SAE - J2966
Guidelines for Aerodynamic Assessment of Medium and Heavy Commercial Ground Vehicles Using Computational Fluid Dynamics
|Publication Date:||1 June 2021|
This document outlines general requirements for the use of CFD methods for aerodynamic simulation of medium and heavy commercial ground vehicles weighing more than 10000 pounds. The document provides guidance for aerodynamic simulation with CFD methods to support current vehicle characterization, vehicle development, vehicle concept development, and vehicle component development. The guidelines presented in the document are related to Navier-Stokes and Lattice-Boltzmann based solvers.
This document is only valid for the classes of CFD methods and applications mentioned. Other classes of methods and applications may or may not be appropriate to simulate the aerodynamics of medium and heavy commercial ground vehicle weighing more than 10000 pounds.
The purpose of this document is to standardize the use of Navier-Stokes and Lattice-Boltzmann CFD for aerodynamic simulation for medium and heavy commercial ground vehicles weighing more than 10000 pounds and to guide CFD users to utilize CFD tools effectively and efficiently. The recommendations are grouped under three main sections: (1) CFD model setup, (2) solver setup, and (3) data processing and communication. The model setup section aims to address issues related to model preparation and physical accuracy. It explains what physical properties need to be modeled and how they need to be configured. The solver setup section deals with appropriate solver selection and different options in turbulence modeling, boundary layer representation, and discretization. The last section, data processing and communication, gives guidance about how the CFD results need to be presented and interpreted. The section also contains recommendations on information collection and processing related to CFD simulations.
This document is structured to service both the novice and the expert user.