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- Create the following parameters in the Knowledge Browser:
Parameter name | Dimension | Determined by | Reference | In Class |
| [m] | USR: User or system/equation | Distance between center of buoyancy and metacenter | Intact stability calculation |
| [m] | USR: User or system/equation | Metacentric height | Intact stability calculation |
| [m] | USR: User or system/equation | Distance between keel and center of buoyancy | Intact stability calculation |
| [m] | USR: User or system/equation | Distance between keel and center of gravity | Intact stability calculation |
| [m^4] | USR: User or system/equation | Moment of inertia of the water plane area, For this tutorial give a rough estimate | Intact stability calculation |
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- Include the following parameters inentityin entity
Intact stability calculation:Loa,Boa,BM,COGX,COGY,COGZ,Displacement,GM,KB,KG,Moment_of_Inertia,Rho, andT_design. - Create the following relations (either entity relations or normal relations, it does not matter here):
Loa = ENTITY#(xx).Loa where “xx” is the QEntityID value of entity Main Dimensions.
Boa = ENTITY#(xx).Boa where “xx” is the QEntityID value of entity Main Dimensions.
GM = KB + BM – KG
BM = Moment_of_Inertia / (Displacement/Rho)
KG = COGZ
KB = 0.7*T_design
T_design = ENTITY#(xx).T_design where “xx” is the QEntityID value of entity Hydrostatics.
Displacement = ENTITY#(xx).Mass where “xx” is the QEntityID value of entity Mass calculation.
COGX = ENTITY#(xx).COGX where “xx” is the QEntityID value of entity Mass calculation.
COGY = ENTITY#(xx).COGY where “xx” is the QEntityID value of entity Mass calculation.
COGZ = ENTITY#(xx).COGZ where “xx” is the QEntityID value of entity Mass calculation.
Rho = ENTITY#(xx).Rho where “xx” is the QEntityID value of entity Hydrostatics.
- To show computed values set attribute @SHOW on
QEntityData.
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