Document: NRC Regulatory Guide
Document ID: f4c5fb1d-efb9-4168-9804-5ad3f6f64d06
Document Type: regulatory_guide
Title: Reporting Procedure for Mathematical Models Selected To Predict Heated Effluent Dispersion in Natural Water Bodies
Source: NRC Regulatory Guide Division 4
Source URL: https://www.nrc.gov/docs/ML0037/ML003739535.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-4.4
CFR Part: 
CFR Title: 

Content:
used here, phenomenological far-field models differ from either deterministic or stochastic models in that they do not derive directly from solution of the basic transport equations, but rather from a combination of theory and correlations of observed plume behavior with known laboratory and field flow conditions. These models are relatively lacking in mathematical elegance and sophistication, and it is difficult to extract basic information from them concerning the relative importance of individual transport processes within the framework of the governing equations. However, an important advantage is that they are relatively easy to use and are based on a compilation of observed phenomena and a minimum number of simplifying assumptions. 4.4-17