Based on the computing fluid dynamics, the effects of the inhomogeneity of the flow filed at the nozzle entry on the flow characteristic at the gain region were investigated. The computing results indicate that the asymmetric -inhomogeneous conditions can induce the asymmetric influences and the boundary layer separation at the gain region. The symmetric - inhomogeneous conditions with different profiles have different effects. Along the nozzle spanwise direction, the incoming flow with the regular triangle pressure profile can increase the shock wave intensity. The flow structure is broken and the interaction position of boundary layer and shock waves move upstream in the condition with the regular triangle pressure profile. All results can provide information for study and design of the pipe at the COIL nozzle upstream.

Date Published: 12 March 2019
PDF: 7 pages
Proc. SPIE 11023, Fifth Symposium on Novel Optoelectronic Detection Technology and Application, 110233S (12 March 2019); doi: 10.1117/12.2521888

Published in SPIE Proceedings Vol. 11023:
Fifth Symposium on Novel Optoelectronic Detection Technology and Application
Qifeng Yu; Wei Huang; You He, Editor(s)