In:
Journal of Physics D: Applied Physics, IOP Publishing, Vol. 54, No. 22 ( 2021-06-03), p. 225203-
Abstract:
Based on gliding arc discharge, a novel aero-engine combustor head is designed, which can realize three-dimensional rotating gliding arc discharge in turbulent flow field at atmospheric pressure. The spatiotemporally resolved characteristics and discharge modes of gliding arc discharge are studied, including gliding discharge (G-D) mode, breakdown discharge (B-D) mode, multi-cycle B-D (MB-D) mode, short-cutting discharge (SC-D) mode. And the conversion between different discharge modes are discussed by using optical and electrical parameters synchronous observation. In the G-D mode, the discharge voltage and current show sinusoidal variation, and the current amplitude is about several 100 mA. In B-D mode and MB-D mode, the current waveform appears as nanosecond spike, and the peak value can reach several amperes. The interaction between turbulent flow and electric field can lead to SC-D mode, which reduces the arc length suddenly and changes the discharge path of the arc. Air flow and input power will affect the discharge mode of the gliding arc. In the G-D mode, the arc will change to B-D mode as the length increases. When the power supply energy is enough to maintain the arc gliding, the arc in B-D mode will also change to G-D mode. In different discharge modes, the discharge power of the arc will also be affected by the air flow and power supply energy.
Type of Medium:
Online Resource
ISSN:
0022-3727
,
1361-6463
DOI:
10.1088/1361-6463/abea3a
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2021
detail.hit.zdb_id:
209221-9
detail.hit.zdb_id:
1472948-9
