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SciApt group and Cummins improve combustion simulations

Cummins has considerably improved its designs and understanding of fluid bahaviors.

IU’s Science Applications and Performance Tuning (SciAPT), a group within Research Technologies and the Pervasive Technology Institute, assisted project leads John Deur and Siddhartha Banerjee from Cummins, Inc. (Columbus, IN) by using graphic processing units (GPUs) to calculate reaction rates. Without this GPU-based approach, solving the combustion chemistry of complex fuels inside a combustion chamber is impractical. With the GPUs, it is now possible to improve the ignition predictions of new fuels and understand the formation of soot pre-cursors.

As a result of this work, Cummins has considerably improved its designs and understanding of fluid behaviors.

This work was made possible by an earlier partnership of Lawrence Livermore National Laboratory, Indiana University, and Cummins to adapt engine simulation software from Convergent Science (the top maker of engine simulation software) to GPUs.

Captions:  RANS (traditional computational fluid dynamics) vs. LES (HPC-based method), Spray modeling and primary atomication of liquid jet (HPC-based modeling), Spray modeling and primary atomications of liquid jet (traditional approach).