Mooring issue in AQWA

korp8311 · July 26, 2022, 10:28

Hi!
I'm working on a project that involves analyzing the response of a lightweight surface buoy that is moored to the seabed. The water depth is about 10m. The issue is that the program does not accept the mass/unit length of the mooring cable I wish to input.
I get an error that the value should should be more than 0,13781 kg/m. However, the cables I want to analyze are much lighter than this and some of them are positively buoyant. I have been trying to find more about this on the manuals and online forums but I can't.

korp8311 · July 28, 2022, 10:28

Never mind, I got the solution after talking to someone at ANSYS. Turns out the equivalent cross-section is just used as a dial to regulate the buoyancy and doesn't have any physical significance. So a higher mass/unit length can be used with a corresponding equivalent cross-sectional area keeping the density of the cable same.

July 26, 2022, 10:28	Mooring issue in AQWA	#1
korp8311 New Member Apoorv Join Date: Jun 2022 Location: Trondheim, Norway Posts: 2 Rep Power: 0	Hi! I'm working on a project that involves analyzing the response of a lightweight surface buoy that is moored to the seabed. The water depth is about 10m. The issue is that the program does not accept the mass/unit length of the mooring cable I wish to input. I get an error that the value should should be more than 0,13781 kg/m. However, the cables I want to analyze are much lighter than this and some of them are positively buoyant. I have been trying to find more about this on the manuals and online forums but I can't.

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July 28, 2022, 10:28		#2
korp8311 New Member Apoorv Join Date: Jun 2022 Location: Trondheim, Norway Posts: 2 Rep Power: 0	Never mind, I got the solution after talking to someone at ANSYS. Turns out the equivalent cross-section is just used as a dial to regulate the buoyancy and doesn't have any physical significance. So a higher mass/unit length can be used with a corresponding equivalent cross-sectional area keeping the density of the cable same.