The Role of Nonlinear Hydrodynamics in Ship Leaning & Capsizing

AI Thread Summary
Nonlinear hydrodynamic forces are often considered negligible during the slow leaning of a ship, particularly in quasi-static stability analyses. This perspective holds unless the focus is on the rapidity of capsizing events. For vessels heeling slowly, these forces can typically be ignored, simplifying stability assessments. However, their significance may increase when evaluating a capsized ship's righting behavior. Ultimately, the role of nonlinear hydrodynamics is context-dependent, particularly in dynamic scenarios.
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Can the nonlinear hydrodynamic be ignored in the process of a ship leaning slowly， and the ship capsized ultimately.

Thanks！
 
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wssrwsmt said:
Can the nonlinear hydrodynamic be ignored in the process of a ship leaning slowly， and the ship capsized ultimately.

Thanks！
Nonlinear hydrodynamic what?

Ship stability at large angles of heel is usually treated as a quasi-static process, unless one is trying to determine how quickly capsizing takes place.
 
SteamKing said:
Nonlinear hydrodynamic what?

Ship stability at large angles of heel is usually treated as a quasi-static process, unless one is trying to determine how quickly capsizing takes place.
The nonlinear hydrodynamic what?
  • The nonlinear hydrodynamic forces
 
wssrwsmt said:
The nonlinear hydrodynamic what?
  • The nonlinear hydrodynamic forces

Ship stability at large angles of heel is usually treated as a quasi-static process, unless one is trying to determine how quickly capsizing takes place.
If, as you say, the vessel is heeling slowly, then these forces can be neglected.
 
SteamKing said:
Ship stability at large angles of heel is usually treated as a quasi-static process, unless one is trying to determine how quickly capsizing takes place.
If, as you say, the vessel is heeling slowly, then these forces can be neglected.
Thank you for answering my question.
So， The nonlinear hydrodynamic forces can be neglected when a capsized ship is righting ？
 

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