressive Properties
  • Lepidoptera
  • Mechanical Properties
  • Motion Pictures
  • Physical Properties
  • Surface Waves
  • Viscosity
  • Waves

Readers

  • Combustion Dynamics and Shock Wave Physics.
  • Combustion and Flow Dynamics.
  • Fluid Mechanics and Fluid Dynamics.