Possible Redundancy in Comments of the Tutorial: channel395DFSEM
0/U has the following comment for
// Re = 395, L = pi, utau = 1, nu = pi/395 = 7.9534e-3
constant/transportProperties another comment for
// Re_tau = u_tau L / nu // Re_tau = 395 // L = half channel height = 1 // Ubulk/u_tau = 17.55 // U_bulk = 17.55 -> u_tau = 1 // -> nu = 1*1/395 = 2.532e-3
AFAIK, the second comment reflects the generally accepted value of the half channel height for this particular plane channel flow although its value can be anything. Considering the computation uses the value of
nu = 2.532e-3, I believe that discarding the first comment may be useful.