def compute_diagnostics(self):
diagnostic_field_count = libspud.option_count("/system/diagnostic_fields/diagnostic")
if(diagnostic_field_count == 0):
return
LOG.info("Computing diagnostic fields...")
d = Diagnostics(self.mesh)
for i in range(0, diagnostic_field_count):
name = libspud.get_option("/system/diagnostic_fields/diagnostic[%d]/name" % i)
try:
if(name == "grid_reynolds_number"):
viscosity = Function(self.W.sub(1)).interpolate(Expression(libspud.get_option("/system/equations/momentum_equation/stress_term/scalar_field::Viscosity/value/constant")))
field = d.grid_reynolds_number(self.u, viscosity)
elif(name == "courant_number"):
field = d.courant_number(self.u, self.options["dt"])
else:
raise ValueError("Unknown diagnostic field: %s" % name)
except ValueError as e:
LOG.exception(name)
sys.exit()
LOG.info("Diagnostic results for: %s" % name)
LOG.info("Maximum value: %f" % max(field.vector()))
LOG.info("Maximum value: %f" % min(field.vector()))
return
def compute_diagnostics(self):
diagnostic_field_count = libspud.option_count(
"/system/diagnostic_fields/diagnostic")
if (diagnostic_field_count == 0):
return
LOG.info("Computing diagnostic fields...")
d = Diagnostics(self.mesh)
for i in range(0, diagnostic_field_count):
name = libspud.get_option(
"/system/diagnostic_fields/diagnostic[%d]/name" % i)
try:
if (name == "grid_reynolds_number"):
viscosity = Function(self.W.sub(1)).interpolate(
Expression(
libspud.get_option(
"/system/equations/momentum_equation/stress_term/scalar_field::Viscosity/value/constant"
)))
field = d.grid_reynolds_number(self.u, viscosity)
elif (name == "courant_number"):
field = d.courant_number(self.u, self.options["dt"])
else:
raise ValueError("Unknown diagnostic field: %s" % name)
except ValueError as e:
LOG.exception(name)
sys.exit()
LOG.info("Diagnostic results for: %s" % name)
LOG.info("Maximum value: %f" % max(field.vector()))
LOG.info("Maximum value: %f" % min(field.vector()))
return
def diagnostics_courant_number():
from firedrake_fluids.diagnostics import Diagnostics
mesh = UnitSquareMesh(10, 10)
fs = FunctionSpace(mesh, "CG", 1)
vfs = VectorFunctionSpace(mesh, "CG", 1)
velocity = Function(vfs).interpolate(Expression(("x[0]", "x[1]")))
dt = 0.5
diagnostics = Diagnostics(mesh)
courant_number = diagnostics.courant_number(velocity, dt)
courant_number_exact = Function(fs).interpolate(
Expression("sqrt(pow(x[0], 2) + pow(x[1], 2))*0.5/0.1414213562"))
norm = sqrt(
assemble(
dot(courant_number - courant_number_exact,
courant_number - courant_number_exact) * dx))
return norm