WLTP (Worldwide harmonized Light vehicles Test Procedure) was officially applied to new types of cars from September 2017. Since then, ICON has been working with automotive manufacturers on WLTP certification using iconCFD on CFD external aerodynamics simulation. 

WLTP is a United Nations Global Technical Regulation (UN GTR) where standard methods are set to define:

  • car CO2 emissions
  • fuel consumptions
  • electric energy consumption
  • range of light duty vehicles

in a repeatable and reproducible manner.  A large amount of wind tunnel testing is required for such a certification process, and nowadays the CFD role is getting more important as it can accurately predict vehicle drag coefficient and help off-loading the need for experimental testing.

For more facts about WLTP please visit the European website https://wltpfacts.eu/

Today ICON provides consultancy services to support car manufacturers in the WLTP. For more information please Contact us.

Example of Car Group Families and Contours of velocity magnitude
using unsteady DES simulations (Extract from SAE Paper 2017-01-1524)

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