Flame stabilisation by a highly conductive body: multiple steady-state solutions and time-dependent dynamics

Abstract

We present an investigation of the stabilisation of premixed laminar flames by means of an isolated highly conductive bluff-body, a circular cylinder, placed in a uniform flow of a combustible mixture. It is shown that the problem has non-unique steady-state solutions for certain values of the parameters. Moreover, we solve the time-dependent equations to check the stability of the solutions and demonstrate the possibility of controlling the convergence to a certain steady-state solution.

Keywords:

• premixed flame stabilisation
• bluff-body
• flame dynamics
• multiple steady-state solutions
• heat recirculation

Disclosure statement

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

Additional information

Funding

This work was financed by project #PID2019-108592RB-C42/AEI/10.13039/501100011033.