![]() ![]() You will also need to switch to the wireframe view (Ctrl + G) and zoom in on the buoy to be able to see the short yellow lines in the centre of the buoys. To show them, select them in the model browser, right mouse click and select ‘Show’. ![]() These lines are named ‘Pivot1’ and ‘Pivot2’ and are currently hidden in the model. This is done with two single segment lines, which tie the two buoys together while still allowing them one degree of freedom about the central axis. ![]() The two buoys are connected together using a hinge arrangement, which allows the top buoy to rotate about the axis of the base buoy. The first model shows the CALM buoy modelled as a single stack of cylinders, while the second models it as multiple stacks of cylinders, to allow both radial and axial discretisation of the buoy’s properties.īuilding the model In the model ‘C06 CALM Buoy.sim’ the CALM buoy is modelled as two 6D spar buoys, named CALM Top and CALM Base. The examples also discuss the Spar Buoy Short Wave Issue and present two options for avoiding problems when modelling scenarios where the wavelength is in the order of three times the buoy’s diameter or less. These models are coupled analysis examples. A shuttle tanker is moored to the buoy by a hawser, with fluid transfer through a floating hose. C06 CALM Buoy Introduction In these examples, a CALM buoy is moored by six equally spaced mooring lines. ![]()
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