Study on the effects of CoG Study on the effects of CoG shifts on the responses of a shifts on the responses of a

floating bodyfloating body

Guided byDr.Pannerselvam

C.KRISHNANOE13M061

INTRODUCTIONINTRODUCTIONMotion of the structure

should be known In order to determine the stress distribution on the structure.

The centre of gravity of a floating body may shift due to various reasons during operating condition

ObjectiveObjectiveTo study the response

characteristics of a floating body when there is shift in the centre of gravity

ScopeScope To model a barge and spar. Do a

numerical study in ANSYS AQWA To Study the added mass, damping and

response of the body for various degrees of freedom

1. CoG is shifted along vertical axis2. CoG is shifted along horizontal axis3. CoG is shifted along both horizontal and

vertical axis

Literature ReviewLiterature ReviewV.J.Kurian, 2008, (Parametric

study of TLPs subjected to random waves, ICCBT 2008) has studied the effect of VCG in TLP

Nico Vandenworm, 2008, (Special report on New FPSO options) has studied a new concept FPSO and the effect of KG on the response

ModelModelThe model has been taken from paper Y.R.Choi &S.Y.Hong 2002

ModelModelDetails of FPSO

  Length 219.08 m

Breadth 42 m

Depth 23.1 m

Draft 14.5 m

Displacement 107516 m3

The model has been taken from paper Y.R.Choi &S.Y.Hong 2002

Validation StudyValidation Study

Validation StudyValidation Study

ReferenceReferenceSea loads on ships and offshore

structures, O.M. FaltinsenPrinciple of Naval Architecture,

Vol 3Discussion on effect of LCB

location on seakeeping analysis