2021 Nashville AISTech

Numerical Investigation of DC Electric Arc Behavior Under the Consideration of Electrode Movement (Room 204)

30 Jun 21
3:00 PM - 3:30 PM

Tracks: Electric Steelmaking: EAF Performance II

Speaker(s): Yuchao Chen , Ph.D. Student, Purdue University Northwest; Armin Silaen, Purdue University Northwest; Yu Wang, Purdue University Northwest; Chenn Zhou, Purdue University Northwest

The DC free-burning electric arc configuration was studied in the present work. The simulation results are in good agreement with former experimental data. Investigation of the electric arc behavior was conducted through corresponding flow variables including temperature field, velocity field, etc. The electrode movement was further considered in the model to evaluate the impact of the moving electrode on the arc performance. The simulation reveals that shortening the arc length will have the arc plasma gradually lose its bell shape. The ambient temperature may increase significantly due to the arc column compression, which may result in the electrode wall overheating.