Modeling of Elevated Pressure Diffusion Flames with Water Addition

ABSTRACT

This work investigates high pressure methane diffusion flames with water addition using PeleLM simulation. Particularly, this research uses a coflow burner under the pressure conditions of previous experiments with no water addition up to 11.1 bar. This work provides a comprehensive preliminary understanding of how combustion changes when water vapor is introduced into the fuel flow from 0% to 60% mole fraction. It provides a detailed temperature, CO, and CO₂ concentration distribution using the PeleLM adaptive mesh refinement (AMR) code. The results show that the peak temperature in the flame reduces with water addition and increases with pressure increase. The general conclusion is that the pressure influence dominates over the water addition. This computational result helps to understand the scope of change when water is introduced into the high pressure flow and helps the next step of experiment planning.

KEYWORDS:

• High pressure combustion
• water addition
• diffusion flames
• water-laden flames
• peleLM

Acknowledgements

The authors thank Marcus S Day at National Renewable Energy Laboratory (NREL) for providing insights of PeleLM along the process. The authors appreciate Dr. Derek Dunn-Rankin’s suggestions.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Correction Statement

This article has been corrected with minor changes. These changes do not impact the academic content of the article.

Additional information

Funding

 This final research result is in part supported by NASA Physical Science Informatics (PSI) System under cooperative agreement 80NSSC22K0364.