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 April 9, 2014, 07:30 Added Mass #1 New Member   Grigor Nikolov Join Date: Dec 2012 Posts: 21 Rep Power: 4 A simply question is added mass used by Ansys Fluuent in 6DOF model differential equations

 April 9, 2014, 17:05 #2 Senior Member   Gonzalo Join Date: Mar 2011 Location: Argentina Posts: 107 Rep Power: 7 Can you clarify your question?

 April 10, 2014, 01:58 #3 New Member   Grigor Nikolov Join Date: Dec 2012 Posts: 21 Rep Power: 4 Displacement of floating structure has to be measured that is product of vortex induced motions. The unit has 3 degrees of freedom sway surge and yaw. Model of turbulence is k-omega SST. So the question is does the calculation include added mass or not

 April 10, 2014, 09:07 #4 Senior Member   Gonzalo Join Date: Mar 2011 Location: Argentina Posts: 107 Rep Power: 7 Please take a look at this thesis. The answer is yes, because the added mas is a consequense of solving the equation of motion of a body inmersed in a fluid and that is what the 6DOF model does. But you have to calculate the added mass through a propper method, I mean the model 6DOF solves the equation of motion of the body but if you want to know the added mass you have to calculate this. I hope this helps you. Regards. Gonzalo

 April 10, 2014, 12:38 #5 New Member   Grigor Nikolov Join Date: Dec 2012 Posts: 21 Rep Power: 4 tnx for answer p.s link doesnt work

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