Aquaculture Net Drag Force and Added Mass

Experimental study on flow velocity and mooring loads for multiple net cages in steady current

“…where r i is the flow velocity reduction factor, n c is the number of upstream crossings of other plane nets before the current hits the actual plane net, and C d is the drag coefficient of the net calculated using empirical formulas proposed by Balash et al (2009):…”

The dynamic simulation of the pelagic longline deployment

“…Lader et al (2007) suggested that C m was 1 in the condition of static irrotational fluid. Balash et al (2009) proposed C m of netting twine was much larger compared with that of the cylinder because the diameter of netting twine was small. Zhao et al (2008) found the influence of additional mass force was small, and the additional mass force could be ignored in the numerical simulation.…”

Numerical study on the hydrodynamic characteristics of biofouled full-scale net cage

“…where u 0 is the incoming velocity and C d and C l are coefficients that can be calculated by empirical formulas proposed by Tsukrov et al (2011), Balash et al (2009), Zhan et al (2006, Aarsnes et al (1990), etc. Since there exists a certain reduction in flow velocity through the porous media, an approximate calculation for u in Eqs.…”

“…Numerous studies that have been previously performed focus mainly on the hydrodynamic characteristics of net cages with clean netting (Aarsnes et al, 1990;Lader and Enerhaug, 2005;Johansson et al, 2007;Lee et al, 2008;Balash et al, 2009;Tsukrov et al, 2011;DeCew et al, 2013; among many others). However, research regarding the hydrodynamic characteristics of biofouled net cages is sparse.…”