Simulations of partially premixed turbulent ethanol spray flames using doubly conditional source term estimation (DCSE)
Tuesday, October 25, 2022
Singly Conditional Source-term Estimation (CSE) is extended to Doubly Conditional Source-term Estimation (DCSE) to simulate three turbulent ethanol spray flames (EtF1, EtF3 and EtF4) for the first time. Reynolds-Averaged Navier Stokes equations are solved with a two-way coupling Eulerian-Lagrangian method to account for the gas-spray interactions. The objective of this work is to compare the performance of CSE and DCSE in simulating flames with varying levels of pre-evaporation leading to different levels of premixing and combustion modes. Tabulated detailed chemistry is included. The gas phase temperature and spray velocity predictions are compared with experimental data and previously published studies. Both CSE and DCSE can capture the temperature trends adequately.
