Initial Simulations of Turbulent Combustion Models for Canonical Premixed/Non-Premixed Combustors

摘要

In this paper, the recently-updated Open National Combustion Code (OpenNCC), the releasable version of the National Combustion Code (NCC), is applied to model two types of combustors for the purpose of performing a sensitivity analysis for turbulent combustion interaction models. Here, one of the combustors is a methane-air reacting flow in a non-swirling coaxial jet combustor at the United Technologies Research Center (UTRC), and the other is a propane-air flame stabilized behind a triangular-shaped flame holder, the Volvo Validation Rig. The configurations are relatively simple and are related, but relevant to a gas turbine combustor in the sense that, in both cases, the flame is held by the recirculation zone. We consider four different turbulence-combustion interaction models: the Eddy-Breakup model (EBU), the Linear-Eddy model (LEM), the Probability Density Function model (PDF), the Dynamic Thicken Flame model (DTF) model as well as the laminar finite rate model. A detailed comparison with the data is discussed.