Commercial Vehicles

Improve the design and fuel efficiency of your tractor, trailer or add-on device through CFD.

Having decades of applied Computational Fluid Dynamics (CFD) experience, evaluating the aerodynamic performance of automotive vehicles and trucks, for brands like Honda and NASCAR, and being active members of a professional body that sets industry standards, puts us in a unique position to conduct CFD testing on trucks or aero devices ensuring they meet greenhouse emission (GHG) standards.

Lower your R&D spend on physical prototypes with virtual prototypes, expand your capabilities to assess drag, speed and fuel efficiency without the need to conduct as many expensive physical tests, and enhance efficiencies by automating workflows. No matter your specific goal, TotalSim thrives on solving the most complex aerodynamic challenges.

Tap into one of our many services tailored for the semi-truck industry including:

R&D through wind tunnel testing can be costly and time consuming. CFD can provide an efficient and approved alternative to wind tunnel testing. Through our consulting services, improve your design using CFD.

  • Tractor
  • Trailer
  • Aerodynamic Device


We provide certification testing for the following program:



TotalSim’s work with SAE for the Trucking Industry

Our own Co-founder and Technical Director, Naethan Eagles, has helped shape the procedures the trucking industry has adopted. Naethan serves on three Society of Automotive Engineers (SAE) Committees which focus on everything from fuel economy to road vehicles to automated and connected commercial vehicles.

Society of Automotive Engineers (SAE) Committees

  • Truck and Bus Aerodynamics and Fuel Economy Committee (member since 2011)
  • Road Vehicle Aerodynamics Forum Committee (member since 2015)
  • Automated and Connected Commercial Vehicle Committee (member since 2017)

Taskforce membership (writing and updating standards)

  • J2966 Taskforce member 2012-2013 “Guidelines for Aerodynamic Assessment of Medium and Heavy Commercial Ground Vehicles Using Computational Fluid Dynamics”
  • J3015 Taskforce member 2013-2016 “Reynolds Number Scaling and Simulation Guidelines and Methods”
  • J1252 Taskforce member 2017-2018 “SAE Wind Tunnel Test Procedure for Trucks and Buses”
  • J3147 Taskforce member 2017-2019 “Evaluation Method Types”
  • J3148 Taskforce member 2017-2019 “Operational Efficiency”

Conference Activity

  • COMVEC 2011: Paper and presentation: 2011-01-2283 “Drag Reduction of a Modern Straight Truck” Author M Cragun
  • COMVEC 2013: Paper and presentation: 2013-01-2415 “A Parametric Assessment of Skirt Performance on a Single Bogie Commercial Vehicle” Author N Eagles
  • COMVEC 2014: Member of “Chat with Expert” Panel
  • COMVEC 2016: Aero Plenary “Shedding Light on CFD”

Journal Publications

  • (13CVA-0003 – A Parametric Assessment of Skirt Performance on a Single Bogie Commercial Vehicle) was been approved for publication in conjunction with session CVA200 – Commercial Vehicle Aerodynamics – Design and Evaluation Process