Reduced Order Model

Simulations can be challenging and time-consuming; changing any aspects of the design can greatly increase these challenges. By creating a reduced-order model (ROM), changes can be made and analyzed in real-time simulations, decreasing simulation time by orders of magnitude.

ROMs have several features that can help engineers and designers in many ways, including:

  • Ease of use for non-traditional users
  • Ability to run real-time simulations
  • Model storage size reduction
  • Efficient modeling of large system simulations

Below is a post-processing simulation comparison of CFD and ROM results on a 16-cell battery pack. The CFD thermal simulation took 6 CPUs and a 5-hour run time, while the ROM took 1 CPU and a 30-minute run time.

CFD

5 hour CFD simulation of a 16 cell battery pack
(courtesy of General Motors)

ROM

30 minute ROM simulation of a 16 cell battery pack
(courtesy of General Motors)

CFD vs ROM

CFD vs ROM average cell temperature over time comparison
(courtesy of General Motors)

Read How to Build Reduced Order Models of Computational Fluid Dynamics Simulations