High-Fidelity Simulations of Supercritical CO2 Based Oxy-Combustion with Non-Ideal Equation of State

Conference · Wed Aug 03 04:00:00 EDT 2022

OSTI ID:1880548

Doronina, Olga; Henry de Frahan, Marc T.; Perry, Bruce; Yellapantula, Shashank

The supercritical carbon dioxide (sCO2) Allam-Fetvedt cycle employs high-temperature oxy-combustion using sCO2 as the working fluid, leading to a unique and challenging environment for materials. In this cycle, pressurized gaseous fuel is combusted in the presence of a hot oxidant flow containing a mixture of CO2 and oxygen and a hot CO2 diluent recycle stream at approximately 300 bar under lean combustion conditions. We present high-fidelity reacting simulations of this oxy-combustor environment and compare the results when performing simulations with ideal and non-ideal equations of state. By doing so, we identify if the combustor behavior at the regime of interest is sensitive enough to the equation of state to justify the added computational cost incurred with a non-ideal equation of state.

• Research Organization: National Renewable Energy Laboratory (NREL), Golden, CO (United States)
• Sponsoring Organization: USDOE High Performance Computing for Materials (HPC4Mtls) Program
• DOE Contract Number: AC36-08GO28308
• OSTI ID: 1880548
• Report Number(s): NREL/PR-2C00-82295; MainId:83068; UUID:c71a1e08-d79d-483b-90b6-1b911b09a2f2; MainAdminID:65030
• Country of Publication: United States
• Language: English

Related Subjects

MATHEMATICS AND COMPUTING
equation of state
numerical simulation
oxy-combustion
supercritical carbon dioxide