![]() The floater is not included in the visualization. While the colors on the lines represents the tension. Here the colors on the membrane represent the total pressure difference on the membrane (in absolute values). In the video you see an example of a time domain simulation. Enforce pressures from “current only” as in point 2, together with pressures from point 3 and forced motion of the top nodes based on floater motions (from a RAO calculated for the floater without lice-skirt). Wave exciting pressure on the lice-skirt.Ĥ. Pressure due to motion of the lice-skirt (used to estimate added mass values).Ĭ. Use a linear potential flow frequency domain solver to calculate the pressure forces on the lice skirt in the deformed shape from point 2.Ī. Calculate the deformation of the lice skirt in current only conditions, based on and with an appropriate spatial pressure distribution of the force.ģ. ![]() Both for fish welfare and validity of the method □Ģ. ![]() Make sure you have enough bottom weight to minimize deformation. Recently, together with Trygve Kristiansen, we've tried the following method to the problem:ġ. How can we accurately predict the connection forces between the floating collar and the membrane to ensure a safe design? Another complicating matter is what happens when it is connected beneath a relatively large floating collar. The hydrodynamic behavior of a membrane type lice-skirt, as used by the aquaculture industry in waves and current is challenging to analyze. ![]()
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