Material of the flow in the turbulent channel tutorial


At the moment I’m trying to understand the turbulent 2d channel tutorial and I have a question concerning the material of the flow. I tried to compute the kinematic viscosity of the flow using formula nu = u_tau * H / Re with u_tau = 0.925, H = 1 and Re = 590. I got the value nu =1.568 * 10^(-3) which is too high if we measure the viscosity in m^2/sec. Usually liquids and gases have viscosity at about 10^(-7) or 10^(-6) m^2/sec. Can this happen due to non-dimentionalization? If that so then how to compute it correctly and what is the material of the flow?

Thanks in advance!