文章基本信息

标题：Numerical simulation of base flow with hot base bleed for two jet models
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作者：Wen-jie Yu ; Yong-gang Yu ; Bin Ni 等
期刊名称：Defence Technology
印刷版ISSN：2214-9147
出版年度：2014
卷号：10
期号：3
页码：1-6
DOI：10.1016/j.dt.2014.06.010
出版社：Elsevier B.V.
摘要：In order to improve the benefits of base bleed in base flow field, the base flow with hot base bleed for two jet models is studied. Two-dimensional axisymmetric Navier–Stokes equations are computed by using a finite volume scheme. The base flow of a cylinder afterbody with base bleed is simulated. The simulation results are validated with the experimental data, and the experimental results are well reproduced. On this basis, the base flow fields with base bleed for a circular jet model and an annulus jet model are investigated by selecting the injection temperature from 830 K to 2200 K. The results show that the base pressure of the annular jet model is higher than that of the circular jet model with the changes of the injection parameter and the injection temperature. For the circular jet model, the hot gases are concentrated in the vicinity of the base. For the annular jet model, the bleed gases flow into the shear layer directly so that the hot gases are concentrated in the shear layer. The latter temperature distribution is better for the increase of base pressure.
关键词：Fluid mechanics ; Base bleed ; Base flow ; Numerical simulation ; Annulus jet