A theoretical model for description of structure formation processes in fluids by Naue [1] is applicated for film flow. The optimum of such processes can be defined from maximum of information entropy. A turbulent additive velocity for optimal momentum disproportionation is presented in dependence of mean flow rate. This additiv velocity is used for definition of multi-dimensional extension from turbulent motion structures. A formation of (general) reynolds-number for film flow can be determined with application of these turbulence characteristics. The special cases of plane film flow and tube flow are able derivated. The characteristic of stability boundaries for extension from n-dimensional structure elements is conneted with definition from critical film reynolds-number. A comparison from these theoretical characteristics with experimental experiences of other authors demonstrates a very good agreement. The alteration of onedimensional extension from structural elements in reference to critical quantities is used for calculation from turbulent film thickness. A theoretical relation predicts a model from Brauer [2] with excelent identity.