Dynamics of Flame Stabilized by a Rotating Cylinder – Effect of Rotational Speed

Abstract

This paper presents numerical simulation of a cylinder stabilized flame. The effect of rotational speed on flame structure and stabilization is investigated. A nearstoichiometric mixture of methane (φ = 0.9) is used. The flame stabilizes in the recirculation zone behind the cylinder for the no rotation case. Mean flame properties are symmetric in transverse direction. However, with cylinder rotation, the flame anchoring location moves along the direction of cylinder rotation and the flame becomes asymmetric. For higher rotational speeds, the flame gets wrapped around the cylinder and even gets stabilized in the wind-ward side of the cylinder. This behavior is investigated by analyzing various flow and flame parameters, and comments are made on the conditions which govern flame stability. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.