SAE J2966 (JUL2026)

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Guidelines for Aerodynamic Assessment of Medium and Heavy Commercial Ground Vehicles Using Computational Fluid Dynamics

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SAE J2966 (JUL2026)

Guidelines for Aerodynamic Assessment of Medium and Heavy Commercial Ground Vehicles Using Computational Fluid Dynamics

PUBLISH DATE 2026
SAE J2966 (JUL2026)

This document outlines **general requirements** for the use of **CFD methods** for aerodynamic simulation of medium and heavy commercial ground vehicles weighing more than 10,000 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 vehicles weighing more than 10,000 pounds.

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