WAMIT user group
I am interested in communicating WAMIT user group pls.mail me
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Re: WAMIT user group *NM*
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Re: WAMIT user group
I am interested in participating of this forum.
Regards, Fabio. |
I am, too, interrested!
As a WAMIT noob I'd like to participate
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Well, here's a question to jump start a discussion:
When configuring my frc file for a non moored vessel (no need for damping and stiffness matrix) I need to input a mass matrix. This mass matrix is found on page 149 in Newman's Marine Hydrodynamics. What reference point do I use? So far I get best results if my Cog x = 0 ; CoG y = 0 : CoG z = Draught Can anyone confirm that that is the valid input please:confused:? Thanx |
CoG
CoG Z is measured from the waterline
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is anybody using wamit now??
i need to get a trial version of wamit.kindly help me out.
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Wamit
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1.) What is the reason behind these strange outcomes ? (i.e negative volumes, high centre of buoyancy ) 2.) Which one volume (e.g VOLX,VOLY 'or' VOLZ) is used as undisplaced volume in FAST to arrive at the condition mention in HydroDyn_Manual section 6.8.1 (Undisplaced Position for Floating Systems). please find WAMIT output file |
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Probably solved by now but anyway... if you look at page 25 of the WAMIT Manual you will see that the three volumes should be very close to each other so does not really matter which one you take, you could do an average. There is special consideration for bottom-mounted structures, don't know if that is your case. In this scenario the VOLZ differs from the correct volume, might even be displayed as negative as you said. Regarding negative center of buoyancy, the usual coordinate system of WAMIT places the origin in the free-surface, so vertical body-related coordinates can be negative for the submerged sections of the body. |
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