Affiliation of Author(s):能源与动力学院

Journal:Tuijin Jishu

Abstract:To explore the flow field structure during the dynamic process of single/double bypass model selection in variable cycle engine(VCE), an experimental equipment designed by our group is used to imitate the dynamic process, and a two-dimensional numerical simulation by dynamic mesh is carried out on this experimental equipment. During the dynamic process, the mass flow's and total pressure's variations were found to lag behind the condition of valve's switching at a low speed, and with the switching speed increased, the lag will become larger. However, the regulation of static pressure's variation is contrary. Furthermore, we studied the effects of different initial bypass ratios on the lag during the closing process, and found that the smaller initial bypass ratio, the larger the lag will become, the lag reaches the maximum when the valve is closed to 22° on closing process. © 2017, Editorial Department of Journal of Propulsion Technology. All right reserved.

ISSN No.:1001-4055

Translation or Not:no

Date of Publication:2017-08-01

Co-author:Liu, Jia-Xin,严伟,hj

Correspondence Author:王志强