simulation.modules.hydro

simulation.modules.hydro.get_dynamic_coeffs(Hs, T, D_f, T_f, D_s, D_d, T_s, h, m_float, m_spar, spar_excitation_coeffs, C_d_float, C_d_spar, rho_w, g, use_MEEM, harmonics, hydro)

Function get_dynamic_coeffs()

Parameters:

• Hs – significant wave height (m)

• T – wave energy period (s)

• D_f – Float Diameter

• T_f – T_f

• D_s – Spar Diameter

• D_d – Diameter of damping plate (m)

• T_s – Draft of spar (m)

• h – water depth (m)

• m_float – m_float

• m_spar – m_spar

• spar_excitation_coeffs – spar excitation hydro coeffs from WAMIT for nominal RM3

• C_d_float – coefficient of drag for float

• C_d_spar – spar coefficient of drag

• rho_w – water density (kg/m3)

• g – acceleration of gravity (m/s2)

• use_MEEM – whether to use MEEM for hydro coeffs (boolean)

• harmonics – number of harmonics to use for MEEM (int)

• hydro – function from WECSim

Returns:

m_f

Returns:

B_h_f

Returns:

K_h_f

Returns:

F_f_mag

Returns:

F_f_phase

Returns:

m_s

Returns:

B_h_s

Returns:

K_h_s

Returns:

F_s_mag

Returns:

F_s_phase

Returns:

m_c

Returns:

B_h_c

Returns:

drag_const_f

Returns:

drag_const_s

Returns:

mag_v0_f

Returns:

mag_v0_s

Returns:

Angular wave frequency (rad/s)

Returns:

Wavenumber (1/m)

Returns:

A f / $\rho$

Returns:

A s / $\rho$

Returns:

A c / $\rho$

Returns:

B f / $\rho$ w

Returns:

B s / $\rho$ w

Returns:

B c / $\rho$ w

Returns:

$\gamma$ f / $\rho$ g

Returns:

$\gamma$ s / $\rho$ g

Returns:

$\gamma$ phase f

Returns:

$\gamma$ phase s

simulation.modules.hydro.group_velocity(w, k, g, h)

Function group_velocity()

Parameters:

• w – Angular wave frequency (rad/s)

• k – Wavenumber (1/m)

• g – acceleration of gravity (m/s2)

• h – water depth (m)

Returns:

V_g

Returns:

mult

simulation.modules.hydro.run_MEEM(heaving_IC, heaving_OC, auto_BCs, N_num, M_num, K_num, a1_mat, a2_mat, d1_mat, d2_mat, h_mat, m0_mat, spatial_res, show_A, plot_phi)

Function run_MEEM()

Parameters:

• heaving_IC – heaving_IC

• heaving_OC – heaving_OC

• auto_BCs – auto_BCs

• N_num – N_num

• M_num – M_num

• K_num – K_num

• a1_mat – a1_mat

• a2_mat – a2_mat

• d1_mat – d1_mat

• d2_mat – d2_mat

• h_mat – h_mat

• m0_mat – m0_mat

• spatial_res – spatial_res

• show_A – show_A

• plot_phi – plot_phi

Returns:

$\mu$ nondim

Returns:

$\lambda$ nondim

Returns:

exc_phases

simulation.modules.hydro.get_hydro_coeffs(r, k, draft, hydro)

Function get_hydro_coeffs()

Parameters:

• r – r

• k – Wavenumber (1/m)

• draft – draft

• hydro – function from WECSim

Returns:

A f / $\rho$

Returns:

A s / $\rho$

Returns:

A c / $\rho$

Returns:

B f / $\rho$ w

Returns:

B s / $\rho$ w

Returns:

B c / $\rho$ w

Returns:

$\gamma$ f / $\rho$ g

Returns:

$\gamma$ s / $\rho$ g

Returns:

$\gamma$ phase f

Returns:

$\gamma$ phase s

simulation.modules.hydro.get_hydro_coeffs_MEEM(a2, m0, d2, a1, d1, a3, h, g, w, harmonics, spar_excitation_coeffs)

Function get_hydro_coeffs_MEEM()

Parameters:

• a2 – a2

• m0 – m0

• d2 – d2

• a1 – a1

• d1 – d1

• a3 – a3

• h – water depth (m)

• g – acceleration of gravity (m/s2)

• w – Angular wave frequency (rad/s)

• harmonics – number of harmonics to use for MEEM (int)

• spar_excitation_coeffs – spar excitation hydro coeffs from WAMIT for nominal RM3

Returns:

A f / $\rho$

Returns:

A s / $\rho$

Returns:

A c / $\rho$

Returns:

B f / $\rho$ w

Returns:

B s / $\rho$ w

Returns:

B c / $\rho$ w

Returns:

$\gamma$ f / $\rho$ g

Returns:

$\gamma$ s / $\rho$ g

Returns:

$\gamma$ phase f

Returns:

$\gamma$ phase s

simulation.modules.hydro.dispersion(w, h, g)

Function dispersion()

Parameters:

• w – Angular wave frequency (rad/s)

• h – water depth (m)

• g – acceleration of gravity (m/s2)

Returns:

Wavenumber (1/m)