Total drag coefficient

Total drag coefficient

Usage

C_t(
  U0,
  macro_state,
  site_params,
  spec_params,
  constants = c(s = 0.0045, gam = 1.13, a2 = 0.2^2, Cb = 0.0025)
)

Arguments

U0

incoming incident water velocity (m/s)

macro_state

vector of named numbers. Must include:

• biomass, macroalgae wet weight (g)

• hm, algae height (m)

site_params

vector of named numbers. Must include:

• hz, total water depth (m)

• hc, vertical water column occupied by the canopy (m)

• d_top, depth of the top of the canopy beneath the water surface (m)

spec_params

vector of named numbers. Must include:

• SA_WW, conversion of wet weight to surface area

constants

vector of named numbers defining extra constants for the attenuation submodel. Must include all constants, which have the following default values:

• s = 0.0045

• gam = 1.13

• a2 = 0.2^2

• Cb = 0.0025

Value

The total drag coefficient C_t