RNG k-epsilon model and wall function

greg

I have used the RNG k-epsilon model of Yakhot & Orszag (1986 ... 1992). I have read that : "The RNG model with low-Re modifications is valid across the full range of flow conditions from low to high Re, so WALL FUNCTIONS ARE NO LONGER REQUIRED"

Is this true ?

Could somebody tell me more about these "low-Re modifications" (equations, news terms ...)?

Thanks you,

Greg.