Simulating the optical properties of soot using a stochastic soot model

Conference · Mon Apr 13 04:00:00 EDT 2020

OSTI ID:1808050

Strickland, Tyler ^[1]; Kokjohn, Sage

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1. University of Wisconsin - Madison

KL extinction measurements are common in literature concerning soot producing sprays because of their nonintrusiveness. Unfortunately, these measurements often rely on bold assumptions of uniform and monodisperse spherical particles. In this work, a Spray A case is simulated using a highly detailed 3D stochastic soot model and the measured and simulated soot volume fraction are compared. Although the simulated volume fraction magnitude is approximately correct, features are much sharper than in the measured data. Optical models based on particle shape are applied to the simulated soot particles to nd the local optical thickness. The modeled optical thickness aligns with the measured volume fraction much more closely than the simulated volume fraction indicating KL extinction measurements are not simply related to soot volume fraction.

• Research Organization: University of Wisconsin - Madison
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office
• DOE Contract Number: EE0007300
• OSTI ID: 1808050
• Report Number(s): IMEM-2020
• Country of Publication: United States
• Language: English