Computational model for simulation of lifeboat motions during its launching from ship in rough seas

Section: Of Calculationsmentioning

confidence: 99%

Visualization of a Lifeboat Motion During Lowering Along Ship’s Side

Kniat

2017

“…The above described calculation model was implemented in the form of a computer code, written in C++ by dr. Paweł Dymarski and described in [2] and [3]. The code allows to simulate the entire process of boat lowering, from the time of boat hook release to boat setting on water and disconnecting from the ropes on which it was lowered.…”

Section: Selecting Ranges Of Hull Motion Parametersmentioning

confidence: 99%

Searching for Critical Conditions During Lifeboat Launching – Simulations

Dymarski

Kniat

2017

Self Cite

The article describes numerical simulations of the process of lifeboat launching at the ship’s side. The research aimed at finding the values of ship motion parameters which appear to be most dangerous for people in the lowered lifeboat due to the generated accelerations. The simplified model of ship hull motion adopted at this research stage bases on a superposition of harmonic motions with given amplitudes and periods in six degrees of freedom. The range of the amplitude of motion for each degree of freedom corresponds approximately to that of possible motion of the PANAMAX type ship on the Baltic sea. In total, 120 960 cases of ship hull motion were examined.

“…The state of individuals is described by the probability distribution of shape features (overall dimensions) of the evacuated people [3,9,15]. Since the individual in the door is subject to the same danger process in each door opening, the state is indexed by the number of doors in particular bulkheads along the evacuation route (n) and the number of danger (m):…”

Section: Model Of Evacuation Elements and Relationsmentioning

confidence: 99%

“…The permissible load capacity of the door is determined by the buyer when ordering. It is expressed as the maximal water head which can load the door [2,3,5,6,10]. This water head is measured from the lower edge of the door to the lower bulkhead deck surface in the centre plane of the ship.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Bulkhead Door – Critical Evacuation States

Flizikowski

Kruszelnicka

Michałowski³

et al. 2017

The article is a preliminary to a modification concept of the sliding watertight bulkhead door used on ships and vessels. Hydraulic or electro-hydraulic drives used to move these doors require complicated and extended pressure installations with large amounts of hydraulic fluid. Well-known operational drawbacks of these installations include high level of noise and possibility of various leaks in the hydraulic system. Being the first in a series, the present article describes and analyses critical states which can take place during evacuation of people through openings in the watertight bulkhead doors on seagoing ships and vessels.