A Numerical Weather Correction Model to Normalize Outdoor Vehicle Testing

Client

U.S. Department of Energy

Project Objectives

  • Develop a numerical weather corrector to normalize outdoor vehicle testing during various seasons and weather conditions
  • The weather corrector can then be used to normalize all outdoor vehicle tests to a standard day. This allows for a more accurate comparison of outdoor vehicle tests.

Summary of Project and Results (Non-Confidential)

  • A 2-node model of the vehicle-ambient environment interaction was developed in Matlab.  One node was used for the cabin mass, and another for the cabin air.
  • The heat transfer to each cabin mass component was calculated and averaged to convolute spatial components into one node
  • Solar radiation absorption, vehicle emission, outer vehicle convection, and inner cabin convection mechanisms were modeled
  • The numerical weather corrector was found to accurately predict outdoor testing results in a variety of weather conditions and solar loads.


Typical Cabin Air and Cabin Mass Simulation Results