RO-RO SHIP DAMAGE STABILITY CALCULATIONS USING THE PRESSURE INTEGRATION TECHNIQUE

Article type: Research Article

Authors: Santos, T.A. | Soares, C. Guedes

Affiliations: Unit of Marine Technology and Engineering, Technical University of Lisbon, Portugal

Abstract: This work presents a formulation to calculate the time change of the damage stability of ships with open water. It adopts a pressure integration technique, which has been used earlier to calculate the hydrostatic properties of marine structures, and is extended here to compute the rates of flow through damage openings while performing flooding simulations. The principles of this technique are exposed and its advantages and disadvantages are discussed. Using a practical method to generate the panels required to use the pressure integration technique, a damaged Ro-Ro ship numerical model has been generated. Results of its intact and damaged stability, obtained using the pressure integration technique, are presented, compared with other numerical results and discussed. The technique is then applied to estimate the rate of flow through damage openings on the ship's hull. The results allow the conclusion that this technique can be successfully applied to the time domain simulation of ship flooding, both to compute the damaged ship hydrostatic properties and the rate of flow through the damage openings on the ship's hull.

Journal: International Shipbuilding Progress, vol. 48, no. 2, pp. 169-188, 2001