FINITE ELEMENT SOLUTION FOR ADDED MASS AND DAMPING

Two-dimensional cylinders undergo small-amplitude forced sinusoidal motion at the free surface of an ideal fluid. Using a finite element representation of the fluid region, discretized equations of motion are presented. A radiation boundary condition allows simulation of regions of infinite width. For heaving motion, computer solutions are obtained for three different hull forms. Results are compared with published analytic solutions for regions of finite depth and infinite depth. It is shown that the finite element method can give satisfactory solutions for these problem. The method is especially useful for fluid regions of non-uniform depth.

• Supplemental Notes:
  • Finite Elementary Methods in Flow Problems, Int Symp, Proceedings, University of Swansea, Wales, Jan 1974.
• Corporate Authors:

  University of Alabama, Huntsville

  301 Sparkman Drive
  Huntsville, AL  United States  35899
• Authors:
  • Newton, R E
  • Chenault II, D W
  • SMITH, D A
• Conference:
  • Finite Elementary Methods in Flow Problems, Int Symp, Proceedings, University of Swansea, Wales, Jan 1974.
• Publication Date: 1974-1

Media Info

• Features: References;
• Pagination: p. 159-170

Subject/Index Terms

• TRT Terms: Coefficients; Damping (Physics); Finite element method; Free surface; Mass
• Uncontrolled Terms: Heaving
• Old TRIS Terms: Added mass; Free surface effects; Heave damping
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00127016
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: Proc Paper
• Files: TRIS
• Created Date: Nov 5 1975 12:00AM