Turbulent Reynolds number
Hey all,
which viscosity do I use if I am calculating the turbulent Reynolds number : Re_t = SQRT(k)*L_x/nu Is it the laminar one or the effective/turbulent viscosity at that particular point? Thanks. F&S 
Re: Turbulent Reynolds number
laminar one I think

Re: Turbulent Reynolds number
Hi,
The viscosity you should use is the laminar one, since the turbulent Reynolds number stands for, precisely, a ratio between turbulent viscosity [C*rho*Velocity(sqrt(k))*L] and laminar viscosity. Hope this helps. 
Re: Turbulent Reynolds number
Hi,
There exists some different definitions of the turbulent Reynolds number. For turbulence models I've come across the following: Re_T=k**2/(\eps\nu)=k/(\omega\nu) and Re_T=\nu_T/\nu the latter states it quite clearly I believe, Regards Jonas 
All times are GMT 4. The time now is 05:51. 