ON A RECTANGULAR PRESSURE DISTRIBUTION OF OSCILLATING STRENGTH MOVING OVER A FREE SURFACE

Through the application of linearized water-wave theory, a solution of the free surface due to the disturbance of a moving, oscillatory pressure distribution of rectangular form is obtained. Such a solution provides the basis for formulating the wave resistance of the moving pressure distribution just cited, as well as the hydrodynamic coefficients of a captured-air bubble of rectangular footprint in heave motion. Numerical methods are developed to compute the aforementioned resistance and hydrodynamic coefficients, the numerical examples of which are also presented. Of special interest is the occurrence of negative effective mass at low frequencies for the two forward speeds considered in the present work. Another interesting feature is the hydrodynamic instability and the negative damping that occurs in the low-frequency range when the Froude number is very high.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00224502
• Corporate Authors:

  Society of Naval Architects and Marine Engineers

  601 Pavonia Avenue
  Jersey City, NJ  United States  07306-2907
• Authors:
  • Chen, H H
• Publication Date: 1977-3

Media Info

• Features: References;
• Pagination: p. 11-23
• Serial:
  • Journal of Ship Research
  • Volume: 21
  • Issue Number: 1
  • Publisher: Society of Naval Architects and Marine Engineers
  • ISSN: 0022-4502
  • EISSN: 1542-0604
  • Serial URL: https://onepetro.org/jsr

Subject/Index Terms

• TRT Terms: Pressure; Surface effect ships; Vehicle design; Wave resistance
• Uncontrolled Terms: Pressure distribution
• Old TRIS Terms: Captured air bubble ships
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00152331
• Record Type: Publication
• Source Agency: Society of Naval Architects and Marine Engineers
• Files: TRIS
• Created Date: Apr 13 1977 12:00AM