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	tadded missing self params - ns2dfd - 2D finite difference Navier Stokes solver…
	git clone git://src.adamsgaard.dk/ns2dfd
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	---
	commit fd992e44cc3ef9a8a55b0f36db39d5e76eb798b5
	parent d7c14c02d398035d751b2d5e7dee8896b9c53437
	Author: Anders Damsgaard <[email protected]>
	Date: Sun, 2 Mar 2014 10:13:59 +0100

	added missing self params

	Diffstat:
	M ns2dfd.py \| 29 ++++++++++++++---------------

	1 file changed, 14 insertions(+), 15 deletions(-)
	---
	diff --git a/ns2dfd.py b/ns2dfd.py
	t@@ -4,7 +4,7 @@ import numpy

	class fluid:

	- def __init__(name = 'unnamed'):
	+ def __init__(self, name = 'unnamed'):
	'''
	A Navier-Stokes two-dimensional fluid flow simulation object. Most
	simulation values are assigned default values upon initialization.
	t@@ -25,7 +25,7 @@ class fluid:
	reynolds_number()
	gravity()

	- def init_grid(nx = 10, ny = 10, dx = 0.1, dy = 0.1):
	+ def init_grid(self, nx = 10, ny = 10, dx = 0.1, dy = 0.1):
	'''
	Initializes the numerical grid.
	:param nx: Fluid grid width in number of cells
	t@@ -45,7 +45,7 @@ class fluid:
	self.u = numpy.zeros((nx+2, ny+2))
	self.v = numpy.zeros((nx+2, ny+2))

	- def current_time(t = 0.0):
	+ def current_time(self, t = 0.0):
	'''
	Set the current simulation time. Default value = 0.0.
	:param t: The current time value.
	t@@ -53,7 +53,7 @@ class fluid:
	'''
	self.t_end = numpy.asarray(t)

	- def end_time(t_end = 1.0):
	+ def end_time(self, t_end = 1.0):
	'''
	Set the simulation end time.
	:param t_end: The time when to stop the simulation.
	t@@ -61,7 +61,7 @@ class fluid:
	'''
	self.t_end = numpy.asarray(t_end)

	- def safety_factor(tau = 0.5):
	+ def safety_factor(self, tau = 0.5):
	'''
	Define the safety factor for the time step size control. Default value…
	0.5.
	t@@ -70,7 +70,7 @@ class fluid:
	'''
	self.tau = numpy.asarray(tau)

	- def max_iterations(itermax = 5000):
	+ def max_iterations(self, itermax = 5000):
	'''
	Set the maximal allowed iterations per time step. Default value = 5000.
	:param itermax: Max. solution iterations in [1;inf[
	t@@ -78,7 +78,7 @@ class fluid:
	'''
	self.itermax = numpy.asarray(itermax)

	- def tolerance_criteria(epsilon = 1.0e-4):
	+ def tolerance_criteria(self, epsilon = 1.0e-4):
	'''
	Set the tolerance criteria for the fluid solver. Default value = 1.0e-…
	:param epsilon: Criteria value
	t@@ -86,7 +86,7 @@ class fluid:
	'''
	self.epsilon = numpy.asarray(epsilon)

	- def relaxation_parameter(omega = 1.7):
	+ def relaxation_parameter(self, omega = 1.7):
	'''
	Set the relaxation parameter for the successive overrelaxation (SOR)
	solver. The solver is identical to the Gauss-Seidel method when omega =
	t@@ -96,7 +96,7 @@ class fluid:
	'''
	self.omega = numpy.asarray(omega)

	- def upwind_differencing_factor(gamma = 0.9):
	+ def upwind_differencing_factor(self, gamma = 0.9):
	'''
	Set the upwind diffencing factor used in the finite difference
	approximations. Default value = 0.9.
	t@@ -105,7 +105,7 @@ class fluid:
	'''
	self.gamma = numpy.asarray(gamma)

	- def boundary_conditions(left = 1, right = 1, top = 1, bottom = 1):
	+ def boundary_conditions(self, left = 1, right = 1, top = 1, bottom = 1):
	'''
	Set the wall boundary conditions. The values correspond to the followi…
	conditions: 1) free-slip, 2) no-slip, 3) outflow, 4) periodic
	t@@ -117,7 +117,7 @@ class fluid:
	self.w_top = numpy.asarray(top)
	self.w_bottom = numpy.asarray(bottom)

	- def reynolds_number(re = 100):
	+ def reynolds_number(self, re = 100):
	'''
	Define the simulation Reynolds number.
	:param re: Reynolds number in ]0;infty[
	t@@ -125,7 +125,7 @@ class fluid:
	'''
	self.re = numpy.asarray(re)

	- def gravity(gx = 0.0, gy = 0.0):
	+ def gravity(self, gx = 0.0, gy = 0.0):
	'''
	Set the gravitational acceleration on the fluid.
	:param gx: Horizontal gravitational acceleration.
	t@@ -137,7 +137,7 @@ class fluid:
	self.gx = numpy.asarray(gx)
	self.gy = numpy.asarray(gy)

	- def read(path, verbose = True):
	+ def read(self, path, verbose = True):
	'''
	Read data file from disk.
	:param path: Path to data file
	t@@ -193,7 +193,7 @@ class fluid:
	if fh is not None:
	fh.close()

	- def write(verbose = True, folder = './'):
	+ def write(self, verbose = True, folder = './'):
	'''
	Write the simulation parameters to disk so that the fluid flow solver
	can read it.
	t@@ -243,4 +243,3 @@ class fluid:
	finally:
	if fh is not None:
	fh.close()
	-