outflow = true
obstacle = true
usePeriodic = false
height =  0.41
nHeight = 50
l_h = 5
nLength = nHeight*l_h 
dx = height/nHeight
length = nLength*dx
--length = 2.2
nLength_bnd = 2*nLength+4
level = math.ceil(math.log(nLength_bnd)/math.log(2))
length_bnd = (2^level)*dx
dx_half = dx*0.5
zpos = dx_half


