# Eddy viscosity

(Difference between revisions)
 Revision as of 18:20, 6 May 2006 (view source)Jola (Talk | contribs) (Another start... needs much more also)← Older edit Latest revision as of 18:22, 6 May 2006 (view source)Jola (Talk | contribs) Line 1: Line 1: - The transfer of momentum caused by turbulent eddies is often modeled with an effective eddy viscosity in a similar way as the momentum transfer caused by molecular diffusion (i.e. friction) is modeled with a molecular viscosity. The hyptheses that the effect of turbulent eddies on the flow can be modeled in this was is called [[Boussinesq eddy viscosity assumption]] and was first formulated by Boussinesq in 1877. + The transfer of momentum caused by turbulent eddies is often modeled with an effective eddy viscosity in a similar way as the momentum transfer caused by molecular diffusion (i.e. friction) is modeled with a molecular viscosity. The hyptheses that the effect of turbulent eddies on the flow can be modeled in this was is often refered to as the [[Boussinesq eddy viscosity assumption]] and it was first formulated by Boussinesq in 1877. + + The eddy viscosity is also commonly called the turbulent viscosity and it is normally written as $\mu_t$. {{stub}} {{stub}}
The eddy viscosity is also commonly called the turbulent viscosity and it is normally written as $\mu_t$.