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	tfix reynolds number calculation, add Re number to vtk files - sphere - GPU-bas…
	git clone git://src.adamsgaard.dk/sphere
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	---
	commit 6953a6e79d6f9b2c89e136d8283b348f332f8415
	parent 692076d936059904de8c5e1365d11db9197f762e
	Author: Anders Damsgaard <[email protected]>
	Date: Tue, 14 Oct 2014 11:23:55 +0200

	fix reynolds number calculation, add Re number to vtk files

	Diffstat:
	M python/sphere.py \| 19 +++++++++++++++++--

	1 file changed, 17 insertions(+), 2 deletions(-)
	---
	diff --git a/python/sphere.py b/python/sphere.py
	t@@ -1684,6 +1684,16 @@ class sim:
	else:
	dporos.SetNumberOfTuples(grid.GetNumberOfPoints())

	+ # array of scalars: Reynold's number
	+ self.ReynoldsNumber()
	+ Re = vtk.vtkDoubleArray()
	+ Re.SetName("Reynolds number")
	+ Re.SetNumberOfComponents(1)
	+ if cell_centered:
	+ Re.SetNumberOfTuples(grid.GetNumberOfCells())
	+ else:
	+ Re.SetNumberOfTuples(grid.GetNumberOfPoints())
	+
	# insert values
	for z in range(self.num[2]):
	for y in range(self.num[1]):
	t@@ -1693,6 +1703,7 @@ class sim:
	vel.SetTuple(idx, self.v_f[x,y,z,:])
	poros.SetValue(idx, self.phi[x,y,z])
	dporos.SetValue(idx, self.dphi[x,y,z])
	+ Re.SetValue(idx, self.Re[x,y,z])

	# add pres array to grid
	if cell_centered:
	t@@ -1700,11 +1711,13 @@ class sim:
	grid.GetCellData().AddArray(vel)
	grid.GetCellData().AddArray(poros)
	grid.GetCellData().AddArray(dporos)
	+ grid.GetCellData().AddArray(Re)
	else:
	grid.GetPointData().AddArray(pres)
	grid.GetPointData().AddArray(vel)
	grid.GetPointData().AddArray(poros)
	grid.GetPointData().AddArray(dporos)
	+ grid.GetPointData().AddArray(Re)

	# write VTK XML image data file
	writer = vtk.vtkXMLImageDataWriter()
	t@@ -4504,7 +4517,8 @@ class sim:

	def ReynoldsNumber(self):
	'''
	- Estimate the per-cell Reynolds number by: Re = rho * \|\|v_f\|\| * dx/mu
	+ Estimate the per-cell Reynolds number by: Re = rho * \|\|v_f\|\| * dx/mu.
	+ This value is returned and also stored in `self.Re`.

	:returns: Reynolds number
	:return type: Numpy array with dimensions like the fluid grid
	t@@ -4515,7 +4529,8 @@ class sim:
	for z in numpy.arange(self.num[2]):
	for y in numpy.arange(self.num[1]):
	for x in numpy.arange(self.num[0]):
	- self.v_f_magn = self.v_f[x,y,z,:].dot(self.v_f[x,y,z,:])
	+ self.v_f_magn[x,y,z] = \
	+ self.v_f[x,y,z,:].dot(self.v_f[x,y,z,:])

	self.Re = self.rho_fself.v_f_magnself.L[0]/self.num[0]/self.mu
	return self.Re