namelist_forecast64.py

""" This module contains the namelist variables for the barotropic vorticity model """
import numpy as np

# Set up time and space domain and other parameters
# -----------------------------------------------------------------------------------------
# number of grid points
nx = 64
ny = 64
# time step; case dependent
dt = 0.05
# domain size
lx = 2 * np.pi
ly = lx
# grid spacing
dx = lx / nx
dy = ly / ny
# hyper-diffusivity
nu = 0.0
# linear drag; needed for Komogorov flow; e.g. 0.1 
mu = 0.0
# forcing rate (inverse of forcing time scale)
alpha = 0.5
# middle shear zone width as a fraction (e.g. 32 means a width of pi/32)
shearFrac = 32
# random seed for noise in initial condition
randSeed = 2021
# output file name
fileNameFormat = "BVE_Forecast64.nc"
# total integration time; useful for standalone mode only
t_max = 100.0
# is this a restart?
isRestart = False
# restart file name
restartFile = ""
# "sprint" time interval, i.e., save one slice every dtSprint time
dtSprint = 1.0
nSteps = np.around(dtSprint / dt).astype(int)
nSprints = 100
# batch size for 'race'; use smaller batch size when using high resolutions
raceBatch = 100
# nSprints = np.around(t_max/dtSprint).astype(int)
# can be any number of sprints you want to include for a relay, but be aware of memory use
# -----------------------------------------------------------------------------------------