def prepareSimulation(self, params = None):
if params == None:
params = AttributeDict({
'absTol' : 1e-6,
'relTol' : 1e-6,
})
#Define an explicit solver
simSolver = CVode(self)
#Create a CVode solver
#Sets the parameters
#simSolver.verbosity = LOUD
simSolver.report_continuously = True
simSolver.iter = 'Newton' #Default 'FixedPoint'
simSolver.discr = 'BDF' #Default 'Adams'
#simSolver.discr = 'Adams'
simSolver.atol = [params.absTol] #Default 1e-6
simSolver.rtol = params.relTol #Default 1e-6
simSolver.problem_info['step_events'] = True # activates step events
#simSolver.maxh = 1.0
simSolver.store_event_points = True
self.simSolver = simSolver
def prepareSimulation(self, params=None):
if params == None:
params = AttributeDict({
'absTol': 1e-6,
'relTol': 1e-6,
})
#Define an explicit solver
simSolver = CVode(self)
#Create a CVode solver
#Sets the parameters
#simSolver.verbosity = LOUD
simSolver.report_continuously = True
simSolver.iter = 'Newton' #Default 'FixedPoint'
simSolver.discr = 'BDF' #Default 'Adams'
#simSolver.discr = 'Adams'
simSolver.atol = [params.absTol] #Default 1e-6
simSolver.rtol = params.relTol #Default 1e-6
simSolver.problem_info['step_events'] = True # activates step events
#simSolver.maxh = 1.0
simSolver.store_event_points = True
self.simSolver = simSolver
def func_set_system():
##############################################
#% initial conditions
P_0 = depth*9.8*2600. #; % initial chamber pressure (Pa)
T_0 = 1200 #; % initial chamber temperature (K)
eps_g0 = 0.04 #; % initial gas volume fraction
rho_m0 = 2600 #; % initial melt density (kg/m^3)
rho_x0 = 3065 #; % initial crystal density (kg/m^3)
a = 2000. #; % initial radius of the chamber (m)
V_0 = (4.*np.pi/3.)*a**3. #; % initial volume of the chamber (m^3)
##############################################
##############################################
IC = np.array([P_0, T_0, eps_g0, V_0, rho_m0, rho_x0]) # % store initial conditions
## Gas (eps_g = zero), eps_x is zero, too many crystals, 50 % crystallinity,eruption (yes/no)
sw0 = [False,False,False,False,False]
##############################################
#% error tolerances used in ode method
dt = 3e7*10.
begin_time = 0 # ; % initialize time
N = int(round((end_time-begin_time)/dt))
##############################################
#Define an Assimulo problem
exp_mod = Chamber_Problem(depth=depth,t0=begin_time,y0=IC,sw0=sw0)
exp_mod.param['T_S'] = 500.#+273.
exp_mod.param['T_in'] = 1200.
exp_mod.param['eps_g_in'] = 0.0 # Gas fraction of incoming melt - gas phase ..
exp_mod.param['m_eq_in'] = 0.03 # Volatile fraction of incoming melt
exp_mod.param['Mdot_in'] = mdot
exp_mod.param['eta_x_max'] = 0.55 # Locking fraction
exp_mod.param['delta_Pc'] = 20e6
exp_mod.allow_diffusion_init = True
exp_mod.radius = a
exp_mod.permeability = perm_val
exp_mod.R_steps = 1500
exp_mod.dt_init = dt
inp_func1 = inp.Input_functions_Degruyer()
exp_mod.set_input_functions(inp_func1)
exp_mod.get_constants()
exp_mod.set_init_crust(material = 'Westerly_Granite')
#################
begin_time = exp_mod.set_init_crust_profile(T_0)
exp_mod.tcurrent = begin_time
P_0 = exp_mod.plith
exp_mod.t0 = begin_time
exp_mod.param['heat_cond'] = 1. # Turn on/off heat conduction
exp_mod.param['visc_relax'] = 1. # Turn on/off viscous relaxation
exp_mod.param['press_relax'] = 1. ## Turn on/off pressure diffusion
exp_mod.param['frac_rad_Temp'] =0.75
exp_mod.param['vol_degass'] = 1.
exp_mod.param['outflow_model'] = None # 'huppert'
IC = np.array([P_0, T_0, eps_g0, V_0, rho_m0, rho_x0]) # % store initial conditions
exp_mod.y0 = IC
#Define an explicit solver
exp_sim = CVode(exp_mod) #Create a CVode solver
# exp_sim = LSODAR(exp_mod) #Create a CVode solver
#Sets the parameters
exp_sim.store_event_points = True
#exp_sim.iter = 'Newton'
#exp_sim.discr = 'BDF'
exp_sim.inith = 1e2
#exp_sim.display_progress = True
exp_sim.rtol = 1.e-7
#exp_sim.maxh = 3e8*5. # 10 years
exp_sim.atol = 1e-7
#exp_sim.sensmethod = 'SIMULTANEOUS' #Defines the sensitvity method used
#exp_sim.suppress_sens = True #Dont suppress the sensitivity variables in the error test.
#exp_sim.usesens = True
#exp_sim.report_continuously = True
return exp_mod,exp_sim,N