HOS-ocean

High-Order Spectral method for oceanic simulations

This readme file describes the different cases that might be computed with the periodic HOS model and gives instructions to set the numerical parameters n1 to p2

Setting the value of integers n1, n2, M, p1 and p2 in variables_3D.f90

2D simulation

For a 2D simulation, compile with n2=1 AND p2=1 to adjust the memory allocation to minimum

If partial dealiasing is used, compile with p1 set to maximal required value (total dealiasing is obtained with p1=M but it can be reduced if p1 is further set to a value below M)

3D simulation

For a 3D simulation, compile with n2\=1 AND p2 set to required value

If partial dealiasing is used in x-direction, compile with p1 set to maximal required value (total dealiasing is obtained with p1=M but it can be reduced if p1 is further set to a value below M)

If partial dealiasing is used in y-direction, compile with p2 set to maximal required value (total dealiasing is obtained with p2=M but it can be reduced if p2 is further set to a value below M)

• input_HOS.dat will have to be attached to run this program *

Setting the value of integer i_case in input_HOS.dat

• i_case = 1 : starts from rest

• i_case = 2 and 21 : starts with a natural mode

  • 2 - progressive wave: potential on free surface accordingly to linear theory
  • 21 - stationary wave: no velocity at initial time The number of the mode, its amplitude and phase have to be chosen in the module initial_condition.f90.

• i_case = 3 and 31 and 32 : Irregular directional sea-state from spectrum specified :

  • 3 - input file parameters
  • 31 - WAVEWATCH III® spectrum file
  • 32 - previous HOS-ocean simulation

• i_case = 8... : Nonlinear regular wave (from Rienecker and Fenton). This means that xlen and ylen are interpreted as integer and represent the number of wavelength in x- and y- direction respectively.

  • i_case = 81 : steepness 0.1
  • i_case = 82 : steepness 0.2
  • i_case = 83 : steepness 0.3
  • i_case = 84 : steepness 0.4
  • i_case = 89 : steepness 0.09

Further details about input file, output of the code... may be find at the Wiki page of HOS-ocean project: https://github.com/LHEEA/HOS-ocean/wiki