Hello everyone,
I was working on a floating cylinder. This cylinder is attached to the sea bed(for example) by a single mooring line. The cylinder is allowed to move only in x direction i.e he can only do translation.
the equation of motion that describes the motion of the cylinder is :
m_cylinder*x_double_dot + k_mooring*x = 0.5*rho*Cd*dimeter*draft*(-x_dot)*abs(-x_dot)
the term in the right of the equality is the viscous term that i am askin for.
In general, it is expected that the motion of the cylinder decays with time.
However when i use ode15s in matlab, the response has the same amplitude like a sine wave and like the viscous term has no effect.
Does anyone has encountered this before ?
what do you suggest ?
Thanks in advance
Riad
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